A characteristic of liquids is surface tension. Surface tension refers to a liquid's limited capacity to resist an external force.
Even though they may be much denser than the liquid, we see items float on liquids and insects walk on lakes' surfaces due to surface tension. Van der Waal forces produce surface tension. Van der Waal forces are referred to as inter-molecular forces because they exist between the molecules of a single substance, such as water.
With an increase in temperature, the surface tension falls. The critical temperature of the liquid is the temperature at which the surface tension of the liquid is zero.
Key factors affecting Surface tension:
Temperature ↑ surface tension ↓Critical temperature Surface tension: ZeroThe critical temperature of the water is 3744KIncrease with impurity.Learn more about Surface Tension here:
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in corn, three dominant alleles are necessary for aleurone color. the genotype b– d– r– is colorful. recessive homozygosity for any one gene results in a colorless phenotype. predict the phenotypic ratios in the progeny of the following crosses. (not all numbers will be used.)
According to the stems, the percentages required for the color of the aleurone, the genotype b– d– r– is colored are B is 75%, D is 75% and R is 50%
What is genetic probability?The probability calculation in Genetics follows the same rules as the probability calculation in different games. It is determined by values ranging from 0 to 1, where 0 is the probability that this event will not occur at all and 1 is the certainty that this event will occur.
With this information, we can conclude that A probability rule that is very useful in genetics is the product rule, which states that the probability of two (or more) independent events occurring together can be calculated by multiplying the individual probabilities of the events.
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In corn three dominant genes are necessary for aleurone color. The genotype B__D__R is colored. Any homozygous recessive for one gene is colorless. Predict the expected phenotypic ratio COLORED: COLORLESS offspring from the cross of BbDdrr x BbDdRr.
Which of the following areas of study focuses on the exchange of energy, organisms, and materials between ecosystems? a. organismal ecology b. landscape ecology c. ecosystem ecology d. community ecology
The correct option is (b) landscape ecology.
A complex network of living things that interact to exchange food and energy is referred to as an ecosystem in ecology.
What are different ecology?The study of individual adaptations (morphological and behavioral) that allow them to live in a certain habitat is known as organismal ecology.The subject area known as "landscape ecology" is concerned with the relationship between ecosystem processes and landscape patterns. Thus, the landscape ecosystem frequently encompasses several ecosystems and investigates the interchange of materials, organisms, and energy.The biological field of ecosystem ecology studies how biotic and abiotic elements of an ecosystem interact. Ecosystem ecology thus concentrates solely on a particular ecosystem.The topic of community ecology examines how communities develop among populations of interdependent species. Community ecology thus concentrates on assemblages of related species within a community.Learn more about the Landscape ecology with the help of the given link:
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What type of graph might you create to show that the energy used in the U.S. comes - 50% from fossil fuels, 10% from water, 10% from wind, 30% from other sources?
triangle graph
triangle graph
line graph
line graph
bar graph
bar graph
circle or pie chart
The type of graph to create to show that the energy used in the U.S. comes - 50% from fossil fuels, 10% from water, 10% from wind, 30% from other sources is circle or pie chart (option D).
What is a pie chart?A pie chart is a pictorial graph in the shape of a circle, with segments representing related proportions.
A pie chart is majorly used to show percentages of a whole, and represents percentages at a set point in time.
The size of each slice in the pie is directly proportional to the number of data points that belong to a particular category.
Therefore, the type of graph to create to show that the energy used in the U.S. comes - 50% from fossil fuels, 10% from water, 10% from wind, 30% from other sources is circle or pie chart.
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The condition that exists when an organism gains or loses one or more chromosomes but not a complete haploid set is known as ________. aneuploidy euploidy polyploidy trisomy triploidy
The condition that exists when an organism gains or loses one or more chromosomes but not a complete haploid set is known as aneuploidy.
Aneuploidy is the presence of an abnormal number of chromosomes in a cell, for example a human cell having 45 or 47 chromosomes instead of the usual 46 It does not include a difference of one or more complete sets of chromosomes. A cell with any number of complete chromosome sets is called a euploid cell.
An extra or missing chromosome is a common cause of some genetic disorders. Some cancer cells also have abnormal numbers of chromosomes.
About 68% of human solid tumors are aneuploid. Aneuploidy originates during cell division when the chromosomes do not separate properly between the two cells (nondisjunction).
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The cell responsible for digesting and cleaning up tissue debris after a serious laceration is a.
A macrophage is the cell that breaks down and removes tissue debris after a serious laceration.
Describe tissue:A tissue is a cluster of cells with comparable structures and roles. The material that fills the spaces between the cells is called the intercellular matrix. Some tissues might have a lot of this, while others might not.
Which tissue is most important?In human bodies, connective tissue is the most prevalent type of tissue. It ties tissues and other cells together. It is commonly found in our blood, adipose tissue, collagen, bones, cartilage, and many other body parts. This demonstrates how crucial connective tissue is to our body's ability to support and defend itself.
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When an organ that has developed properly wastes away or decreases in size, it is undergoing?
When an organ that has developed properly wastes away or decreases in size, it is undergoing Atrophy.
Muscle atrophy can arise because of malnutrition, age, genetics, a lack of physical pastime or positive scientific situations. Disuse atrophy takes vicinity while you do not use your muscles sufficient. Neurogenic atrophy happens because of nerve troubles or ailments.
Decrease in length or wasting away of a body element or tissue moreover. Arrested improvement or lack of a element or organ incidental to the normal improvement or existence of an animal or plant. atrophy.
Muscle atrophy signs encompass stability troubles, lack of muscle coordination, facial weak point, tingling sensation in arms and legs, vision issues, fatigue, and extra. In a few cases, people with this condition additionally experience trouble speak and swallowing.
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Juan and sergei are making a display about water conservation. To make a greater visual impact, they decide to add blue food coloring to the water, but just enough that it is noticeable. Juan adds 2 drops of food coloring to the water, and stops because he can see the blue color. Sergei tells him to put another drop in because he doesn’t see any blue yet. Juan’s _______________ is probably lower than sergei’s.
cuban sugar cane pol have been suggested to reduce plasma ldl-c levels by suppression of the key enzyme governing biosynthesis, hmg-coa reductase
The key enzyme governing biosynthesis, hmg-coa reductase that catalyses the synthesis of a precusor of cholesterol as well as non-sterol isoprenoids.
More than 50 studies have documented substantial drops in plasma lipid levels in response to daily doses of 2–40 mg of Cuban sugar cane policosanol (SCP) combinations. However, a number of experiments on animals and people carried out outside of Cuba using non-Cuban combinations have been unable to duplicate the effectiveness of policosanols seen in earlier investigations. The goal was to assess how the genuine Cuban SCPs affected the plasma lipids of hypercholesterolemic healthy participants. A randomised, double-blind crossover research was used to provide 10 mg SCPs or a placebo mixed with margarine to 21 volunteers over the course of 28 days while they were under supervision.To learn more about plasma ldl-c levels.
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The interactions depicted here involve a highly specific binding between antigen and receptor (see Figure 5.17). How is this similar to an enzyme-substrate interaction (see Figure 8.15)?
An antigen and a defense (antibody) unique to that antigen interact non-covalently to produce specific immunological responses, such as interactions between enzymes and their substrates.
What is an enzyme-substrate?The enzyme's active site receives a substrate. The enzyme-substrate complex is created via this. A complex of enzyme products is then formed as a result of the reaction, which transforms the substrate into products. The products then depart the enzyme's active site.
Why is enzyme-substrate specificity important?The substrate and enzyme must interact during an enzyme activity for the enzyme to operate as a catalyst in a chemical process. Additionally, the majority of enzymes have a high degree of substrate-specificity. One of the most vital characteristics that set enzymes apart is their ability to recognize certain substrates.
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27. In a study researchers looked at the effects of nutrition on reading ability. In Group A, children
ate at least three ounces of dark green vegetables every day for one month. In Group B, children
were fed their regular diet. At the end of the month, the children took a reading comprehension
test. Those who ate the green vegetables every day for one month (Group A) did not vary in their
test scores when compared to Group B.
What is the Experimental Group:
What is the Control Group:
What is the Dependent variable?
What is the Independent variable?
In a study researchers looked at the effects of nutrition on reading ability. In Group A, children ate at least three ounces of dark green vegetables every day for one month. In Group B, children were fed their regular diet. At the end of the month, the children took a reading comprehension test. Those who ate the green vegetables every day for one month (Group A) did not vary in their test scores when compared to Group B.
Experimental group- Students group A & B
Control Group- Diet
Independent variable- Diet
Dependent variable- Reading comprehension
Experimental group is the people on whom the experiment is done in the following case will the children in Group A and Group B.
Control Group in this case will be the diet the children were provided i.e. for Group A having ,diet of dark vegetables and Group B having regular diet.
Independent variable is the variable that we manipulate and control in experiment. in this case will be the diet of the children that has been manipulated for both the groups that is manipulated for measurement.
Dependent variable is the variable that is dependent on independent variable and changes with its manipulation. It will be the ability of reading the comprehension by the students of both the groups.
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Which of the following would not help a virus avoid triggering an adaptive immune response? a. having frequent mutations in genes for surface proteins b. infecting cells that produce very few MHC molecules c. producing proteins very similar to those of other viruses d. infecting and killing helper T cells
When an innate immune response fails to eliminate a new infection, adaptive immunity is activated, and antigen and activated antigen-presenting cells are delivered to the draining lymphoid tissues.
How do viruses avoid the immune response?When an innate immune response fails to eliminate a new infection, adaptive immunity is activated, and antigen and activated antigen-presenting cells are delivered to the draining lymphoid tissues.
Viruses avoid detection by pattern recognition receptors, T cell receptors, and antibodies by altering their receptor ligands. Viruses attack each stage of antigen processing and presentation by MHC molecules, preventing T cells from recognizing them.
Specificity, immunological memory, and self/nonself recognition are characteristics of adaptive immunity. A clonal selection of lymphocytes that respond to a specific antigen is used in the response. Specificity for a specific organ is not a feature of the adaptive immune system.
Therefore, the correct answer is option c. producing proteins very similar to those of other viruses.
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Hair is largely made up of the protein keratin. In a short essay (100-150 words), explain why a shampoo containing protein is not effective in replacing the protein in damaged hair.
Shampoo includes whole keratin protein, but cells require it in a digested state, thus it cannot replace the protein in damaged hair. Keratin is a helical protein made up of amino acids that have been linked together.
What function does keratin serve?Keratin is a protein that assists in the creation of your skin's outer layer, hair, and nails (epidermis). Your skin is protected, wounds are treated, and your hair and nails are maintained.
Keratin is a kind of protein present in the skin. It stiffens the skin and acts as a protective barrier.
Keratin is a fibrous structural protein present in the skin, hair, nails, horn, hooves, wool, and feathers. Keratin plays critical structural and protective activities, particularly in the epithelium.
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The function of keratin is to? a. prevent the entry of water b. prevent the entry of pathogens c. both a and b d. both a and b, and prevent the loss of water
The function of the keratin is to both a and b, and prevent the loss of water.
What is keratin?Keratin is a protein that is going to be a main molecule in the outer layers of the epidermis, in hair and nails. It is a molecule characterized by its hardness, which helps the skin to be firm and elastic. Its function is to give impermeability to the skin and protection so that pathogens and water from it are repelled.
Therefore, we can confirm that the function of the keratin is to both a and b, and prevent the loss of water.
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A drop in blood pH causes an increase in heart rate. What is the function of this control mechanism?
The heart rate lowers when the blood's pH rises. The deoxygenated blood is sent to the lungs at its highest rate to expel carbon dioxide in an effort to increase heart rate. The blood's pH is lowered and becomes acidic as a result of the increased carbon dioxide levels.
Blood has a pH between 7.35 and 7.45, making it mildly alkaline. The pH of the blood is affected by the body's level of carbon dioxide, electrolyte content, and weak acids.The effects of changes in blood pH on the body's processes are influenced by a variety of other factors, including food and health. For instance, a drop in blood pH causes an increase in heart rate.When the blood's pH falls, it means that the blood's level of carbon dioxide has risen. Thus, to maintain the body's level of carbon dioxide, the heart pumps more deoxygenated blood to the lungs.The effect is an increase in heart rate. A component of adaptive homeostasis is the control mechanism. Therefore, a decrease in blood pH causes an increase in heart rate, which is controlled by the body's homeostasis.Learn more about the blood vascular system with the help of the given link:
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a trotter named macy is mated to a pacer named joe and their offspring, tina, is a pacer. macy's parents were both trotters. her father was genetically tested and he was homozygous dominant for this trait. match the horse with their genotypes
Here all the pacers are homozygous recessive which is (tt).
Basically in horses pacer are dominated by trotter, since here Macy a trotter (T) is mated with joe is a pacer (t), the offspring was a pacer, so Here all the pacers are homozygous recessive,just for the totter to have a pacer as the heterozygous must be (Tt).
Genotypes are the genetic makeup of an organism, whereas each individual has a copy of each of the genes, if those are identical copies, the individual is called homozygous, for the recessive gene it had to be homozygous for that gene.
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Begin by making a list of questions that will help you conduct research on the topic. To get you started, here are some questions that may lead you to a better understanding of the topic:
What is cancer? Is cancer only one disease?
How does cancer affect the cell cycle and the growth of cells? How is this process similar to or different from how an infectious disease affects cells?
How do genes play a role in cancer progression?
Are there any environmental or pathogenic factors that can cause cancer?
How does cancer progress in the body? Why is cancer difficult to treat in the later stages?
What do the terms stage and grade mean in the context of cancer?
What current treatments exist for cancer?
What treatments are on the horizon?
What are the challenges of treating or curing cancer?
Now write down four more questions about cancer that will help you strengthen your arguments in your research paper.
A set of illnesses known as cancer involve abnormal cell proliferation and have the ability to invade or spread to different bodily regions.
What is cancer? Is cancer only one disease?
A set of disorders known as cancer involve aberrant cell proliferation and have the ability to invade or spread to different bodily regions.
The cells in a particular area of the body proliferate and replicate uncontrollably. The malignant cells have the ability to enter nearby healthy tissue and kill it, including organs. Sometimes, cancer starts in one place of the body before moving to another. The term "metastasis" refers to this action.
Cancer may potentially travel to distant areas of the body through the bloodstream. These components could be the brain, liver, lungs, or bones. The malignancy is given its original location's name even if it spreads.
An umbrella term for more than 100 distinct diseases is cancer. Almost anywhere in the body can see its development.
Four main types of cancer are:
CarcinomasSarcomasLeukemiasLymphomasTo know more about Cancer, click on the link below:
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If someone is severely burned, how might the functions of skin differ than someone who has not been burned?
scientists calculated the net primary productivity at two different forest sites. both forests have the same gross primary productivity. forest a has a net primary productivity of 1,650kcal/m2/year, and forest b has a net primary productivity of 1,110kcal/m2/year.
A producers have lower rates of cellular respiration than forest B producers.
What is NPP and GPP in ecosystem?Gross primary productivity is the rate of photosynthesis. Net primary productivity is the rate of storage of organic matter except which is utilized for the respirations by plants. Hence , we can say that NPP = GPP- plant respiration .
Forest A producers have lower rates of cellular respiration than forest B producers. (Since gross primary productivity is the same, forest B has a lower net primary productivity; therefore, it has a higher rate of cellular respiration.)
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Karen wants to quit smoking, but she loves the way that inhaled nicotine makes her feel. where in her brain is karen's pleasure processed?
Karen wants to quit smoking, but she loves the way that inhaled nicotine makes her feel. where in her brain is Karen's pleasure processed to the limbic system.
The spinal wire includes circuits of neurons that could control a number of our easy reflexes consisting of moving a hand away from a warm surface, with out participation from the thoughts. The CNS communicates with the relaxation of the body thru the nerves, which may be bundles of fibers that transmit signals to and from the CNS.
The sympathetic branch might likely be activated. It mediates the fight or flight reaction in demanding situations. The control institution and experimental enterprise are compared in opposition to each other in an test. The most effective difference between the two corporations is that the unbiased variable is changed within the experimental institution.
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How do structural differences between starch and cellulose lead to functional differences in plants?
Starch may be either straight or branched in its structure, and since it can form compact structures and is simple to break down, plants employ it as a storage medium for energy. The molecules that make up cellulose are bonded to one another in opposing directions. Cell walls are composed of cellulose, which provides plant cells with protection as well as structure.
This is further explained below.
What are plants?Generally, Plants are the most common kind of photosynthetic eukaryotic organisms that belong to the kingdom Plantae.
Historically, the kingdom of plants encompassed all living things that were not animals, including algae and fungi; however, all current definitions of Plantae exclude the fungi and some algae, as well as the prokaryotes.
This is because the plant kingdom evolved to include only animal-free life forms.
In conclusion, Plants use starch as a storage medium for energy because it can form compact structures and is easy to break down. Starch may be either straight or branched in its structure. Cellulose is characterized by its molecular components' antiparallel orientations and the direction of its intermolecular bonds. Cellulose provides structure and defense for plant cells in the form of cell walls.
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Anyone in grade 10-11?? Who has ig or S?
A hot air balloon lifts 50 meters vertically into the air and then comes back down. What are the displacement and distance of the balloon’s flight?
The displacement is zero and the distance is 100 meters
Flow of blood and the movement of eye muscles are not under our control. Do you agree?
Give reason
If you carried out an experiment growing different types of bacteria in liquid culture. which type of organism would you find growing throughout the tube?
The kind of bacteria that could be found growing through the tube in the culture are facultative anaerobes and aerotolerant anaerobes.
What are bacteria?Bacteria are single celled organisms that normally studies by the use of a culture. The bacteria could be grown in a culture and the rate of growth of the bacteria could be studied.
Facultative anaerobes are those types of anaerobes that could survive with or without oxygen. The organisms that could only survive in the absence of oxygen are called obligate anaerobes and they are not found scattered around the liquid culture.
Again, we have different types of bacteria in liquid culture. We know that different types of bacteria would be found at different points in the culture depending on the characteristics of the bacteria.
Thus, the kind of bacteria that could be found growing through the tube in the culture are facultative anaerobes and aerotolerant anaerobes.
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A vegetarian who only avoids meat, fish, and poultry and consumes eggs and dairy along with plant foods is referred to as a?
Answer:
Lacto-ovo vegetarian diet
Explanation:
The prefix “lacto” refers to milk or dairy products. “ovo” refers to eggs.
A lacto-ovo-vegetarian diet consists of eggs, milk, cheese, yogurt, and other dairy products, while excluding all animal-derived meats, fish, and poultry.
A client has a cerebrovascular accident and is incontinent of bowel and bladder. incontinence of urine in this client is related to a?
Neurogenic bladder is the incontinence of urine in this client who has a cerebrovascular accident and is incontinent of bowel and bladder.
A person is considered to have neurogenic bladder, which covers a range of urine issues, when they are unable to regulate their bladder due to a problem with their brain, spinal cord, or nerves.
Diseases like multiple sclerosis (MS), Parkinson's disease, or diabetes can cause this nerve injury. A person with urinary incontinence accidentally releases pee. Urinary incontinence, sometimes referred to as an overactive bladder, can affect anybody.
The most typical signs of neurogenic bladder are these:
Urinary tract illness (UTI)Renal stones.Incontinence of the urine (unable to control urine)Little urine produced upon voiding.Urge and frequency of urination.To know more about urine incontinence go to https://brainly.com/question/27974899
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Annual plants (grasses) growing in a recently burned patch of forest represent the first stage in
In the nucleus of a dividing cell, the chromatin condenses so that each , now made of two sister chromatids, can be seen with a light microscope.
In the nucleus of a dividing cell, the chromatin condenses so that each chromosome, now made of two sister chromatids, can be seen with a light microscope.
What is a Chromosome?A Chromosome is a linear fragment of the genetic material contained in a eukaryotic cell, which is composed by two sister chromatids before mitotic cell division.
Chromosomes form part of the genome of the cells and they have a size suitable to see at 1000 X microscope magnification.
Each chromosome before cell division (either mitosis or meiosis) is composed of two sister chromatids that are linked at the centromere level in order to be correctly separated (segregated) during this process.
In conclusion, in the nucleus of a dividing cell, the chromatin condenses so that each chromosome, now made of two sister chromatids, can be seen with a light microscope.
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How do these animals get the heat needed to keep their bodies so warm?
Answer:
On the animal body, there is a thick coat of hair. These hairs trap a lot of air in them which helps to keep their body warm. Mammals generate heat mainly by keeping their metabolic rate high. The cells of mammals have many more mitochondria than the cells of other animals. The extra mitochondria generate enough energy to keep the rate of metabolism high. Mammals can also generate little bursts of heat by shivering
Explanation:
if you wanted to use a molecular clock to date a relatively recent divergence event - one that occurred in the last 100 million years or so - which of the four types of genes would make the best clock? why?
The gene that would make the best molecular clock to date a relatively recent divergence event will be: (5) Fibrinopeptides, because they have changed the most over that time period.
Molecular clock is a biological molecule that can be used to find out how evolution occurred over time. The rate of change of proteins or DNA can be estimated using molecular clocks. The rate of divergence can also be calculated.
Fibrinopeptides are the part of glycoprotein fibrinogen, which are cleaved by the enzyme thrombin to be converted into fibrin monomers. These have been one of the most rapidly evolved proteins. There are two types of fibrinopeptides: fibrinopeptide A and fibrinopeptide B.
The question is incomplete, the complete question is:
If you wanted to use a molecular clock to date a relatively recent divergence event - one that occurred in the last 100 million years or so - which of the four types of genes would make the best clock? Why?
Hemoglobin, because of its steady rate of change.Cytochrome c, because it has changed relatively little over that time.A histone gene, because it has changed the most over that time period.A histone gene, because it has changed relatively little over that time.Fibrinopeptides, because they have changed the most over that time period.To know more about molecular clock, here
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The part of the nephron that protects the medullary gradient from the lose of osmotically active solutes is the?
The part of of the nephron that protects the medullary gradient are loop of henle and collecting duct.
The gradient in concentration is produced by the Henle loop in what way?Water and solutes move down their concentration gradients until their concentrations within the descending tubule and the interstitial space have reached their equilibrium. This happens as active reabsorption of solutes from the ascending limb of the loop of Henle increases the concentration of solutes within the interstitial space (space between cells).
Because the blood flow through these capillaries is very slow, any solutes that are absorbed into bloodstream have time to diffuse back into interstitial fluid.
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