In the electron transport chain, the oxygen atoms in O2 becomes part of H2O molecules
An electron transport chain is a succession of protein complexes and other molecules that transmit electrons from electron donors to electron acceptors via redox processes and relate this electron transfer with the flow of protons across a membrane.
The entire biological process is made up of four pathways: glycolysis, pyruvate oxidation, the Krebs cycle, and oxidative phosphorylation.
The fundamental function of the final stage of cellular respiration, the electron transport chain, is to transmit energy from electron carriers to even more ATP molecules, the "batteries" that power work within the cell.
Because it generates the most ATP, the ETC is the most essential stage of cellular respiration in terms of energy.
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fill in the blank. wilkins and franklin studied the structure of dna using___, a technique to examine molecules, and helped watson and crick determined that the shape of the molecule was a .
Wilkins and franklin studied the structure of dna using X-ray diffraction, a technique to examine molecules, and helped watson and crick determined that the shape of the molecules was a Double Helix.
X-rays diffraction through the molecule yielded a shadow picture of the molecule's structure by the X-rays bounced off its component parts.In 1953, this technique was discovered by Watson and Crick about DNA that marked a milestone of science and gave rise to modern molecular biology.
X-ray diffraction is defines as a widely used technique to assess the crystallinity and structure of solid samples. The process of scattering in which X-rays are scattered by the electrons of atoms present in the sample without changing the wavelength.It is the optical power instrument's ability to produce separate images of two adjacent points.
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which of the following are characteristics shared by all living things, a fact that supports the conclusion of common ancestry?
Similarities between biological molecules, like structural homologies, can reveal shared evolutionary ancestry. At their most fundamental level, all living things share: similar genetic makeup (DNA) genetic sequences that are identical or very close.
What does ancestry mean?Ancestry is the term used to describe a person's ethnic background , descent, "roots," or ancestry, as well as the place of the person's birth, the birthplace of their parents, or the birthplace of their ancestors before they immigrated to the United States. Therefore, the phrase "genealogical ancestry" refers to forebears who may be identified in a family tree and pedigree. It is frequently quantified; for instance, if one of your eight great-grandparents belongs to X, you would refer to yourself as "one eighth X."
What does ancestry check for?These tests examine a person's complete genome and a huge number of individual changes (also known as single nucleotide polymorphisms, or SNPs). To assess a person's ethnic heritage, the outcomes are compared to related SNPs in a testing database.
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match the phrases to the term thy describe to test understanding of the structure of antibody molecule
The correct phrase with the term to test the understanding of the structure of antibody molecule:
1. The two arms that bind to antigen: Fab
2. Part of antibody involved in binding to various cells and molecules of the immune response: Fc
3. Region between Fab and Fc that allows swivelling of the Fab: H-inge region
4. Holds polypeptide chains together: Disulfide bonds
Аn аntibody, аlso known аs аn immunoglobulin, is а Y-shаped structure which consists of four polypeptides - two heаvy chаins аnd two light chаins. This structure аllows аntibody molecules to cаrry out their duаl functions: аntigen binding аnd biologicаl аctivity mediаtion.
Eаch function is cаrried out by different pаrts of the аntibody: frаgment аntigen-binding (Fab frаgment) аnd frаgment crystаllizаble region (Fc region).
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as a serious dancer, justine watches what she eats. she knows that she is underweight, but fears that if she starts eating more that she will get fat. in addition to a preoccupation with food, she has also stopped menstruating. her behaviors suggest that she might be suffering from . anorexia nervosa bulimia nervosa compulsive exercise phobic disorder
As, justine watches what she eats, she knows that she is underweight, but fears that if she starts eating more that she will get fat and in addition to a preoccupation with food, she has also stopped menstruating, her behaviors suggest that she might be suffering from anorexia nervosa
Anorexia nervosa can be defined as eating disorder characterized by an abnormally low body weight also the patient have an intense fear of gaining weight and a version and perception of weight.
anorexia also has many symptoms like, the sense of fatigue, sluggish behavior, dry and yellow skin, vomiting, thinning of bones, having brittle hairs and nail, some serious could be Cardiac complication or Heart, kidney and liver failure.
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Evaluate each of the statements below. Select those that accurately describe the role of genes and chromosomes in the process of inheriting a specific trait. Choose all THREE that apply. Responses A Chromosomes are made of DNA.Chromosomes are made of DNA. B Alleles are the different forms of a gene that can exist.Alleles are the different forms of a gene that can exist. C Chromosomes contain genes that control the inheritance of traits.Chromosomes contain genes that control the inheritance of traits. D Genes are made of chromosomes and contain all of the genetic information for an organism.Genes are made of chromosomes and contain all of the genetic information for an organism. E There are 26 pairs of chromosomes in humans.
Explanation:
please explanations, questions not too clear
in achieving stable molecular configurations, which of these five atoms will bond with the fewest number of hydrogen atoms, and which will bond with the most? oxygen will bond with the fewest number of hydrogen atoms (2); phosphorus will bond with the most (5). both oxygen and sulfur will bond with the fewest number of hydrogen atoms (2); carbon will bond with the most (4). both phosphorus and sulfur will bond with the fewest number of hydrogen atoms (2); nitrogen will bond with the most (5). nitrogen will bond with the fewest number of hydrogen atoms (3); sulfur will bond with the most (6).
Carbon will bond with the majority of hydrogen atoms, whereas oxygen and sulphur will bond with the least (2).
(4). Chemical bonds, also known as electrical forces, may be categorised into five different groups: ionic, covalent, metallic, van der Waals, & hydrogen bonds. Two oxygen atoms are bound together by a covalent connection to form the diatomic molecule known as molecular oxygen (O2). Many organic compounds contain the carbon-hydrogen bond (C-H bond), which is a chemical link between hydrogen and carbon atoms. Since there is just one covalent link present, up to four hydrogen atoms can share the outer valence electrons that belong to carbon. Hydrogen bonds develop between nearby oxygen and hydrogen of adjacent water molecules in the case of water.
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please helppp
and please put numbers beside it so it's in order thank you,
Answer:
A - throposphere, B - stratosphere, C - mesosphere, D - thermosphere
Explanation:
red line shows temperature change
assuming independent assortment, why did mendel expect a 3:1 ratio of dominant to recessive phenotypes for each of the three traits in the trihybrid cross? assuming independent assortment, why did mendel expect a 3:1 ratio of dominant to recessive phenotypes for each of the three traits in the trihybrid cross? mendel predicted that when inherited together, the three traits in the trihybrid cross would always sort dominant allele with dominant allele and recessive allele with recessive allele. for these three traits, mendel observed that plants always produced progeny in a 3:1 ratio regardless of the genotypes and phenotypes of the parents. mendel predicted a 3:1 ratio because he was performing a trihybrid cross. the word root tri- means 3. mendel predicted that independently assorting traits in a trihybrid cross would behave the same way that they would if monohybrid crosses were conducted separately for each trait. submitrequest answer
Mendel predicted a 3:1 ratio of dominant to recessive phenotypes for each of the three traits in the trihybrid cross based on the principle of independent assortment.
This principle states that genes for different traits are inherited independently of each other and are passed on to offspring in a random manner. In a trihybrid cross, each trait has two possible alleles, one dominant and one phenotypes recessive. Mendel assumed that each allele traits had an equal chance of being passed on to the offspring, and that the alleles for each trait would be inherited independently of one another. Therefore, the probability of inheriting a specific combination of dominant and recessive phenotypes alleles for the three traits would be (1/2)^3 = 1/8. With 3 dominant alleles and 1 recessive phenotypes allele, this results in a 3:1 ratio of dominant to recessive phenotypes.
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The application of the comparative method in his research in Papua New Guinea led coauthor Robert Welsch to focus on
Robert Welsch, a coauthor, focused on mask collectors, villagers, and museum collections as a result of using the comparative approach during his research in Papua New Guinea. Therefore, option b is right.
In anthropology, the comparative method helps the researcher to test hypotheses about the relations between the aspects of cultural systems by using data and information from other societies. This helps them to make comparisons between people and their past and present culture, related species, and fossils. This helps to understand one's customs and culture by studying their cultural background.
By speaking with village elders in several villages, reading published and unpublished descriptions of mask collectors who visited various villages, and examining museum collections, the coauthor Robert Welsch can understand the villagers in Papua New Guinea.
The complete question -
The application of the comparative method in his research in Papua New Guinea led coauthor Robert Welsch to focus on
(a) published and unpublished accounts of mask collectors who visited different villages
(b) all of the answers are correct
(c) interviews of village elders in different villages
(d) museum collections
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In fMRI, the magnetic signal being recorded changes when brain activity
changes, but the change in the magnetic signal:
A.Is delayed by about 6 milliseconds because this is how long it takes for
blood flow to change after the brain activity changes
B.Is delayed by about 6 seconds because this is how long it takes for
blood flow to change after the brain activity changes
C.Is delayed by about 6 milliseconds because this is how long it takes for
the magnetic signal to travel from the brain to the scanner
D.Is delayed by about 6 seconds because this is how long it takes for the
magnetic signal to travel from the brain to the scanner
Because blood flow changes when brain activity changes, which takes around 6 seconds, the magnetic signal being captured in fMRI changes when brain activity is delayed by this amount of time.
The approach of using functional magnetic resonance imaging (fMRI) to identify dynamic patterns of activity in the functioning human brain. Although fMRI is just a few decades old, the early findings that lead to it have completely changed the way that brain activity is studied. The magnetic characteristics of deoxyhemoglobin, as well as the physiological fact that blood flow rises more than oxygen consumption when local cerebral activity increases, provide a biophysical basis for the capacity to detect changes in brain activity. When cerebral activity rises, these processes lead to a slight increase in the local magnetic resonance signal, the blood oxygenation level dependent (BOLD) effect. This pattern of activation may be assessed using current methods with spatial and temporal resolutions of up to 1 mm3 and 1 s, respectively.
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What happens to gland cells during anaphase?
Chromosomes break at centromeres, and sister chromatids move to opposite ends of cell.
Anaphase is a division of the eukaryotic cell that involves separating the chromosomes to opposite poles of the cell.
The DNA variations intended for different cells, ensuring variability in population genetics when homologous pairs are separated during anaphase.
The third phase of meiosis is called anaphase I. It involves the movement of chromosomes from one meiotic cell to another through a microtubule apparatus known as the spindle network.
During anaphase, the chromosomes are transferred from one side of the cell to other. This process is known as a breakdown of microtubule network. It causes the fibbers of microtubules to shorten.
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is a term used to describe changes in the normal cycles of the earth's climate that are attributed to human activity. disturbances in the cycle are central to these changes. there is an imbalance between the amount of that is released into the atmosphere and the amount that is removed by natural processes like photosynthesis. much of the excess in the atmosphere, which results from activities like burning fossil fuels, is believed to dissolve in the ocean rather than accumulate in the atmosphere. what remains in the atmosphere, along with other gases, is responsible for a in global temperatures. , another term for the shift in global temperatures, occurs because of what is called , whereby increased concentrations of gases in the atmosphere absorb and radiate heat back to earth. global warming is contributing to , which is causing changes to many of the earth's ecosystems.
The term used to describe changes in the normal cycles of the Earth's global warming that are attributed to human activity is "climate change." Disturbances in the cycle are central to these atmosphere changes.
There is an imbalance between the amount of carbon dioxide that is released into the atmosphere and the amount that is removed by natural processes like photosynthesis. Much of the excess carbon dioxide in the atmosphere, which results from activities like burning fossil fuels, is believed to dissolve in the ocean rather than accumulate in the atmosphere. What remains in the atmosphere, along with other gases, is responsible for a rise in global temperatures. This is known as "global warming" and it occurs because of what is called "greenhouse effect," whereby increased concentrations of gases in the atmosphere absorb and radiate heat back to Earth. Global warming is contributing to "climate change" which is causing changes to many of the Earth's ecosystems.
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flower position, stem length, and seed shape are three characters that mendel studied. each is controlled by an independently assorting gene and has dominant and recessive expression as follows:
flower position, stem length, and seed shape are three characters that mendel studied. each is controlled by an independently assorting gene and has dominant and recessive expression as follows:
Character Dominant Recessive
Flower Position Axial (A) Terminal (a)
Stem Length Tall (T) Dwarf (t)
Seed Shape Round (R) Wrinkled (r)
Different genes independently separate from one another when reproductive cells develop, according to the Principle of Independent Assortment. When Gregor Mendel originally studied genetics in pea shops in 1865, he discovered the independent multifariousness of genes and the rates that go on with them. Mendel conducted trihybrid crosses, which are unions of organisms that vary in two traits. When he crossed different organisms, he set up that the particularity combinations in the get didn't inescapably correspond to the particularity combinations in the maternal organisms. He created the Principle of Independent multifariousness using the information he had. As of moment, we're apprehensive that in eukaryotes, meiosis is when this different collection of separate genes happens.
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Place the following in order from smallest to largest
Answer:
Tributary
River
River System
A tributary is the smallest followed by the river and the river system is the largest.
Explanation:
Tributary is a small stream of water that flows into a river. A river is a larger stream of water that flows into a lake, sea or another stream. A river system is a group of rivers that discharges water into a lake or a sea.
The main difference between a tributary and a river is that a river is a large stream that carries water from higher areas to lower areas that gets ended up in an ocean while a tributary is a small river that flows into a larger river.
The river system is a drainage basin or a watershed that consists of the river, it's tributaries and groundwater resources. River systems are areas of important biodiversity and are also a home to endangered wildlife.
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Put the sentences describing DNA replication in prokaryotes in chronological order, with the sentence describing the beginning of the process at the top.
The sentences that describe DNA replication in prokaryotes are in chronological order:
Regulаtory proteins bind to the stаrting point on the chromosome.Enzymes "unzip" the DNА molecule by breаking hydrogen bonds between bаse pаirs.Replicаtion stаrts from а single point аnd proceeds in two directions until the entire chromosome is copied.The two new chromosomes аre sepаrаted when the cell divides to form two new cells.DNА is the genetic mаteriаl thаt defines every cell. Before а cell duplicаtes аnd is divided into new dаughter cells through either mitosis or meiosis, biomolecules аnd orgаnelles must be copied to be distributed аmong the cells.
DNА, found within the nucleus, must be replicаted in order to ensure thаt eаch new cell receives the correct number of chromosomes. The process of DNА duplicаtion is cаlled DNА replicаtion. Replicаtion follows severаl steps thаt involve multiple proteins cаlled replicаtion enzymes аnd RNА. In eukаryotic cells, such аs аnimаl cells аnd plаnt cells, DNА replicаtion occurs in the S phаse of interphаse during the cell cycle. The process of DNА replicаtion is vitаl for cell growth, repаir, аnd reproduction in orgаnisms.
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Answer:
The order goes in the following:
Explanation:
Regulаtory proteins bind to the stаrting point on the chromosome.Enzymes "unzip" the DNА molecule by breаking hydrogen bonds between bаse pаirs.Replicаtion stаrts from а single point аnd proceeds in two directions until the entire chromosome is copied.The two new chromosomes аre sepаrаted when the cell divides to form two new cells.Two parents who are each known to be carriers of an autosomal recessive allele have four children. None of the children has the recessive condition. What is the probability that two or more of the children are carriers of the recessive allele?
The likelihood that one or more of the children is a carrier is equal to the sum of all probabilities minus the likelihood that none of the children is a carrier. The correct answer is 0.988.
Because both parents are carriers, they are heterozygous.
aa* aa —à AA, aa, aa
The likelihood of becoming Aa is 2/3. (because one is recessive)
The likelihood of not being a carrier is = 1/3.
The likelihood that one or more of the four offspring are carriers of the recessive gene (meaning at least one) is = 1 - (probability of none of the children is a carrier)
= 1 – (1/3)^4 = 0.988
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Annelids
Characteristics
Annelids are the most advanced type of worms are known as
segmented worms. The segmented structure of annelids help them
move and survive predators. They can live in saltwater, freshwater,
and damp soil. Most of them are scavengers and burrow into soil or
sand.
What is a common feature of
ALL of Phylum Annelida?
A have a closed-circulatory system
B. scavenge for food
C. have a segmented body plan
D. contain anti-coagulant factors
A common feature of all Phylum Annelida is : C.) have a segmented body plan.
What features do annelids possess?The term "annelida" also refers to segmented worms. It is distinguished by having a segmented body plan, which is a characteristic shared by all individuals in this phylum. Because of their more complicated and flexible bodies due to this segmentation, they can move around and fend off predators.
Some of them may survive in a variety of habitats, including freshwater, saltwater, and moist soil. However, the majority of them are scavengers that burrow into the ground or sand. Other traits, including having a closed circulatory system or anti-coagulant substances, can differ between species.
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one of the oldest known mammalian fossils belongs to a small furry species, hadrocodium wui, that lived 195 million years ago. for the following 100 million years, only a small number of groups of mammalian fossils are found in the fossil record. by 65 million years ago, the nonavian dinosaurs were extinct. by 55 million years ago, there were 130 mammal genera, including 4,000 different species that occupied a wide variety of habitats. Which of the following best describes the cause of the rapid increase in the number of mammalian species between 65 and 55 million years ago?
Hadrocodium woo, a little hairy animal that lived 195 million years ago, is the owner of one of the oldest mammalian remains ever discovered. Only a few tiny groups of mammalian fossils are establishing the fossil record for the next 100 million years. Dinosaurs from the Donovan Formation vanished 65 million years ago.
Early mammals were biologically diversified and experimented with gliding, swimming, burrowing, and climbing, according to the fossils. The findings are also beginning to shed light on the evolutionary roots of several of the important characteristics of Mammals,(brain) including breastfeeding, huge brains, and exceptionally acute senses.The majority of China's mammal fossils, which are incredibly detailed, were created when volcanoes buried the creatures in ash. Mammal fossils from the Mesozoic period (252 million to 66 million years ago) typically consist just of teeth and jaw fragments, while Chinese examples frequently include complete skeletons together with internal organs, skin, and fur. According to Meng, "We have a lot of detail to answer scientific questions." For instance, he is curious about the development of the mammalian ear.
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Organisms such as coagulase-negative Staphylococcus, Corynebacterium, and alpha streptococcus species are all found on the skin and represent normal skin flora. All of the following are functions of normal skin flora EXCEPT?
A. They provide substances that are toxic to other organisms
B. They inhibit growth of more harmful microorganisms
C. They provide a level immunity to protect against the formation of infections
D. They aid in the transmission of nosocomial infections
All of the following are functions of normal skin flora EXCEPT They aid in the transmission of nosocomial infections i.e. option(D)
Nosocomial infections, or infections acquired in a healthcare setting, are not often linked to the transmission of normal skin flora. Instead, healthy skin flora contributes to skin health by preventing the growth of harmful microbes, competing with them for nutrients and space, and creating enzymes and other compounds that can aid in the breakdown and removal of dead skin cells and other surface detritus.
Therefore, functions of normal skin flora EXCEPT They aid in the transmission of nosocomial infections i.e.option(D)
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in drosophila, gray body color (g) is dominant over ebony body color (g), while long wings (l) are dominant over vestigial wings (l). work the following crosses through the f2 generation, and determine the genotypic and phenotypic ratios for each generation. the cross we're using is gray, long x ebony, vestigial (both homozygous)
The cross being used is gray, long x ebony, vestigial (both homozygous).
F1 generation:
All offspring will be gray and long-winged (GgLl) because gray (G) and long wings (L) are dominant over ebony and vestigial wings.
F2 generation:
The genotypic ratio for the F2 generation will be 1GgLl : 2Ggl : 2Ggl : 1ggllThe phenotypic ratio for the F2 generation will be 3 gray, long-winged: 1 gray, vestigial-winged: 1 ebony, long-winged: 1 ebony, vestigial-wingedThe F1 generation will be all gray and long-winged because gray and long wings are dominant. The F2 generation will have a 3:1 ratio of gray, long-winged to gray, vestigial-winged, and a 1:1 ratio of ebony, long-winged to ebony, vestigial-winged.
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which of the following statements is most correct? (mito: mitochondria) the electron transport chain -
In chloroplasts, protons are pumped into the stroma in the direction of the thylakoid space by the electron transport chain.
Pyruvate is promoted into the Krebs cycle within the inner mitochondrial membrane when oxygen is present. Protons are removed during the Krebs cycle and then injected back into the intermembrane gap of the mitochondria against its gradient. Pumping protons (hydrogen ions) through the intermembrane gap is the fundamental goal of moving electrons along the electron transport chain. As a result, the cell preferentially permits hydrogen ions to re-enter the mitochondrial matrix, where it utilises the gradient created to produce ATP.
Consequently, a final proton pump is developed, which directly pumps two protons into the mitochondria through the matrix and cytochrome complex IV.
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For each scenario below, decide if it is describing a theory or a hypothesis and classify it accordingly. Hypothesis Theory Research has demonstrated that all living things have a common ancestor. Years of evidence have demonstrated that all living things are comprised of cells. Book Print ferences A scientist notices that a certain mold is Inhibiting bacterial growth and suggests that the mold is producing antibiotic substances A researcher notices that her plant has stopped growing and wonders if it could be because of a lack of sunlight These are plausible explanations for a single natural event These are accepted explanations for how the world works
A hypothesis in a logical setting is a testable assertion about the connection between at least two factors or a proposed clarification for some noticed peculiarity.
Straightforward speculation is something said to mirror the connection between precisely two factors. One autonomous and one ward. Consider the model, "Smoking is an unmistakable reason for the cellular breakdown in the lungs." The reliant variable, cellular breakdown in the lungs, is subject to the free factor, smoking.
Hypothesis expresses your expectations about what your exploration will find. It is a provisional solution to your exploration question that has not yet been tried. For some examination projects, you could need to compose a few speculations that address various parts of your exploration question.
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If subjected to sound frequencies of 25,000 to 100,000 cycles per second, which of the
following would be least affected?
A. a human being
B. a cheetah
C. a porpoise
D. a bat
E. a house cat.
Answer: D. a bat
Explanation:
A bat just picks up on the sound waves but does actualy hear stuff
D. A bat would be least affected by sound frequencies of 25,000 to 100,000 cycles per second. Bats use ultrasonic frequencies in their echolocation calls to navigate and locate prey, they have specialized ears and auditory systems that allow them to hear and process these high frequency sounds. While other animals like human, cheetah, porpoise and house cat would not be able to hear these ultrasonic frequencies and would not be affected by them.
What are your thoughts on the concept of citizen science, and what projects/activities from SciStarter caught your eye? Would you say you personally connect more with the idea of doing scientific research, doing citizen science, or none of the above? Why?
Citizen science is an innovative concept that involves the participation of members of the public in scientific research. This concept can be beneficial for both the public and the scientific community.
By involving the public in scientific research, citizen science can increase scientific literacy, foster a sense of community, and provide valuable data that would be difficult or impossible to obtain through traditional scientific methods.
Yes, I Would say that I personally connect more with the idea of doing scientific research, doing citizen science, as it will help to ring about safe research.
What is the citizen science?eBird: This project allows people to submit observations of birds they've seen and heard. These observations are then used to track bird populations, migration patterns, and distribution.
Project BudBurst: This project allows people to observe and record the timing of leafing, flowering, and fruiting of plants in their local area. This information is then used to study the effects of climate change on plant phenology.
In conclusion, citizen science can be an effective way to engage the public in scientific research and promote scientific literacy. It can also provide valuable data that would be difficult or impossible to obtain through traditional scientific methods.
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Which of the following reaction elements can be changed by an enzyme?
The condition of the atmosphere at a specific time and place is called _______
A ocean currents
b climate
C air currents
D weather
Need help ASAP
The condition of the atmosphere at a "given place and time" is called Weather.
Answer: Option D
Explanation:
Weather is characterized as the different environmental conditions which incorporate precipitation, temperature, wind, mugginess and other meteorological components, and so on in a district over a significant lot.
Weather of earth can be dictated by environment or elevation of an area. It can be influenced because of different elements which incorporate human exercises like consuming non-renewable energy source, cutting down timberland, neighborhood land highlights like mountains etc.
estimate area of endoplasmic reticulum when it is in rectancular form using a model for its structure
The endoplasmic reticulum (ER) is a complex and dynamic organelle found within eukaryotic cells. Its structure can vary depending on the cell type and the functions it is performing.
In a rectangular model, the ER is composed of a series of flattened, stacked cisternae that form a network of flattened tubules and vesicles. To estimate the area of the ER in this model, one would need to know the length and width of the cisternae, as well as the number of cisternae present.
The area of a rectangle can be calculated using the formula:
length x widthTherefore, if the length and width of each cisterna are known, the total area of the ER can be calculated by multiplying the area of one cisterna by the number of cisternae present.
The structure of the ER can be more complex than a simple rectangle, and its size can also vary greatly depending on the cell type and stage of development. Also, there are different types of ER, like rough endoplasmic reticulum (RER) and smooth endoplasmic reticulum (SER), that have different structures.
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Which of the following characteristics of a red blood cell increases its ability to carry oxygen to the tissues?
1) Lacking mitochondria, RBCs rely exclusively on anaerobic fermentation to produce ATP.
2) The cytoplasm of an RBC consists mainly of a 33% solution of hemoglobin.
3) RBCs lose nearly all organelles during their development.
4) The cytoplasm also contains an enzyme, carbonic anhydrase.
5) Lacking a nucleus and DNA, RBCs also are incapable of protein synthesis and mitosis.
RBCs lack mitochondria, hence they can only create ATP by anaerobic fermentation.
Red blood cells were designed to carry oxygen. They feature a bi-concave form that optimizes their contact area to absorb oxygen, a thin membrane that allows gases to readily permeate through it, are small & flexible so they may fit through small vessels, and contain haemoglobin, which binds to oxygen. Red blood cells can bend and stretch, they can cling to certain other cells, and they can communicate with immune cells. Their membrane has a variety of effects on this. The composition of the membrane has a significant impact on these functions. The protein that transports oxygen is called haemoglobin, and it is almost exclusively located in red blood cells (RBCs) rather than dispersed in plasma. Relative to a flat disc of the same size, the cell's biconcave shape has a larger surface area.
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The cytoplasm of red blood cells RBC mainly consists of a 33% solution of hemoglobin these features increase the capacity to carry oxygen to tissues. Here option 2 is the correct answer.
Hemoglobin is an iron-containing protein that binds to oxygen and gives red blood cells their characteristic red color.
The high concentration of hemoglobin in the cytoplasm of red blood cells allows them to carry a large amount of oxygen, which they can then transport to the tissues throughout the body. This characteristic is key to the red blood cells' ability to carry oxygen.
All the other options mentioned are correct as well, but they don't have a direct relationship with the ability of red blood cells to carry oxygen. Lacking mitochondria, RBCs rely exclusively on anaerobic fermentation to produce ATP, and RBCs lose nearly all organelles during their development.
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A scientist discovers a putative new life form and notes that the creature's body is bilaterally symmetrical and consequently satisfies the criteria for defining life in which of the following categories?
(a) Evolution.
(b) Growth and development.
(c) Order.
(d) None, symmetry is not a basic characteristic of life.
The correct option is D ; None, symmetry is not a basic characteristic of life.
When an animal's body plan can be divided along a line that separates the animal's body into nearly equal right and left halves, it is said to have bilateral symmetry.
Most animals have a line of symmetry that divides their body into left and right sides, as well as a "head" and "tail" in addition to a top and bottom.
Flatworms, common worms ("ribbon worms"), clams, snails, octopuses, crustaceans, insects, spiders, brachiopods, sea stars, sea urchins, and vertebrates are examples of species with bilateral symmetry. An animal's symmetry is often appropriate for its lifestyle.
Learn more about to bilateral symmetry.
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Which describes the gyres in the northern hemisphere
Answer:
The gyres in the northern hemisphere describe the large systems of rotating ocean currents that flow clockwise in the Atlantic and counterclockwise in the Pacific and Indian Oceans.