Answer:
lungs
Explanation:
propse ideas for the development of drugs that could stop viral replication cycles.
The best way to reduce viral reproduction is to develop drugs that can stop viruses from adhering to host cells. The creation of drugs that could prevent viral replication cycles is suggested.
Which drugs are you referring to?Drugs have the potential to change a person's mental or physical state. It is possible to affect your views, knowledge, behavior, and how your brain works. Because of this, individuals, especially young people, become unpredictable and dangerous.
What exactly qualifies it as a drug?Etymology. The word "drug" is believed to have originated from the Middle Dutch word "droge (vate)," which meant "dry (barrels)," in reference to medicinal herbs that were preserved as dry materials in barrels. The Old French word "drogue" is also thought to have originated from this Middle Dutch word.
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benign saclike swelling or cyst that typically develops over a joint or tendon
What is a cyst on a tendon called?
Lumps known as ganglion cysts typically develop along the tendons or joints of the wrists or hands. They can also develop in the feet and ankles. Usually circular or oval in shape, ganglion cysts have a jelly-like fluid inside.
When fluid seeps from a joint or tendon tunnel and causes a bulge under the skin, a ganglion cyst is created. Generally speaking, the reason of the leak is unknown, however it could be related to a trauma or underlying arthritis. Epidermoid cysts and sebaceous cysts are two different forms of cysts that frequently develop beneath the skin. Both typically present as smooth-surfaced oval with flesh-colored or whitish-yellow surfaces. Surface skin cells that migrate deeper into the skin and replicate there give rise to epidermoid cysts.
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In what way do these trees suggest that some of the species of blood flukes have switched hosts?
These two creatures were an outgroup in the host and fluke parasite phylogenetic trees.
On the evolutionary tree, their individual parasitic flukes are closely connected. Because the host tree does not exhibit the same pattern as the parasite tree, these two fluke species must have switched hosts. Avoiding contact with fresh water contaminated with Schistosome parasites is the main way to avoid contracting the disease.
Swimming, wading, or engaging in any other aquatic activity in these bodies of water exposes the skin to potential cercariae penetration. Time flows via a tree's root system rather than through its branches.
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The two species are human fluke and freshwater turtle fluke. The host tree's pattern is different from the parasite tree's, indicating that these two fluke species have changed hosts.
A group of parasitic trematodes belonging to the phylum Platyhelminthes are referred to as liver flukes together. The liver of several mammals, including humans, is where they primarily reside as parasites. They can develop in bile ducts, gallbladders, and liver parenchyma and are capable of migrating with the blood circulation. Blood parasites, or trematodes, of the Spirorchiidae family, which primarily affect turtles, are found everywhere. These flukes have recently been identified in a few marine turtles from South America, where it is still uncertain whether spirorchiids can be found in freshwater definitive and intermediate hosts.
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what kind of evidence has recently made it necessary to assign the prokaryotes to either of two different domains, rather than assigning all prokaryotes to the same kingdom? group of answer choices
Recently, it has become important to classify prokaryotes into one of two distinct domains rather of placing them all in the same kingdom due to rRNA genes.
Prokaryotes are split into two domains since research on the organisms found that there are sufficient distinctions between them to classify them into separate groups. Bacteria come in a wide variety, from pathogens that cause disease to helpful photosynthesizers and symbionts. It can be difficult to classify prokaryotes according to their species. They cannot be categorized based on whether they interbreed or not because they do not sexually reproduce. Additionally, they have little morphological characteristics. The current strategy is to research gene DNA sequences. Fruit that has been home-preserved has a higher risk of causing food illness.
( what kind of evidence has recently made it necessary to assign the prokaryotes to either of two different domains, rather than assigning all prokaryotes to the same kingdom? A. ecological, B. rRNA genes, C. mtDNA, D. morphological )
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Overshadows the other allele in the heterozygous state.
answer choices
dominant
recessive
The dominant allele overshadows the other allele in the heterozygous state.
A homozygous dominant genotype is an organism with two dominant alleles for a trait. This genotype is written as BB, taking the example of eye color. A heterozygous genotype is an organism with one dominant and one recessive allele. This genotype is written Bb in our example. A recessive allele is the kind of allele that is frequently hidden or overshadowed by the dominant allele. If a person has the recessive allele, that trait will only show up if they are homozygous for it.
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why is only a single rna primer needed to synthesize the leading strands, but multiple primers are needed to synthesize the lagging strands?
Only a single RNA primer is needed to synthesize the leading strand because DNA polymerase can synthesize the complementary strand in the 5' to 3' direction, allowing it to work continuously along the template strand. Multiple primers are needed to synthesize the lagging strand because DNA polymerase cannot synthesize in the 3' to 5' direction, so it must start at multiple points and work its way back.
RNA primers are short strands of RNA that are used to initiate DNA synthesis in a process known as DNA replication. During DNA replication, the double-stranded DNA molecule is separated into two single strands that are then used as templates for the synthesis of new strands. The new strands are created by the addition of complementary bases to each template strand.
In order to begin this process, a single RNA primer is needed to synthesize the leading strand, which is the strand that is replicated continuously in the 5' to 3' direction. This is because the leading strand can be replicated in a single direction without the need for further primers.
In contrast, multiple primers are needed to synthesize the lagging strand, which is the strand that is replicated in the 3' to 5' direction. This is because the lagging strand is replicated in a series of short pieces in a process known as Okazaki fragments. Each fragment is initiated by an RNA primer, which is then extended by DNA polymerase and eventually sealed by DNA ligase. Since the lagging strand is replicated in the opposite direction of the leading strand, it requires multiple primers to initiate synthesis of each Okazaki fragment.
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During DNA replication, the leading strand is generally defined as the strand that runs in 5' to 3' direction. The lagging strand is defined as the strand that runs in 3' to 5' direction.
DNA replication is semi-conservative in nature. During replication, the leading strand is synthesized in a continously manner and the lagging strand is synthesized in a fragmented manner. DNA is generally has an orientation based on the carbon atoms in the sugar molecule. Therefore the lagging strand which is formed in a discontinuation manner is called the Okazaki fragments.
Therefore a single RNA primer is required for the DNA polymerase that reads the parent strand and attaches the complementary nucleotides based on Chargaff's rules - that adenine pairs with guanine and cytosine pairs with thymine. And therefore for the lagging strand multiple RNA primer will be required to create small fragments. Then This fragments will be joined by DNA ligase.
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Fill in the blank with the appropriate anatomical term:The popliteal region is _____ to the patellar region.
The popliteal region is posterior to the patellar region.
A diamond-shaped area located behind the knee joint is known as the popliteal fossa. It is created by the muscles in the leg's and thigh's back compartments. The main pathway for structures to travel between the thigh and leg is marked by this anatomical landmark.
An area with a diamond shape just behind the knee joint is called the popliteal fossa. It enables vital neurovascular structures to flow through. The popliteal artery, popliteal vein, tibial nerve, and common peroneal nerve are these structures, arranged from medial to lateral.
At the rear of the knee joint, there is a small depression called the popliteal fossa. Femur and tibia are the bone of the popliteal fossa. The patella, which is situated anterior to the knee, is the biggest sesamoid bone in the human body.
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In relation to the patellar region, the popliteal region is posterior.
The popliteal fossa is a region behind the knee joint that has a diamond-shaped form. It is produced by the muscles in the rear compartments of the leg and thigh. This anatomical landmark indicates the primary route for structures to pass between the thigh and the leg.
The popliteal fossa is a diamond-shaped region located right behind the knee joint. It allows for the free passage of essential neurovascular structures. These structures are positioned from medial to lateral and include the popliteal artery, vein, tibial nerve, and common peroneal nerve. The popliteal fossa is a tiny depression located behind the knee joint. The popliteal fossa's bones are the femur and tibia.
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which technique first produced unequivocal support for the neuron doctrine of the nervous system (as opposed to the reticular theory)?
The neuron doctrine of the nervous system, which states that the nervous system consists of individual cells, or neurons, was first unequivocally supported by the Golgi stain technique developed by Camillo Golgi in 1873.
This technique allowed for the visualization of individual neurons within a tissue sample, thus providing direct evidence for the neuron doctrine.
The Golgi stain technique involved treating a tissue sample with a silver chromate solution, which resulted in the staining of randomly selected neurons.
This allowed for the visualization of the individual neurons within the tissue, as well as their dendrites, axons, and other features.
The distinctness of the stained neurons provided evidence of the neuron doctrine, as opposed to the reticular theory which proposed that the nervous system was a continuous web-like structure.
This technique is still used today to gain insight into the structure and function of the nervous system.
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which cellular adaptation occurs when the liver regenerates after surgical removal of a damaged portion.
The term "gangrene" describes the necrosis that can happen when cells lose oxygen and die, which can ultimately lead to bacterial invasion. The liver regenerates itself after a damaged section has been surgically removed, exhibiting this form of cellular adaptability.
The hepatocytes' compensatory hypertrophy (enlargement) and subsequent hyperplasia are the two main processes that cause the liver to regenerate after tissue loss (partial hepatectomy) (proliferation of hepatocytes). Cellular adaptation is the capacity of cells to react to diverse stimuli and unfavorable environmental changes.
The expansion of individual cells, or hypertrophy, and hyperplasia are some examples of these adaptations. The term "hypertrophy" refers to the enlargement of a tissue or organ caused by a reduction in the number of cells but an increase in the size of the cells. Increased functional demand frequently leads to hypertrophy.
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Correct Question:
What type of cellular adaptation occurs when the liver regenerates after surgical removal of a damaged portion.
The cellular adaptation that occurs when liver regenerates after surgical removal of a damaged portion is called: hyperplasia.
Liver is known to be the largest organ in the human body. It is a part of the digestive system that secretes the digestive juices like bile for the digestion of food. Apart from being a digestive organ, liver is also an endocrine gland that secretes hormones like insulin and glucagon.
Hyperplasia is also known by another name called hypergenesis. It is simply the enlargement of any organ due to rapid cell proliferation in that area. Although it includes the rapid proliferation of cells, hyperplasia is not equivalent to cancer.
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answer ill give u a crown
Sickle-cell anemia is an interesting genetic disease. Normal homozygous individuals (SS) have normal blood cells that are easily infected with the malarial parasite. Thus, many of these individuals become very ill from the parasite and many die. Individuals homozygous for the sickle-cell trait (ss) have red blood cells that readily collapse when deoxygenated. Although malaria cannot grow in these red blood cells, individuals often die because of the genetic defect. However, individuals with the heterozygous condition (Ss) have some sickling of red blood cells, but generally not enough to cause mortality. In addition, malaria cannot survive well within these "partially defective" red blood cells. Thus, heterozygotes tend to survive better than either of the homozygous conditions. If 9% of an African population is born with a severe form of sickle-cell anemia (ss),
what percentage of the population will be more resistant to malaria because they are heterozygous (Ss) for the sickle-cell gene?
The percentage of individuals in the population that are heterozygous (Ss) for the sickle-cell gene will be 18%.
What is population?Population is the total number of people, animals, or other living creatures in a certain area. It is typically measured by counting the number of individuals living within a given territory, and can be used to analyze population growth and density. Population estimates are often used to inform policy and decision making, such as targeted investment in public services, and the use of population data can help to understand economic, social, and health issues.
This is because for each individual with the homozygous recessive genotype (ss), there is another individual with the heterozygous genotype (Ss). Thus, for every 9% of the population with the homozygous recessive genotype (ss), there is an additional 9% with the heterozygous genotype (Ss), making the total percentage of individuals with the heterozygous genotype 18%. This means that 18% of the population will be more resistant to malaria due to their heterozygous condition.
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a member of one species (the predator) feeds directly on all or part of a living organism of another plant or animal species (the prey) as part of a food web.
predation is called as a member of one species (the predator) feeds directly on all or part of a living organism of another plant or animal species (the prey) as part of a food web.
Based on the behaviour of a predator that captures and kills a prey before consuming it, predatory behaviour refers to the ecological process by which energy is transferred from living animal to live animal. Predators are found at the top of food chains. Their typical low density, widely spread distribution, and typically low overall biomass are all explained by their top position. This is sometimes essential for the survival of regional predator populations in terms of conservation. Predators need to adapt structurally, functionally, and behaviorally in order to engage in effective predation. The type of adaptation required will depend on the predator's size, general body composition, chosen predation strategy, general environmental conditions, and available prey's defensive tactics. Predators need to adapt structurally, functionally, and behaviorally in order to engage in effective predation. The type of adaptation required will depend on the predator's size, general body composition, chosen predation strategy, general environmental conditions, and available prey's defensive tactics. The behaviour and effectiveness of the predator are influenced by the structural complexity of the environment at the landscape, habitat, and microhabitat scales as well as by its seasonality.
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When a member of one species (the predator) consumes all or a portion of a living entity belonging to another plant or animal species (the prey) as a component of a food web, this is referred to as predation.
Predatory behavior describes the ecological process by which energy is moved from living animal to living animal and is based on the behavior of a predator that captures and kills a prey before consuming it. At the pinnacle of food chains are predators.
Their top position explains their characteristic low density, widely dispersed distribution, and low total biomass. In terms of conservation, this is occasionally crucial for the survival of local predator populations. For predation to be successful, predators must adjust their behavior and functional needs.
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Correct Question:
_____ is a member of one species (the predator) feeds directly on all or part of a living organism of another plant or animal species (the prey) as part of a food web.
which respresents the common conditions of all three of the following: genetic drift, the founder principle, and the bottleneck effect?
The sentence represents the common conditions of all three of the following is (b), occurs in small populations and results in a decrease in genetic diversity and/or an increase in the occurrence of specific genetic traits.
The founder principle is a principle where a new population is established with a small population that is different from its parent population because the founder of the new population is from a different place.
Genetic drift is a random process that can cause huge population changes in a short period of time. Random drift is produced by repeating tiny population numbers, catastrophic population decreases known as "bottlenecks," and founder events in which a new population begins with a small number of individuals.
Thus, the correct option is b.
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Full Question;
Which respresents the common conditions of all three of the following: genetic drift, the founder principle, and the bottleneck effect?
a.
occurs in small populations when one genetic trait becomes more common in a population purely by chance
b.
occurs in small populations and results in a decrease in genetic diversity and/or an increase in the occurrence of specific genetic traits
c.
when a small group of organisms only reproduce with each other to create a larger population of organisms
d.
when the majority of a population is killed off and there are only a few remaining organisms left to rebuild the population
The point that represents the common conditions among genetic drift, the founder principle, and the bottleneck effect is: (b) in small populations and result in a decrease in genetic diversity or an increment in a specific genetic trait.
Genetic drift is defined as the change in the frequency of genes in the population by random chance. Genetic drift usually results in the reduction of gene frequency. Genetic drift is the cause for founder principle and bottleneck effect to occur.
Genetic diversity refers to the variety of genes present in a specific area. More is the amount of different genes in that region, more is its genetic diversity.
The given question is incomplete, the complete question is:
Which represents the common conditions of all three of the following: genetic drift, the founder principle, and the bottleneck effect?
a. in small populations when one genetic trait becomes more common in a population purely by chance
b. in small populations and result in a decrease in genetic diversity and/or an increase in the occurrence of specific genetic traits
c. when a small group of organisms only reproduce with each other to create a larger population of organisms
d. when the majority of a population is decimated and there are only a few remaining organisms left to rebuild the population
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although cellulose and starch are identical in terms of stored chemical energy, our ability to harvest the energy from these two polysaccharides differs considerably. what is responsible for this difference?
Starch and cellulose are identical polymers with the same repeat units that depend on glucose and are made of the same building blocks.
There is only one difference. In starch, the glucose-repeat units are all parallel to one another. Since the sugar units in cellulose and starch are linked differently—by - linkages in cellulose and - connections in starch—their linkage is the primary distinction between the two substances. The main distinction between cellulose and starch is this. In contrast to cellulose, where each succeeding glucose unit is spun 180 degrees, starch repeat units are situated in the same direction. Compared to sugar, which is not water soluble, cellulose is thicker. Similar to starch, cellulose is a linear of glucose, but in cellulose, the glucose monomer are joined by additional chemical bonds. Because of this, cellulose is more stronger than starch and is not soluble in water.
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Starch and cellulose are similar polymers that depend on glucose and have the same fundamental building blocks as each other.
There is just one distinction. The units of glucose repetition in starch are parallel to one another. The main difference between cellulose and starch is how the sugar units are linked, which differs between the two substances. Cellulose links the sugar units together, while starch links the units together.
This is the primary difference between cellulose and starch. Each consecutive glucose unit in cellulose is spun 180 degrees, yet starch repeat units are all oriented in the same direction. Cellulose is thicker than sugar, which is not water soluble. Similar to starch, cellulose is a linear form of glucose, however unlike starch, cellulose contains connected glucose monomers.
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While hyaline cartilage is excellent at resisting compressive stresses,_____ functions designed to absorb compressive shock.
A. Fibrocartilage
B. Elastic cartilage
C. Compact bone
D. Dense irregular connective tissue
elastic cartilage has the function which was designed to absorb compressive shock.
what is elastic cartilage ?
Elastic cartilage is histologically similar to hyaline cartilage, but it contains a dense matrix of yellow elastic fibres. Under a microscope, these fibres form dark bundles. The elastic fibres require specific staining since they seem the same as hyaline cartilage when stained with haematoxylin and eosin (H&E). Verhoeff van Geison stains are used (which give the elastic fibres a black colour), but other stains such as aldehyde fuchsin stains, Weigert's elastic stains, and orcein stains can also be used. These fibres give elastic cartilage its flexibility, allowing it to endure repeated bending. One or more chondrocytes, similar to hyaline, are found between the gaps (or lacunea) in the fibres. Chondrocytes account for only 2% of the tissue's volume.
elastic cartilage has the function which was designed to absorb compressive shock.
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homologous chromosomes usually have the same arrangement of genes along their length.T/F
True. Homologous chromosomes are chromosomes that have the same length, centromere position and gene content. Homologous chromosomes are paired in somatic cells during mitosis, and have the same arrangement of genes along their length.
During meiosis, homologous chromosomes are separated and recombine with the homologous chromosome of the other parent to form new chromosome combinations, which are then passed on to offspring. Homologous chromosomes may also be referred to as homologs.
Homologous chromosomes contain the same genes, but the alleles of those genes may be different. Homologous chromosomes are important for ensuring the accurate inheritance of genetic information from parent to offspring.
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True. Chromosomes that are homologous share the same length, centromere location, and gene makeup. During mitosis, homologous chromosomes are paired in somatic cells and contain the same gene organization over their entire length.
Homologous chromosomes are divided during meiosis, recombined with the homologous chromosome of the other parent, and then created new chromosomal combinations that are passed on to progeny. Chromosomes that are homologous might also be called homologs. The genes on identical chromosomes are the same, but their alleles could be different. For appropriate genetic information to be accurately passed from parent to child, homologous chromosomes are crucial. Genes are often arranged in the same pattern along the length of homologous chromosomes. All living things have either an X or Y chromosome, which is completely responsible for defining a person's sexual orientation.
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a student needs to pipette 50 microliters of the enzyme collagenase, which breaks down the collagen in tissues. however she cannot find her p200. what could she do?
A student can use P20 twice for a total of 20 microliters and then pipette 10 more microliters. Therefore, statement e is the correct procedure.
A pipette is one of the important tools used in the laboratory to transfer very small quantities of a liquid or water in milliliters or microliters. This pipette is available in three sizes such as P20, P200, and P1000. The volume of 0.5 to 20 µl of liquids is transferred using P20, 20 to 200 µl using P200, and 200-1000 µl using P1000.
In the given situation, the student has to take only 50 µl of enzyme collagenase. So, the student can set 50 µl in a P200 pipette. But this pipette is not available. So, the student can take P20. First, she/he can set 20 µl in the pipette and then take a volume of enzyme twice and then she/he can set 10 µl in the pipette and take 10 µl of the enzyme.
The complete question is -
A student needs to pipette 50 microliters of the enzyme collagenase which breaks down the collagen in tissues. However, she cannot find her P200. What could she do?
a. Use the Balance and weigh 50 grams of the enzyme.
b. Use the P1000 and turn the dial to 500
c. Use the P20 and aliquot 20 microliters since that is its maximum volume
d. Use as much enzyme that is available, the more enzyme the faster the reaction will proceed
e. Use the P20 twice at 20 microliters and then pipette another 10 microliters
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According to the theory of blending Inheritance, offspring were expected to be phenotypically __________________ relative to their parents, which would dilute any new genetic variants.
According to the theory of blending Inheritance, offspring were expected to be phenotypically intermediate relative to their parents, which would dilute any new genetic variants.
The 19th-century biological hypothesis of blending inheritance is now out of date. According to the notion, a kid will receive a trait as an average of its values from both of its parents. According to the blended inheritance theory, phenotypes, or physical characteristics, are intermediates between the parents and their descendants.
This theory, for instance, predicts that if a tall man and a short woman have a kid, the child will be intermediate in height to her parents. By 1905, the distinction between blended and alternate inheritance was well known, but Francis Galton and his interpreters saw the two kinds as distinct results of breeding, not as competing hypotheses.
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Offspring were anticipated to be phenotypically intermediate in relation to their parents, which would muddle any new genetic variants, in accordance with the hypothesis of blending inheritance.
The biological theory of mixing inheritance from the 19th century is no longer valid. The idea holds that a child will acquire a trait as an average of the values it receives from both of its parents. Phenotypes, or physical features, are intermediaries between parents and offspring in the mixed inheritance hypothesis. For instance, according to this hypothesis, a child born to a tall man and a short woman will be between her parents' heights.
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Once you've completed your virtual lab, apply what you have learned about the scientific method and the
scientific process by answering the following questions. Since you are only doing a few experiments, your
answers will be more in line with the "exploration and discovery" and the "testing ideas".
1. Describe what part of the virtual experiment relates to the exploration and discovery part of the
scientific process.
I
If you've ever witnessed anything and questioned why or how it occurred, you've begun the journey of discovery.
what is a virtual lab ?
A virtual laboratory is an on-screen simulator or calculator that allows you to put ideas to the test and examine the outcomes. Learners employ innovative technology to conduct a series of experiments that produce real-world effects. For example, students can "tinker" with laboratory equipment that performs almost exactly like it would in real life.
If you've ever witnessed anything and questioned why or how it occurred, you've begun the journey of discovery. If you continue on your adventure, you will most likely come up with some of your own solutions to your query. Even farther down the road, you can consider how to determine whether your responses are right. Whether you realise it or not, you are now pursuing a route known to scientists as the scientific method. You have very nearly finished all a scientist might do in a laboratory or out in the field when undertaking research if you conduct some experiments to check whether your answer is right and write down what you discover in a report.
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what is the process of converting the instructions from nucleic acid to protei
The process of converting the instructions from nucleic acid to protein is known as Translation. In this process, the protein strand is produced from the messenger RNA molecule. The proteins are also called as the " workhorses of the cell".
The translation machinery is housed within a specialised organelle called the ribosome in all cells. Mature mRNA molecules in eukaryotes should indeed leave the nucleus and transport to the cytoplasm, where ribosomes are found. Ribosomes, on the other hand, can bind to mRNA while it continues to be transcribed in prokaryotic organisms. Translation begins at the 5' end of the mRNA whereas the 3' end remains connected to DNA.
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The process of converting the instructions from nucleic acid to protein is known as Translation. In this process, the protein strand is produced from the messenger RNA molecule. The proteins are also called the " workhorses of the cell".
The translation machinery is housed within a specialized organelle called the ribosome in all cells. Mature mRNA molecules in eukaryotes should indeed leave the nucleus and transport to the cytoplasm, where ribosomes are found. Ribosomes, on the other hand, can bind to mRNA while it continues to be transcribed in prokaryotic organisms. Translation begins at the 5' end of the mRNA whereas the 3' end remains connected to DNA.
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suppose a person has a mutation in their dna and the first triplet for the insulin gene reads t a t. the normal gene reads t a g. what amino acid does the mutant dna and the normal dna code for and will the person with this mutation be diabetic? group of answer choices
The amino corrosive that it codes for is AUA when it ought to understand AUC.
The right response is The TAT codon (UAU for RNA) codes for tyrosine (an amino corrosive) though the TAG (UAG for RNA) codon is a stop codon.
Indeed, the individual will become diabetic in light of the fact that the subject has been transformed into gibberish.
In this way, there was a gibberish transformation (change of an amino corrosive codon to a stop codon). In this manner, the combination of insulin will be unimaginable in light of the fact that the principal codon is an untimely stop codon, so there will be no insulin and an improvement of insulin-subordinate diabetes.
Additionally, the hereditary code likewise incorporates stop codons, which code for no amino corrosive. The stop codons act as end signals for interpretation. At the point when a ribosome arrives at a stop codon, interpretation stops, and the polypeptide is delivered.
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Tyrosine, an amino acid, is coded for by the TAT codon (UAU for RNA), whereas the TAG codon (UAG for RNA) is a stop codon.
Genetic mutations are any changes to an organism's genome's nucleotide sequence, which may occur in a gene's coding sequence and alter the triplet of nucleotides or codon that designates a certain amino acid.
With the help of this information, we can see that a genetic mutation may alter the amino acids that are added during translation, but in order to identify a change in phenotype, we need to know which gene this mutation affects.
Thus, a nonsense mutation occurred (conversion of an amino acid codon to a stop codon). Because the first codon is a premature stop codon, the synthesis of insulin will be difficult, leading to a lack of insulin and the onset of insulin-dependent diabetes.
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Human cells divide every day for normal growth, replacement of cells, and tissue repair. The dividing cells proceed through the three phases of the cell cycle as shown in the figure. When a person experiences a cut, damaged skin cells secrete a protein called epidermal growth factor (EGF). Epidermal (skin) cells in the vicinity of the injury possess proteins in their cell membranes called epidermal growth factor receptors (EGFR)
(a) Identify the THREE major stages of interphase, and describe the sequence in which they occur.
(b) Describe the most likely role of EGF and the role of EGFR in a cell signaling pathway. Describe how the cellular response to EGF results in tissue repair.
(c) Cancer can result from disruptions in cell cycle control. Mutations that increase the production of EGFR have been associated with skin cancer of the head and neck. Describe how a mutation outside of the coding region of a gene that encodes EGFR could lead to the overproduction of EGFR protein in a skin cell.
Answer:
(a) The three major stages of interphase are:
G1 phase: This is the first stage of interphase and is also known as the "growth" phase. During this stage, the cell grows and carries out metabolic functions.
S phase: This is the second stage of interphase and is also known as the "synthesis" phase. During this stage, the cell replicates its DNA in preparation for cell division.
G2 phase: This is the third and final stage of interphase and is also known as the "second growth" phase. During this stage, the cell checks for errors in the replicated DNA and makes any necessary repairs.
The sequence in which these stages occur is G1 phase, S phase, and G2 phase.
(b) EGF and EGFR play a role in a cell signaling pathway. EGF is a growth factor that is secreted by damaged cells, it binds to its receptor (EGFR) on the surface of nearby undamaged cells, this binding triggers a cascade of intracellular signals that lead to the activation of a set of genes responsible for cell proliferation, migration, and survival. This results in the repair of the tissue.
(c) Mutation that occurs outside of the coding region of a gene that encodes EGFR, for example in the promoter region, can lead to the overproduction of EGFR protein in a skin cell. The promoter region is responsible for controlling the expression of a gene, and if a mutation occurs in this region, it can lead to the overproduction of the gene's protein product, in this case, EGFR. This overproduction of EGFR can then lead to uncontrolled cell growth and division, which is a characteristic of cancer.
which pigment molecule in plant cells absorbs light
The pigment molecule in plant cells absorbs light Is the chlorophyll. Chlorophyll, any member of the most important class of pigments involved in photosynthesis.
the process by which light energy is converted to chemical energy through the synthesis of organic compounds. Chlorophyll is found in virtually all photosynthetic organisms, including green plants, cyanobacteria, and algae. It absorbs energy from light; this energy is then used to convert carbon dioxide to carbohydrates.
Chlorophyll occurs in several distinct forms: chlorophylls a and b are the major types found in higher plants and green algae; chlorophylls c and d are found, often with a, in different algae; chlorophyll e is a rare type found in some golden algae; and bacterio-chlorophyll occurs in certain bacteria. In green plants chlorophyll occurs in membranous disklike units (thylakoids) in organelles called chloroplasts.
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identify each question as applying to either microsociology or macrosociology.
Microsociology:- 2) How can a conversation between family members turn into a shouting match? 3) At a four-way stop, how do two drivers decide who should proceed first?
Macrosociology:- 1) Why does an army's officer-enlisted relationship differ from its navy's? 4) Why does assimilation differ across different immigrant groups?
The sociology subfields of macrosociology and microsociology each focus on a different level of analysis. Microsociology studies social interactions and dynamics inside small groups, whereas macrosociology examines large patterns and structures across society as a whole. The investigation may fall under either of the two branches, depending on its topic, breadth, and depth. If you could specify which of the two branches the inquiry relates to, I would be happy to help you figure it out.
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Identify each question as applying to either microsociology or macrosociology.
1) Why does an army's officer-enlisted relationship differ from its navy's?
2) How can a conversation between family members turn into a shouting match?
3) At a four-way stop, how do two drivers decide who should proceed first?
4) Why does assimilation differ across different immigrant groups?
The Questions in Microsociology are :
How does a family conversation escalate into a shouting match?How do two drivers decide who goes first at a four-way stop?The Questions in Macrosociology are :
Why does the officer-enlisted relationship differ between a country's army and its navy?Why do some immigrant groups assimilate faster than others?Microsociology and macrosociology are two different perspectives or levels of analysis used in the study of sociology.
Microsociology focuses on the study of small-scale social phenomena, such as face-to-face interactions and individual behavior within a particular social context. This level of analysis is concerned with how individuals interact with each other, how they interpret social situations, and how they form and maintain relationships with others.
Macrosociology, on the other hand, focuses on the study of large-scale social structures and processes, such as social institutions, cultural patterns, and societal-level trends and changes. This level of analysis is concerned with how social structures and institutions shape and influence individuals and groups within a society, and how these structures change over time.
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Complete Question:
Identify each question as applying to either microsociology or macrosociology.
- How does a family conversation escalate into a shouting match?
- Why does the officer-enlisted relationship differ between a country's army and its navy?
- How do two drivers decide who goes first at a four-way stop?
- Why do some immigrant groups assimilate faster than others?
A bilayer (2 layers) of phospholipids that surrounds and encloses a cell; physical boundary between the intracellular space and the extracellular environment.
A bilayer (2 layers) of phospholipids surrounds and encloses a cell; the physical boundary between the intracellular space and the extracellular environment is the plasma membrane.
A cell is protected by its cell membrane, also known as the plasma membrane. Additionally, it offers a stable atmosphere inside the cell. And that membrane serves a variety of purposes. One is to move compounds out of the cell that is harmful as well as nutrients into the cell.
The plasma membrane mediates cellular transport, transmits cellular signals, and shields the cell from its surrounding environment. The plasma membrane is made up of phospholipids, cholesterol, proteins, and carbohydrates, according to the fluid mosaic model.
The semi-fluid living substance known as protoplasm, also known as plasm, is found inside each cell. The plasma membrane is a biological membrane that houses this living material or plasm.
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(b) Some inherited conditions can be fatal but medical treatment is often available.
Explain what would happen to the frequency of alleles for these inherited conditions if medical treatment was not available.
Some inherited conditions which can be fatal but medical treatment is often available for these include cystic fibrosis. The passage of faulty genes keep on increasing as these are not treatable.
What is Cystic fibrosis?An inherited disorder is a condition which is caused when an individual passes faulty genes on to their offspring. So, the offspring inherits certain alleles from their parents. Some examples of inherited disorders may include cystic fibrosis, sickle cell anemia.
Cystic fibrosis is an inherited life-threatening disorder which damages the lungs and digestive system of the affected person.
Cystic fibrosis affects the cells which produce mucus, sweat, and digestive juices. Cystic fibrosis causes these fluids to become thick and sticky in the system. They then plug up tubes, ducts and passageways.
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a scientist has two identical plants placed by a window. one is in a red pot, and the other is in a yellow pot. she waters the one in the red pot with regular water and the one in the yellow pot with nitrogen-enriched water. after 5 days, she counts the number of flowers on each plant. what was her scientific question?
The required scientific question should include both dependent and independent variables. Therefore, question a) is correct.
A scientific question encourages investigation, the design of an experiment, and encourage the use of the observation generated by the question to identify solutions. This question is framed using two key variables - (i) the dependent variable and (ii) the independent variable. The independent variable has an impact on and alters the dependent variable.
In the given scenario, these two variables are present. Here, the number of flowers is the dependent variable and the water or nitrogen-enriched water is the independent variable. In the given option, option a includes these two variables. Therefore, question a is a required question.
The complete question is -
A scientist has two identical plants placed by a window. one is in a red pot, and the other is in a yellow pot. she waters the one in the red pot with regular water and the one in the yellow pot with nitrogen-enriched water. after 5 days, she counts the number of flowers on each plant. what was her scientific question?
a) Does the amount of nitrogen affect the number of flowers on a plant?
b) Does the color of the pot affect the number of flowers on a plant?
c) Does sunlight affect the number of flowers on a plant?
d) Does time affect the number of flowers on a plant?
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jamaad is a forensic scientist who has just run a test on a substance. the results helped him narrow down the possibilities of what drug the substance could be. which type of test did jamaad run?
The correct option is B ; Positive , In forensic chemical analysis of an unknown material, the analytical technique is to restrict the possibilities until a drug is found. Following the ocular examination, presumptive or screening tests are performed.
The primary purpose of a forensic drug examiner is to positively identify any restricted substance found in a drug exhibit. The ideal procedure for this evaluation is Gas Chromatography/Mass Spectrometry (GC/MS), which is used routinely in most forensic laboratories.
Analysts in forensic drug chemistry employ scientific results to assist investigators in pursuing legal action against individuals suspected of a drug-related crime. The purpose of forensic drug chemistry is to evaluate whether or not the supplied sample contains an illicit substance.
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Full Question;
Jamaad is a forensic scientist who has just run a test on a substance. The results helped him narrow down the possibilities of what drug the substance
could be. Which type of test did Jamaad run?
O A. confirmatory
OB. positive
OC. presumptive
O D. beta
what is the glutamic acid made from transamination used for?group of answer choicesit enters the citric acid cycle.none of the choices are correct.it is used to produce atp.it is used to make other nonessential amino acids.
Glutamic acid, made from transamination ATP, can be used for several different purposes in the body. The most notable use is:
It enters the citric acid cycle. Glutamic acid can be converted into alpha-ketoglutaric acid, which then enters the citric acid cycle, also known as the Krebs cycle. Glutamic acid can be used as a precursor to make other nonessential amino acids such as proline, arginine and GABA. ATP is used to produce ATP. The citric acid cycle is one of the ways that the body produces energy in the form of ATP. It is important to note that the glutamic acid made from transamination is not only used for one specific purpose, it can be used for multiple purposes depending on the metabolic needs of the body.
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what is the basic unit of life and consists of a membrane enclosing water, dna, and other chemicals?
Answer:
Cell
Explanation:
A cell is the fundamental structural and functional unit of all living organisms.inside a cell there is nucleus which contains the genetic material that is DNA .anything less than a complete structure of a cell does not ensures independent existence .Cell was discovered by Robert Hooke and a living cell was first discovered by Anton von Leeuwenhoek .Hope this helps.
chronic myelogenous leukemia (cml) is a type of cancer that is caused by a specific chromosomal alteration that leads to the inappropriate expression of a kinase called abl. kinases are enzymes that put phosphate groups onto macromolecules such as proteins. a drug used to treat cml, imatinib, binds to the active site of abl kinase. why does this drug work to treat this type of cancer?
Chronic myelogenous leukemia (cml) is a type of cancer that is caused by a specific chromosomal alteration that leads to the inappropriate expression of a kinase called abl. This drug work to treat this type of cancer by binding to the active site and prevents the ability of Abl kinase to bind to its substrate.
Kinases are enzymes that put phosphate groups onto macromolecules such as proteins. a drug used to treat cml, imatinib, binds to the active site of abl kinase. It is a slowly progressing blood and marrow bone disease that usually occurs during or after middle age that rarely occurs in children.
Chronic myeloid leukemia that is CML referred to a type of cancer that starts in the blood-forming cells of the blood invades and marrow bone. It is also known as chronic myelogenous leukemia. It is a disease in which the bone marrow makes too many white blood cells.
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