Answer:
The correct answer is C) a virus.Explanation:
Polymerase chain reaction (PCR) is a laboratory technique used to amplify specific DNA sequences. The PCR process involves several key components, including a thermocycler, DNA primers, and a DNA polymerase. However, a virus is not typically used as part of the PCR process.
The thermocycler is used to control the temperature of the reaction mixture, which allows for the denaturation (separation) of double-stranded DNA, annealing of the DNA primers to the single-stranded DNA template, and extension of the primers by the DNA polymerase.
The DNA primers are short pieces of DNA that are complementary to the target DNA sequence and provide a starting point for DNA polymerase to extend and copy the DNA sequence.
The DNA polymerase is the enzyme responsible for adding nucleotides to the growing DNA chain during PCR.
In summary, a virus is not used as part of the process of polymerase chain reaction, while a thermocycler, DNA primers, and a DNA polymerase are all essential components.
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Answer options:
a. Because foxes are smaller than jackals, gray wolves are less closely related to pampas foxes.
b. Given how little its DNA has changed, the golden jackal was the gray wolf's most recent ancestor.
c. Given that their DNA sequences are more similar, gray wolves and golden jackals are more closely related.
d. Because their DNA sequences differ greatly, scientists believe that the pampas fox was the gray wolves' earliest ancestor.
what waste product is produced in the krebs cycle?
Answer: Carbon Dioxide
Explanation:
The product of this reaction is a two-carbon molecule called acetyl-CoA. The third carbon from pyruvic acid combines with oxygen to form carbon dioxide, which is released as a waste product
__________ are solid solutions of two or more solids.
A.
Meniscus
B.
Alloys
C.
Mixtures
D.
Suspensions
Answer:
B. Alloys
Explanation: An alloy is a mixture of chemical elements of which at least one is a metal. For example, brass is an alloy of two metals: copper and zinc. Steel is an alloy of a metallic element (iron) and a small amount — up to 2% — of a non-metallic element (carbon).
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What are the three components of a nucleotide? (HINT: What were the three components used in putting the model together? Remember that Adenine, Guanine, Cytosine, and Thymine are all Nitrogen Bases!
Answer:
monkeys
Explanation:
monkeys can flyy
The diagram shows a stage in the water cycle.
What process is occurring at A in the diagram?
Question 2 options:
Water is being absorbed through roots of plants
Water is being released from plants through transpiration
Water is condensing on the surface of plant leaves
Water is evaporating from the ground under plants
Answer:
D, Water is evaporating from the ground under plants
Explanation:
As for short reasoning, the arrow is pointing up into the clouds and during the water cycle for water to turn into clouds it has to evaporate.
If you did not get what I said, please look at the diagram below,
When adjusted for inflation, cattle sell for _____ price they sold for during:
Please choose the correct answer from the following choices, and then select the submit answer button.
Answer choices
roughly the same; World War II.
roughly the same; the Great Depression.
less than the; the Civil War.
less than the; the Green Revolution.
Lower than the American Civil War cattle are now sold for less than they were during the Civil War after accounting for inflation.
What kind of inflation predicts that if the cost of a production factor rises, so will the cost of goods?Production costs rise as a result of rising domestic or foreign input prices. Firms often produce less output and increase the prices of their goods and services as a result of rising production costs per unit of output.
Which form of inflation is brought about and kept alive by an excessive overall demand for goods and services?Demand-pull inflation explains price increases as the outcome of a greater overall demand that outpaces supply in an economy.
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which phylogenetic tree best represents the information in the chart
A phylogenetic tree that best represents tabular information is a cladogram.
Which phylogenetic tree best represents the information in the table?A cladogram is a cladogram that shows the evolutionary relationships between different species. In this case, four amino acids can be represented by four branches on the cladogram. Each branch can represent a different species, with four amino acids serving as nodes along the branch.A phylogenetic tree can be constructed such that the amino acids of the nodes closest to the root (base of the tree) are shared by all three of her species. This indicates that these are the most primitive amino acids and were present in the common ancestor of all three species. As the branches recede from the root, they represent amino acids unique to each species.This suggests that these amino acids evolved in the species after splitting from a common ancestor.This cladogram helps scientists distinguish between closely related and distantly related species. For example, two species are closely related if they share the same amino acid at a particular node in the cladogram. If two species have different amino acids at the same node, they are more distantly related. This family tree is a visual representation of the evolutionary relationships between different species based on the amino acids they contain.For more information on phylogenetic tree kindly visit to
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Complete question : the following data shows four amino acids found across three species. which phylogenetic tree best represents the information in the chart?
Wildebeests: A Keystone Species Use the data provided to answer the question below in CER format. Make sure to use at least two pieces of evidence to claim and provide reasoning. FIRE! Fire is actually an important component of savanna ecosystems. Fire kills young trees and seedlings, reducing the number of big adult trees that grow over time. Since trees compete with grasses for light and soil moisture, fire actually helps the grasses and keeps the savannas open. Dr. Rico Holdo, a professor at the University of Missouri, and his colleagues modeled and wrote about the interactions of fire, rain, grasses, trees, and the various animals in the Serengeti. The interactions get complicated quickly, but I’ll try to give you a run-down of how they see fire acting in this ecosystem. First, as I’ve mentioned, fire suppresses trees and encourages grasses. If you have both fire and rain, but no animals, then something interesting happens: the rain encourages the trees, but it encourages the grasses, too. As the grasses get taller, there is more fuel for fire, and the fires become more widespread and more damaging. These fiercer fires really hurt the trees – in fact, the damage from fires (because of more rain) is more important than the extra boost the trees get directly from the rain. So more rain actually means fewer trees. With me so far? We’re now going to throw animals into the mix – well, at least some of the animals. Let’s talk about the grazers. The grazers eat the grass, and this reduces the fuel available to fire. If you have a lot of grazers, like we do in the Serengeti, the grass height is reduced a lot. That means fewer fires and that rain once again helps the trees. Further, many of the grazers are migratory and move around the landscape a lot. They don’t eat the savanna grasses in a neat, tidy, organized way. Instead, they create a patchy mosaic of grass heights, and with those different grass heights come different susceptibility of patches of grass to burn. With rain and fire and grazers, we now have a landscape of grasses of different lengths, patchy fires, and some areas dense with trees and some areas with fewer trees. All that variation means more diversity – more diversity of the grasses, plants, and trees, and more diversity of the animals that rely on them. All that diversity is due, in part, to fire. A Keystone species is a plant or animal that plays an important and unique role in how the ecosystem functions without the key stone species to ecosystem would be very different. One scientist identified Keystone specie it to look as how changes to their abundance (number ) affect other organisms. Often, there are many indirect effects of changes to ecosystems. Claim The wildebeest in the Serengeti are a keystone species. What evidence supports this claim? (Make sure to provide reasoning)
The evidence which supports this claim is that wildebeest grazing habits help reduce grass height and prevent fire spread.
What reasons are behind wildebeest in the Serengeti?Evidence 1: Grazing habits of wildebeest help reduce grass height and prevent the spread of fires. As mentioned in the article, grazers like wildebeest eat the grass and reduce the fuel available for fires, which prevents fires from spreading and damaging the trees.
Evidence 2: Migration patterns of wildebeest create a patchy mosaic of grass heights that affect the susceptibility of grass patches to burn. The article states that wildebeest are migratory and create a patchy mosaic of grass heights. This means that some areas of the savanna are dense with trees, while others have fewer trees.
These wildebeest are a keystone species in the Serengeti because of their grazing habits and migration patterns, which help to maintain a diverse ecosystem. Without wildebeest, the grass height would increase, leading to more frequent and more damaging fires. This would negatively impact the trees and reduce the diversity of the ecosystem.
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Some membrane proteins use energy to increase the concentration of
hydrogen ions on one side of the membrane. By which type of transport are
the hydrogen ions able to become more concentrated?
• A. Facilitated diffusion
• B. Exocytosis
• C. Active transport
• D. Osmosis
Answer:
the correct answer is option C, active transport.
Explanation:
8. Metamorphic rocks are created through a change in the rock's original structure.
A. What are three types of change that occur in the process of metamorphism? (3 points)
B. What happens to the rock structure during each of type of change? (6 points)
A. Three types of change that occur in the process of metamorphism are:
RecrystallizationNeometamorphismDeformationWhat are the changes that occur in the rock structure?B. The changes that occur in the rock structure during each type of metamorphism are:
Recrystallization: This involves the growth of new crystals within the rock, while retaining the same mineral composition. During this process, the original crystal structure may be destroyed, and new crystals may form in a more tightly packed, interlocking arrangement. This type of metamorphism is common in sedimentary rocks, such as limestone, where the original mineral grains may be broken down and replaced by new crystals of calcite.
Neometamorphism: This involves the formation of new minerals from the original minerals in the rock. The temperature and pressure conditions during this process may be high enough to break down the original minerals and form new ones. This type of metamorphism is common in rocks that have been subjected to regional metamorphism, such as schist.
Deformation: This involves the physical alteration of the rock due to stress and pressure. The rock may be folded, faulted, or sheared, leading to a change in its shape and structure. During this process, the original mineral composition and texture of the rock may be preserved, but its physical structure will be altered. This type of metamorphism is common in rocks that have been subjected to intense tectonic forces, such as foliated metamorphic rocks like gneiss.
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what is intersectionality?
Answer:
the interconnected nature of social categorizations such as race, class, and gender as they apply to a given individual or group, regarded as creating overlapping and interdependent systems of discrimination or disadvantage.
Explanation:
Which one of the following has the highest food conversion ratio?
Answer choices
beef
pork
eggs
chicken
The a concise and accurate answer would be: Chicken has the highest food conversion ratio.
When answering questions on Brainly, it is important to always be factually accurate, professional, and friendly. You should also be concise and avoid providing extraneous amounts of detail.
Additionally, you should not ignore any typos or irrelevant parts of the question. Your answer should address the specific question being asked.
In this case, the question is "Which one of the following has the highest food conversion ratio?" and the answer is "chicken."
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During June, the northern hemisphere experiences summer and the southern hemisphere experiences winter. During
December, the northern hemisphere experiences winter and the southern hemisphere experiences summer.
Why do the two hemispheres experience opposite seasons at the same time?
A) Earth is closer to the Sun during June and farther from the Sun during December.
(B The equator receives more sunlight than the northern and southern hemispheres.
C) The tilt of the axis causes the two hemispheres to receive different amounts of sunlight at different times of the year.
D) The Earth orbits more slowly in June causing the sun to shine brighter during the summer months than during the winter
Answer: C
Explanation:
Because the tilt of the earth on its access causes one half of the earth to get more direct sunlight because its pointed right at the sun while the other half is getting non direct sunlight making it colder in that part.
Which dams are likely to be removed or are being debated for removal
Answer:
damaged or old ones
Explanation:
Which of the following events takes place during the mitotic phase of the cell cycle?
O Duplication of DNA
Duplication of
DNA
Duplication of
centrioles
Which of the following events takes place during the mitotic phase of the cell cycle?
Separation of Chromosomes
Duplications of centrioles
Division of Cytoplasm
Separation of
chromosomes
Division of
cytoplasm
The events that takes place during the mitosis are separation of chromosomes, duplication of centrioles, division of cytoplasm, separation of chromosomes and division of cytoplasm.
Phases of mitosisThe majority of the cell's life is spent in the interphase, just before prophase, where mitosis's start-up is prepared for (the DNA is copied). The prophase is technically the first phase of this process, though, because the actual process requires the division of the nucleus. The duplicated chromosomes are aligned, separated, and transferred to the cell's opposite poles during the multistep mitotic phase, after which the cell divides into two brand-new, identical daughter cells.The cell divides its cytoplasm and divides its DNA into two sets during the mitotic (M) phase to produce two new cells.For more information on mitosis kindly visit to
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Describe an animal that will be affected by climate change, and is this animal in danger of going extinct?
Answer:
Explanation:
Many animals are being affected by climate change, but one example is the polar bear. Polar bears rely on sea ice to hunt for food and to mate and raise their young. As the Arctic sea ice melts due to global warming, polar bears are losing their habitat and food sources. This puts them at risk of starvation, decreased reproductive success, and ultimately, extinction.
Why would some people think that biotech engineers are “Playing God”?
Answer:
Some people may think that biotech engineers are "playing God" because they are manipulating living organisms and genetic material in ways that were previously impossible. This may be perceived as overstepping human boundaries and interfering with the natural order of things.
Additionally, some people may view biotech engineering as a threat to traditional values and beliefs, particularly in the areas of religion and ethics. For example, genetically modifying animals or plants to enhance certain traits or abilities may be seen as altering the natural order of things or "playing God" in a way that is morally or ethically questionable.
Furthermore, concerns about the safety and long-term effects of biotech engineering may also contribute to the perception that engineers in this field are "playing God". There may be concerns about unintended consequences, such as the creation of unintended mutations or the spread of genetically modified organisms to unintended locations.
Overall, the perception that biotech engineers are "playing God" is rooted in concerns about the ethical and moral implications of manipulating living organisms and genetic material in ways that were previously impossible.
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What does it mean that genetic advantages are not absolute? What is an example?
Genetic advantages are not absolute because a given genotype may be adaptive in an environment and deleterious in another condition, an example of this is the allele associated with sickle cell anemia that confers adptation to malaria.
What is an adaptive genotype?An adaptive genotype is any gene combination such as a given allele that confers a certain adaptive advantage to the individual who carries such a mutation for a given environment.
Therefore, with this data, we can see that adaptive genotypes depend on the environment in which the individual lives and develops.
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The statement that genetic advantages are not absolute means that possessing certain advantageous genes or traits does not guarantee success or superiority in all circumstances or environments. While certain genetic traits may provide an advantage in specific conditions, their effectiveness can be influenced by various factors such as environmental changes, interactions with other organisms, or the presence of alternative strategies.
An example of genetic advantages not being absolute can be seen in antibiotic resistance in bacteria. Some bacteria possess genetic mutations that confer resistance to certain antibiotics. In environments where these antibiotics are present, the resistant bacteria have an advantage over non-resistant bacteria and are more likely to survive and reproduce. However, in the absence of antibiotics, these resistant bacteria may not necessarily have a significant advantage and may even be at a disadvantage compared to non-resistant bacteria. They might require additional energy or resources to maintain the resistance mechanism, making them less efficient in resource-limited conditions.
Furthermore, the effectiveness of genetic advantages can also change over time due to various factors such as evolutionary pressures, emergence of new threats, or shifts in the environment. For example, in response to the widespread use of pesticides, certain insect populations may develop genetic resistance to these chemicals. However, as the use of stronger or alternative pesticides increases, the previously advantageous resistance may become less effective or even detrimental, leading to a decline in the population.
These examples illustrate that genetic advantages are context-dependent and influenced by various factors. What may be advantageous in one situation or environment may not necessarily be advantageous in another. Evolutionary processes constantly shape and modify genetic traits, and the effectiveness of these traits can vary depending on the specific conditions and challenges faced by organisms.
The longer the poly a tail in general the longer a messenger RNA will survive in the cytoplasm true or false 
Answer:
True. The poly(A) tail at the 3' end of messenger RNA (mRNA) protects it from degradation by exonucleases and helps to promote mRNA stability and translation efficiency in the cytoplasm. The longer the poly(A) tail, the more protection it provides and the longer the mRNA will survive.
Which statement is the best description of how the heart delivers oxygen to the body cells?
The heart breaks down carbon dioxide into carbon and oxygen.
The heart pumps oxygenated blood to the body cells.
The heart take oxygen from the air.
The heart pumps air throughout the body, delivering it to the cells.
Answer:
Explanation:
The statement that best describes how the heart delivers oxygen to the body cells is: "The heart pumps oxygenated blood to the body cells." The heart's main function is to circulate blood throughout the body. The blood that the heart pumps to the body contains oxygen, which is used by the body cells for energy. The heart receives deoxygenated blood from the body, pumps it to the lungs to be oxygenated, and then pumps it back to the body to supply the cells with oxygen. Therefore, the heart's role is to deliver oxygenated blood, not air, to the body cells. The heart does not break down carbon dioxide into carbon and oxygen; this process occurs in the lungs during respiration.
Please answer and help for number 16. And explain your answer A,B,C or D
Answer: I have no clue if I'm right but B. Conditions in the environment favor purple lupines.
Explanation:
It seem that the purple ones thrive better in that eco system.
I'm so sorry if I'm wrong!
17. An instructor leads_____ in a group format at the front of the class.
OA. personal training sessions
OB. training outlines
OC. fitness classes
OD. fitness workshops
Answer:
OC. Fitness classes.
Explanation:
Fitness classes are typically conducted in a group format led by an instructor at the front of the class. The instructor guides the participants through various exercises, movements, or routines designed to improve their fitness levels. Examples of fitness classes include aerobics, spinning, Zumba, yoga, and Pilates. Personal training sessions, on the other hand, are typically one-on-one sessions with a trainer, where the workout program is customized to the individual's needs and goals. Training outlines and workshops are instructional materials or educational sessions designed to teach specific skills or knowledge.
Many animals have a heart and circulatory system. (a) Explain why animals need a heart and circulatory system.(4)
Answer:
because if they did not have a heart and circulatory system, none of there muscles would be able to function properly and they would die very quickly.
Explanation:
As of 2017, the use of antibiotics in CAFOs are prohibited for:
Please choose the correct answer from the following choices, and then select the submit answer button.
Answer choices
enabling growth enhancement.
increasing fertility.
slowing the progression of viruses.
treating bacterial infections.
Answer: enabling growth enhancement.
Explanation:
As of 2017, the use of antibiotics in CAFOs (Concentrated Animal Feeding Operations) are prohibited for enabling growth enhancement.
Can someone help me out with the ones labeled 1,2,3 please :)
The options for the answers are :
• Plasma
• Lymph
• Cells
• Erythrocytes,Leucocytes and
platelets
• 90%
• 80%
• 20%
• 10%
Answer:
1- Cells
2- 90%
3- 10%
Explanation:
I'm pretty sure thats right?
How does the concentration of carbon dioxide affect the rate of photosynthesis in tomato plants?
(USE CER)
Claim, evidence, reasoning.
Answer:
Claim: The concentration of carbon dioxide affects the rate of photosynthesis in tomato plants.
Evidence: The process of photosynthesis in plants involves the conversion of carbon dioxide into organic compounds, with the help of energy from light. Thus, an increase in the concentration of carbon dioxide can potentially increase the rate of photosynthesis. Studies have shown that tomato plants exposed to higher levels of carbon dioxide exhibit increased rates of photosynthesis, resulting in greater growth and yield. On the other hand, when plants are exposed to low levels of carbon dioxide, their rate of photosynthesis decreases, which can lead to stunted growth and reduced yield.
Reasoning: The relationship between carbon dioxide concentration and photosynthesis can be explained through the process of diffusion. Carbon dioxide diffuses into the leaves of a plant through small openings called stomata. When the concentration of carbon dioxide outside the plant is higher than inside, it diffuses into the plant more quickly, which can increase the rate of photosynthesis. However, when the concentration of carbon dioxide outside the plant is lower than inside, diffusion slows down, which can decrease the rate of photosynthesis. Thus, the concentration of carbon dioxide plays a crucial role in the process of photosynthesis in tomato plants.
In conclusion, based on the evidence and reasoning presented, we can claim that the concentration of carbon dioxide affects the rate of photosynthesis in tomato plants.
The concentration of carbon dioxide affects the rate of photosynthesis in tomato plants. Higher amounts of CO2 lead to increased rates of photosynthesis until a certain point, after which the rate decreases due to stomatal closure.
Explanation:The concentration of carbon dioxide plays a vital role in the rate of photosynthesis in tomato plants. High concentration of carbon dioxide increases the rate of photosynthesis up to a certain point beyond which the rate declines.
Claim: Higher carbon dioxide concentration increases the rate of photosynthesis in tomato plants. Evidence: In several scientific experiments, tomato plants exposed to higher levels of carbon dioxide showed an increase in the rate of photosynthesis, which resulted in more biomass formation. However, if the concentration becomes too high, the rate of photosynthesis begins to decrease. Reasoning: In photosynthesis, carbon dioxide is used to produce glucose, which is used as a form of energy. When more carbon dioxide is available, the plants can carry out photosynthesis quicker, hence, the rate increases. However, too much CO2 can result in stomatal closure, reducing the intake of CO2, and slowing down photosynthesis.
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Predator populations are expected to be affected by the rise in the proportion of light moths brought on by the presence of lichen on trees.
While the number of birds may initially decline, natural selection may eventually favor birds with better vision or those that can adapt to hunting alternative types of prey.
The most likely outcome for predator populations is that they may alter their hunting techniques or look for alternative food sources, thereby changing the dynamics of both predator and prey populations.
Natural selectionIn this case, the most likely outcome for predator populations is that birds may alter their hunting tactics or look for alternative food sources.Birds that predominantly hunt dark moths will have a harder problem finding food after the proportion of light moths reaches almost 100%. When the birds adjust to the new environment, this can cause a temporary decline in bird populations. Yet over time, natural selection can favor birds with a stronger vision since they can find and catch the surviving black moths more easily.As an alternative, birds may alter their hunting techniques and look for different types of prey, including insects that are not disguised by the tree bark.learn more about Natural selection here
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Explain The design and function of a marine sponge. In great detail
Oceans and freshwater ecosystems all over the world are home to a diverse collection of aquatic creatures known as marine sponges, or Porifera.
What features and purposes do sponges have?To keep bacteria out of the sponge's cells and trap food inside of them, microscopic structures inside the sponge known as flagella create currents. The large amount of water that passes through sponges every day is made tolerable by their sturdy skeletal systems.
What functions can marine sponges perform?Sponge habitats may be greatly impacted because they filter vast amounts of water, which removes food particles (a carbon source) and other nutrients (such as oxygen, silicon, and nitrogen) from the water column.
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In one experiment, the parietal generation is formed by pure parents colored yellow (VV) and green (vv). All individuals formed in the crossing of the P generation have a yellow color (Vv) and are called the F1 generation.
The crossing of F1 components generated offspring for the F2 generation, three of which were yellow (VV, Vv and Vv) and one was green (vv).
According to the factors that determine the color of the generated individuals, it is possible to state that
a) The yellow color is dominant and the green color is recessive.
b) The yellow color is recessive and the green color is dominant.
c) The color of the factors is determined by heredity in one of the genes.
d) One color is expressed at the expense of the inactivity of the other.
Correct alternative: a) The yellow color is dominant and the green color is recessive.
As observed in his experiment, Mendel identified that two factors determine the color of peas: a dominant for the yellow color and a recessive that expressed the green.
The dominant gene is the one that determines a characteristic, even when in simple doses in the genotypes. The recessive gene is only expressed when in double dose, because in the presence of a dominant, it becomes inactive.
draw the expanded structural formula for the product is two propanol molecules underwent a dehydration synthesis reaction
Dehydration of propanol involves the removal of a water molecule from the propanol molecule, resulting in the formation of propene.
What is dehydration of propanol?The reaction is typically carried out by heating propanol with a strong acid catalyst such as sulfuric acid. The reaction can be represented by the following equation:
CH3CH2CH2OH → CH3CH=CH2 + H2O
The reaction proceeds through the formation of a protonated alcohol intermediate, which loses a water molecule to form a carbocation. The carbocation then undergoes deprotonation to form the propene product. The dehydration of propanol is an example of an elimination reaction, where a small molecule is eliminated from a larger molecule to form a new product.
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