Answer: zebrafish
Explanation:
Since the 1960s, the zebrafish has become increasingly important to scientific research. It has many characteristics that make it a valuable model for studying human genetics and disease.
exposing a protein to acid or heat will alter the three-dimensional structure of the protein. this process is called multiple choice transcription. translation. deamination. denaturation.
Exposing a protein to acid or heat will alter the three-dimensional structure of the protein. This process is called denaturation
What is Denaturation?
It is one of the phenomenons that results in the disturbance of stability and structure of the proteinThe stability and structure of protein depends on physical and chemical conditions.
Temperature and pH affect the stability to a great extent.Due to changes in temperature, pH or other chemical activities, hydrogen bonds present in the proteins get disturbed. This results in unfolding of globular proteins and uncoiling of the helix structure.The uncoiling of helix structure affects chemistry of proteins and they lose their biological activity. This phenomenon of losing their activity and uncoiling of helix structure due to physical or chemical changes is called denaturation of proteins.During denaturation of proteins, the secondary and tertiary structures get destroyed and only primary structure is retained.Learn more about Denaturation at Brainly.com https://brainly.com/question/12323414
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. the medium ground finch (geospiza fortis) and the cactus finch (geospiza scandens) are similar in size and appearance. a. which physical trait varies the most between these two species? b. the medium ground finch and the cactus finch are adapted to consume different types of foods. can you think of a situation in which the medium ground finches would have a survival advantage over the cactus finches? a disadvantage?
Cactus finches have longer beaks than medium ground finches, which is the physical difference between these two species that differs the most.
What species of ground finch are associated to huge cacti?Taxonomy. Darwin's finches, a group of closely related birds that developed on the Galápagos Islands, includes the Espanola cactus finch. The Tiaras grassquits, which may be found in South America and the Caribbean, are linked to the group.
What became of the medium-sized finches?Due of low population sizes, there has been an inbreeding depression in the medium ground finch population. When fitness declines as a result of people mating with genetic relatives, it is known as inbreeding depression. Normal outcomes include a decrease in heterozygosity and a loss of genetic diversity.
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from all three sites surveyed what was the total number of tuskless elephants killed
In the early 2000s, more than 2,500 elephants which is reduced to 200 tuskless elephants.
What is the percentage of Tuskless elephants?Whereas the usual level of tusklessness in elephant residents is somewhere between 3 percent and 4 percent, on the report of a Ugandan report, a 1989 survey of Queen Elizabeth National Park discloses tusklessness in the elephant population to be between 9 percent and 25 percent. This find proposes the mutation for tusklessness may kill male elephants, per the New York Times. The team deliberated that 18.5 percent of female elephants did not have tusks before the war began. After the war, 33 percent of 91 female elephants born were naturally tuskless, per Nature.
So we can conclude that In well-protected elephant natives, tusklessness can be as low as 2 percent. Today, half of Gorongosa's females are tuskless.
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how can we check if proteins have been successfully transferred from the polyacrylamide gel to nitrocellulose?
It will be challenging for the protein to go from the polyacrylamide gel to the nitrocellulose membrane if it is not completely denatured. Larger proteins transmit less than smaller proteins, which explains this.
Denaturing the protein by using the appropriate amount of the detergent SDS (Sodium Dodecyl Sulphate), which enables the transfer of the protein from the polyacrylamide gel to the nitrocellulose membrane.
We need to add antibodies and run a western blot to see if the transfer went through properly.
What is nitrocellulose?Nucleic acid and protein detection are frequently used in research and diagnostic applications, and nitrocellulose membranes are one of the most significant and ancient cellulose derivatives. Only a few studies, though, have looked into whether they can serve as scaffolds for cell growth.
Based on mixed cellulose esters (MCE), die cut nitrocellulose membrane filters can withstand bases, weak acids, non-polar liquids, and hydrocarbons. They offer higher protein binding than CA membrane filters alone and are made of cellulose nitrate and cellulose acetate (CA).
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What exactly is a Conceptual Model and why is it used?
Conceptual models are abstract, psychological representations of how tasks should be carried out
which of these is a feature of most shield volcanoes? broad base, steep sides, violent eruptions, or thick lava?
Answer: Broad Base
Explanation:
the dermis is composed largely of multiple choice question. a) stratified columnar epithelium. b) dense regular connective tissue. c) stratified squamous epithelium. d) dense irregular connective tissue.
The dermis is composed largely of multiple choice question - stratified squamous epithelium.
There are three basic layers to the skin. The outer, avascular layer known as the epidermis is primarily made up of keratinocytes and keratinocyte remnants. The intermediate layer known as the dermis is home to the skin's blood vessels, nerves, and other supporting systems. Of the three layers, the hypodermis is the deepest.
What is Stratified columnar epithelium ?Column-shaped cells are organized in numerous layers to form the uncommon epithelial tissue known as stratified columnar epithelium. It is located in the male urethra, anus, pharynx, and conjunctiva.
ciliated columnar epithelium that is stratified. The lining of the foetal oesophagus is an example of an epithelium with many layers, the deeper cells of which are polyhedral in shape, and the surface cells of which are columnar with motile cilia.
What is Dense regular connective tissue ?Type I collagen fibers are the major component of dense regular connective tissue. It can be found in the body's ligaments, tendons, and aponeuroses, which all need a lot of tensile strength. The collagen fibers are aligned parallel to one another and closely spaced together.
What is stratified squamous epithelium ?Stratified squamous epithelium: This kind of epithelium typically serves as a barrier against water loss and/or the invasion of germs into the underlying tissue. Your skin's epidermis, or top layer, is made up of stratified squamous epithelial cells.
What is dense irregular connective tissue ?A form of dense connective tissue called dense irregular connective tissue lacks parallel bundles of extracellular fibers, particularly collagen fibers (as opposed to the dense regular connective tissue whose collagen fibers are arranged in a parallel fashion).
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a change in bowel habits prompts a 53-year-old woman to see her physician. on physical examination there are no lesions noted on digital rectal examination, but her stool is positive for occult blood. a colonoscopy is performed and reveals a 6 cm friable mass inthe cecum. a biopsy of this mass is performed and microscopic examination shows a moderately differentiated adenocarcinoma. after resection of the tumor, the oncologist begins treatment with 5-fluorouracil (5-fu) combined with other chemotherapeutic agents. 5-fu not only kills tumor cells but also rapidly growing cells of the immune system and intestine. what is the mechanism by which 5-fu selectively kills fast growing cells?
The mechanism by which 5-fu selectively kills fast growing cells is K-RAS mutation in the neoplastic cells.
An abnormal mass of tissue that paperwork whilst cells grow and divide extra than they need to or do no longer die once they have to. Tumors may be benign (not most cancers) or malignant (cancer). Benign tumors may also grow big however do not spread into, or invade, close by tissues or different parts of the frame.
There are three primary styles of tumor:
1) Benign: these tumors are not cancerous. They do no longer invade close by tissue or spread to other parts of the frame. ...
2) Premalignant: In these tumors, the cells aren't but cancerous, however they could doubtlessly end up malignant.
3) Malignant: Malignant tumors are cancerous.
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during chordate evolution, what is the sequence (from earliest to most recent) in which the following structures arose? 1. four limbs with digits 2. notochord 3. true bone 4. lungs or lung derivatives 5. amniotic egg
During chordate evolution the sequence in which the structures arose are paired fins, jaws, limbs/fins with muscle, amniotic egg, and placenta.
An animal belonging to the phylum Chordata is referred to as a chordate, and all chordates have 5 synapomorphies—or predominant characteristics—that set them other than all different species at a while in the course of their larval or grownup stages.
The notochord, dorsal hole nerve cord, endostyle or thyroid, pharyngeal slits, and publish tail are amongst those 5 synapomorphies. The first of those synapomorphies, the notochord, that's important to chordate motion and structure, is in which the call chordate originates. Chordates additionally have a coelom, a circulatory system, are bilaterally symmetric, and show metameric segmentation.
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Reproduction 1:Question 1
A mutation that occurs in an organism that reproduces sexually
will most likely affect the traits of the offspring if the mutation
A mutation that occurs in an organism that reproduces sexually will most likely affect the traits of the offspring if the mutation alters the DNA in a gamete of a parent.
Any cell's DNA can be altered by other genetic flaws, ultraviolet radiation, environmental exposure to specific chemicals, replication errors, and other genetic insults.
It is possible for an organism's progeny to inherit a mutation if it develops in a germ-line cell (a cell that will develop into gametes, such as egg or sperm) or in a cell that will produce them. Accordingly, the mutation will exist in each and every cell of the growing embryo.
Somatic mutations differ from germ-line mutations in that they take place in cells from different parts of an organism's body.
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Look at the DNA samples from Cytochrome b shown above. What do you notice about the sequences for each population?
Answer:
Explanation:
they have lines.
Mark all of the terms that relate to the structure of RNA.
a
thymine
b
double helix
c
ribonucleic acid
d
adenine
e
cytosine
f
single helix
g
guanine
h
uracil
i
hydrogen bonds
j
deoxyribonucleic acid
not all individuals are identical in what? A. ecosystem, B. community, C. Organism, D. Populations
According to the research, the correct answer is option B. In a community not all individuals are identical.
What is a community?It is a group of populations of different individuals, who live in the same place or biotope in which they find the environmental circumstances to guarantee their survival.
In this sense, these organisms of different species coexist and interrelate in a geographical region, forming a trophic chain and competing for the prolongation of their species.
Therefore, we can conclude that according to the research, a community is established by the set of different individuals that live in the same habitat, thus the correct answer is option B.
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what was the purpose of the water-filled transperent plastic tank in the chollera photosyntegis experiments?
The chollera photosynthesis system's water-filled translucent plastic tank. A water tank is placed in the path of the light to dissipate heat.
How are plastics made?Through the polymerization and polycondensation process, mineral wealth like cellulose, coal, nat gas, salt, and petroleum products are used to create polymers. Plastics are created using natural, organic materials including cotton, coal, nat gas, salt, or, of course, crude oil.
What does the word "plastic" actually mean?A group of materials known as plastics can be moulded when they're soft and afterwards hardened to keep the intended shape. These materials may be created artificially or organically. Plastics are made of polymers. A polymer is a substance made up of several repeating units.
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in a diploid individual, one chromosome carries f and b genes, and the homologous chromosome carries different forms (alleles) of these same genes, f and b. see the image below for an illustration of the diploid, the original cell at the start of meiosis. if there is no crossover of the non-sister chromatids during the early phases of meiosis, the genotypes of the resulting gametes will be:
The resulting genotype would be fB, fB, Fb, Fb if no crossing over of non-sister chromatids occurs during the early stages of meiosis
Homologous recombination is the genetic outcome of a physical exchange between two aligned identical DNA regions on two distinct chromosomes or on the same chromosome (HR). Numerous markers surround the exchange region, and HR is present on the majority of homologous chromosomes.
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suppose prey move out of an area at a rate proportional to the number of predators in the area. how would you modify these systems to take this into account?
If prey moves out of an area at a rate proportional to the number of predators in the area, then the number of prey and predator would be equal leading to static growth.
Predators are living creatures that chase other living beings, called prey, in arrange to nourish and subsist through a vitality exchange within the shape of nourishment. It is an interaction where one life form is profited, whereas the other included is hurt.
The predator can expend prey totally, or as it were take a portion of it, even though it causes significant damage.
Prey moreover have versatile characteristics to guard themselves against predators. Camouflage capacity: much appreciated to which they can go unnoticed in their environment.
The colors can moreover serve as an alarm, with distinctive colors or designs that demonstrate to predators that they may be in peril in case they are hurt.
If you're inquisitive to know more animals that camouflage themselves, here you'll be able to discover more than 20 creatures that camouflage themselves.
Without predators, populace x develops over time without bounds. But with predators, it'll diminish relative to the number of predators y increased by the number of prey x, since of the number of intelligent between the two species.
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a horticulturalist wants to produce geraniums with specific characteristics. she knows that the trait of red flowers is governed by the allele r(rr and rr) and the trait of white flowers is governed by the allele r(rr). the horticulturalist plans to cross a geranium that is true-breeding for red flowers with a geranium that is true-breeding for white flowers. which punnett square best describes this cross?
The one that best describes the Punnett square of this cross is:
R R
r Rr Rr
r Rr Rr
Geraniums that breed for red flowers mean that the allele trait is Homozygous dominant which is denoted by the letter RR. And geraniums that reproduce for white flowers mean that the allele is homozygous recessive, denoted by the letter rr.
Homozygous dominant genes are a combination of two dominant genes from male sex cells and female sex cells. Homozygous dominant genes are symbolized by two capital letters, such as AA and RR.
A recessive homozygous gene is the result of the combination of two recessive genes from two sex cells. The homozygous recessive gene symbol is two lowercase letters, for example, aa and rr.
Heterozygous genes are genes that have different pairs of alleles so that one is dominant and the other is recessive, so it is written with a combination of uppercase and lowercase letters, such as Rr.
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dnp is a toxin that destroys the proton gradient created by the electron transport chain. where in the cell does dnp act? a. plasma membrane b. mitochondrial matrix c. inner mitochondrial membrane d. nuclear membrane
The toxin dnp degrades the proton gradient created by the electron transport chain. The location of dnp in the cell is. mitochondrial inner membrane
Mitochondria are double-membraned organelles with phospholipid bilayers and proteins as inner and outer membranes. The inner mitochondrial membrane (IMM) is of particular interest because it houses the electron transport chain and ATP synthase. As a result, the inner mitochondrial membrane serves as a functional barrier between the cytosol and the matrix, preserving the proton gradient that drives oxidative phosphorylation. The mitochondrial inner membrane, like the cell membrane, is primarily composed of a phospholipid bilayer. Various proteins embedded in this bilayer serve to transport electrons.
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certain bacteria and viruses are more likely to be spread by fomites than other species of microbes. research pathogens that are commonly transmitted by fomites and provide one bacteria and one virus example. describe how fomite-spread pathogens gain access to the body and the most effective methods for preventing transmission.
Fomites can become infected with a plague through direct contact with bodily fluids, soiled hands, talking, sneezing, coughing, or vomiting, or by being exposed to an airborne virus.
Indirect entails a private coming into contact with a contaminated object. This frequently happens as a result of contaminated objects or environments from dirty hands. This surface still has the microorganism thereon, expecting the subsequent person to touch it and pick it up.
What about bacteria?Some bacteria aid within the digestion of food, assist the body produce necessary vitamins, and eliminate disease-causing cells.Additionally, bacteria are employed to form nutritious foods like yogurt and cheese. But contagious microorganisms offer you a disease.Within your body, they multiply rapidly.Bacteria can feed a spread of ways.The energy that heterotrophic bacteria, often mentioned as heterotrophs, produce comes from eating organic carbon.Most of them take up decaying organic matter like dead meat.These parasitic microorganisms can either aid or harm their host.Actually, the event of germs is simply delayed.Cooking food at 165 degrees or above is the sole technique to destroy microorganisms using temperature.Bacteria also die in extremely acidic environments, such as pickle juice.Bacteria must be killed using water that's 140 degrees Fahrenheit or hotter.This system is used by most restaurants to kill bacteria on food and cooking equipment and to clean surfaces.Bacteria can also be killed by chlorine.Medicines mentioned as antibiotics are used to treat bacterial infections in both humans and animals.Learn more about bacteria here:
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what was one step congress took during the covid-19 pandemic to lessen the blow to those impacted?
Many steps were taken by congress during the covid-19 pandemic to lessen the blow to those impacted. COVID-19 pandemic has severe and devastating impacts on American society, economy and health sectors compounding public as well as social crisis & economic burdens.
In 2020, COVID-19 pandemic spread worldwide bringing national and global emergency and crisis. However, American were severely effected by the pandemic.
Congress took some immediate and sensible measures to mitigate the effects of the pandemic and also made certain efforts to reduce the impending crisis.
However, the congress provided aid to the social, local, tribal and state governments. The steps take by congress include direct payments to effected individuals, tax incentives, increased benefits for unemployed people with $300 weekly.
Furthermore, 174 billion dollar funds were allocated for public health measures and 170 billion dollar for education at all levels.
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while you and your classmate are studying for your biological anthropology midterm, your classmate tells you that the fossil of lucy, a famous australopithecine specimen that dates to about 3.2 mya, was dated based on carbon 14 analysis. why is this incorrect?
Studying the evolution, diversity, and adaptation of people and their extant and fossilized relatives is known as biological anthropology.
What is biological anthropology midterm ?By examining biology (particularly the skeleton), evolutionary theory, inheritance, the fossil record, and contemporary primates, biological anthropology looks into the biological evolution and variation of both human and nonhuman primates. It examines how behavior, ecology, and biology are related to one another.
Biologists study how people adapt to various surroundings, how biological and cultural processes influence growth, development, and behavior, and what factors contribute to illness and early mortality. They are also fascinated with the biological beginnings, evolution, and variation of humans.
What is Fossil ?Any surviving remains, impression, or evidence of a once-living thing from a previous geological epoch is referred to as a fossil. Examples include fossilized bones, shells, exoskeletons, animal or microbe imprints in stone, amber-preserved artifacts, hair, petrified wood, oil, coal, and DNA traces.
If a specimen is more than 10,000 years old, it is typically regarded as a fossil. The oldest fossils date back between 3.48 and 4.1 billion years.
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Social sciences are
a.
the observable facts or events that involve human society.
b.
how people relate to one another and influence each other’s behavior.
c.
the hidden meanings behind human actions.
d.
the disciplines that study human social behavior or institutions and functions of human society in a scientific manner.
Social sciences are the disciplines that study human social behavior or institutions and functions of human society in a scientific manner.
what are the application studying social science ?Social science is the field of study where the paragliding word concerned with occurrences created by humans and opposed to traditional sciences.
under this sciences anthropology, evolutionary psychology is often categorized fall under that same group.
It can be used to involve in engineering field as either a decision science or other specialty with a technical bent.
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during exercise, the blood flow to the active skeletal muscles is increased by autoregulation. how does this work? what other controls on blood flow operate?
During exercise the skeletal muscles require more ATP which in turn requires more oxygen. This autoregulation is mediated by the cerebral resistance which causes dilation of arteries. When the demand of excessive oxygen is reduced, neurotransmitters are released that constrict the blood vessels.
Cerebral resistance is the relation between cerebral perfusion pressure and CBF. It functions to mediate a normal blood flow rate to any organ. If the demand of oxygen is more at any organs, it facilitates the dilation of arteries so that the blood flow rate remains nearly constant.
Neurotransmitters are the chemicals that carry the chemical signals from one neuron to another. Thus, they act as messengers.
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explain how erosion and deposition of a river's material over time, as the water flows down through, made the old stream look the way it does.
Erosion and deposition occurs by slow flowing rivers creates broad floodplains and meanders.
How do erosion and deposition occur?Rivers and bourn deposit sediment where the speed of the water current decreases. In rivers, toppling occurs along the inside bank of the river bend. This "area" is where water flows slower while erosion happens along the outside bank of the bend, where the water flows a lot faster. Most river erosion happens close to the mouth of a river. On a river bend, the longest sharp side has slower moving water. Here deposits build up. On the narrowest sharpest side of the curve, there is faster-moving water so this side tends to crumble away mostly.
So we can conclude that land use and stream oversight can also trigger erosion responses.
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A bird species that lives in an environment with constant climate and food resources is most likely to show an evolutionary pattern of.
A bird species that lives in an environment with constant climate and food resources is most likely to show an evolutionary pattern of gradual speciation.
In the field of biology, gradual speciation can be described as the evolutionary process by which changes in a species occur in small steps over a long period of time.
A bird species that have a constant food supply and a constant climate does not need to adapt to any changes in the environment as its requirements are constant. Such species will not change rapidly due to natural selection. Any change in these bird species will be a gradual one occurring over a long period of time.
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Which term best describes the smallest function unit of life?
- Atom
- Cell
-Tissue
-Organ
which type of chromosome mutation increases the amount of genetic material? a) deletion b) duplication c) inversion d) translocation e) transversion
Duplication is the chromosome mutation increases the amount of genetic material.
Duplication in the context of genomics refers to a type of mutation that produces one or more copies of a segment of DNA (which can be as small as a few bases to as large as a large chromosomal region). Duplication occurs in all organisms.
Duplications can arise from uneven crossovers that occur during meiosis between misaligned homologous chromosomes. The products of this recombination are duplications and mutual deletions at the exchange sites.
Chromosomal mutations are mutations involving long stretches of DNA. These mutations may include deletions, insertions, inversions, or translocations of DNA stretches or segments. In some cases, the deleted pieces attach to other chromosomes, destroying both the chromosome that lost the DNA and the one that gained it.
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striated muscles appear striated or banded under a microscope. striated muscle fibers include which muscle types? select all that apply. smooth muscle cells skeletal muscle cells muscle fibers that close the shells of clams cardiac muscle cells
Striated muscle fibers include the skeletal and cardiac muscle cells.
What are skeletal and cardiac muscles?
These skeletal muscles make up 30-40% of our complete body mass. These muscles are the ones which connect to bones through tendons, allowing us a wide range of mobility and functions. Skeletal muscles are voluntary muscles; this means we control how they work.
The cardiac muscles are specific to the heart. The thick middle layer of heart is made up of cardiac muscle. It performs rhythmic contractions, which allows the heart to pump blood. Pumping of blood is the most important job of the cardiac muscle, after which flows into the circulatory system.
Hence, striated muscle fibers have both cardiac and skeletal muscles.
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when you send electrical impulses to one of your muscles, there is a certain level of stimulus where the muscle will first show a twitch. why don't you see a twitch before this?
A twitch occurs when one muscle fiber contracts in response to a command stimulus by the nervous system.
The time interval between the activation of a motor neuron and contraction of muscle is called the lag phase. In the duration of lag phase an action potential travels to the end of motor neuron .
This action potential release of acetylcholine and depolarization of the motor end plate. Muscle twitch has three phase latent period, a contraction phase, and a relaxation phase. A classified muscle response allows alteration in muscle tension. Twitches and spasms can be warning signs which shows the nerves that control your muscles.
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When a researcher examines the consistency of data collected in a study, the researcher is considering which of the following characteristics?
A. reliability
B. validity
C. standard deviation
D. mode
