What makes finches in the Galápagos Islands a good example of speciation?
A. It is very easy to train a Galápagos finch to eat seeds instead of
insects.
B. Galapagos finches have different beak adaptations.
C. Galapagos finches teach each other new adaptations.
O
D. There is only one species of Galapagos finch.
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Answer: 20 pounds in a month

Explanation: you can loose up to 5 pounds a

Answer:

C) sense strand of DNA, substituting uracil for thymine.

Explanation:

The antisense strand matches the sense strand. Thymine is only used in DNA while Uracil is only used in RNA.

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Answer: Burying beetles are true to their name—they bury the carcasses of small vertebrates such as birds and rodents as a food source for their larvae.

Explanation:

they are on the endangered species list

jane goodall said that they are "nature's most efficient recyclers."

The American burying beetle is one of nature's most efficient recyclers, feeding and sheltering its own brood while returning nutrients to the earth to nourish vegetation and keeping ant and fly populations in check.

populations of prairie chickens and passenger pigeons have been reduced by the loss of the burying beetle.

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quizlet

The process likely to be occurring in the plant's roots will be nitrogen fixation.

It is a process whereby atmospheric nitrogen is converted to usable forms of nitrogen in the soil.

Nitrogen fixation takes place in the root nodules of leguminous plants in association with some symbiotic bacteria.

Thus, the only process that could be happening in the plant's root is nitrogen fixation.

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The trophic web is the interaction between different organisms in which there is energy transference. In the attached example, we consider plants, beetle, rabbit, frog, eagle, fox, mountainlion, and fungi.

The trophic web is the interaction between different organisms involving transference of energy when some of them feed on the other ones.

The ones placed at lower levels pass energy to the ones at the higher levels.

Organisms at each level feed on the preceding one and become food for the next one.

• The first link corresponds to a producer organism -autotroph-.

• The following links are the consumers -heterotrophs- ⇒ herbivores and carnivores.

• The last links are the decomposers that degrade organic matter from dead organisms.

Because it is a web, all organisms are in equilibrium until a change occurs. When a sudden change affects any of the involved links, there can be a cascade effect on the web.

Any change in a link population size (increasing or decreasing) will affect the superior links and the immediately anterior link.

Example.

To make the trophic web, first, we need to have at least four links.

So first, let us list the organisms we are working with, and then define the position of each of the organisms on the web.

Producer → this is the autotroph organism that takes energy from the sun or any other inorganic source → An example of this is any plant.

Consumers → heterotroph

⇒ Herbivores → These are the animals that feed on any part of the plants → These are the beetle and the rabbit

⇒ Carnivores → These are the animals that feed on herbivores → These are the frog, the fox, the eagle, and the mountain lion

Decomposer → detritivorous organisms that take energy from dead matter → Fungi

Trophic web,

Plant >> Beetle and Rabbit

Rabbit >> Eagle

Beetle >> Frog

Frog and rabbit >> Fox

Fox and Eagle >> Mountain lion

Plants, beetle, Rabbit, Fox, Eagle, Mountain lion >> Fungi

You will find an image in the attached files.

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The probability that neither of them is a heavy smoker is 0.53 or 53%

Probability serves to mathematically estimate the possibility of events that happen by chance, that is, as a matter of luck.

In this case:

Probability that selected one is heavy smoker is:

p=270/1000=0.27

Number of individuals selected  is 2 and We know that:

P(X=x)=nc_x(1-p)^{n-x}(p)^x

We need to prove that X=0:

P(X=0)=nc_0(1-0.27)^{2-0}(0.27)^0

P=0.5329

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Answer:

the answer for number 1 is A and number 2 is C

Explanation:

1. Insulin controls the level of glucose in the blood by instructing the liver to remove the sugars and store them. So, this cause the amount of glucose (sugar) to decrease as the level of insulin increases.

2. Hormones and receptors have connections when it comes to this topic. Tissues have nothing to do with them, because it didn't ask about the body parts and etc. Antibodies; more to the drugs topic. And carbohydrates has nothing to do with hormones for this question.

The probability of the offspring will be 50%, 50%, and 0% respectively.

It seems the allele for the trait in question is F(f) from the image.

One parent is heterozygous while the other is homzygous.

      Ff    x    FF

   FF   FF   Ff   Ff

Probability of FF = 2/4 or 50%

Probability of Ff = 2/4 or 50%

Probability of ff = 0

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The percentage of each genotype is;

A cross is a system by which the genotype of an organism can be ascertained.

We are told that this cross is between a het--erozygous mouse with a hom--ozygous recessive mouse. Thus we have Ff and ff.

We now have the percentage of each genotype as;

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Answer:

Blanks in the boxes (left to right, top to bottom, as you would read)

BbEE
BbEE

BbEe

bbee

Genotypes (top to bottom blanks):

12.5%

6.25%

6.25%

Phenotype (top to bottom blanks):

56.25%

18.75%

18.75%

Answer:

Hypertonic

Explanation:

A tonicity with a high concentration of solutes is said to be Hypertonic.    

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Pan~

Tonicity with a high concentration of solutes is said to be hypertonic.

Tonicity is the ability of an extracellular solution to allow the movement of water in and out of the cell by osmosis. The terms hypertonic, isotonic and hypotonic decide the movement of water into or out of the cell.

The hypertonic solution is a kind of solution which has a high concentration of solutes (salts, electrolytes). In Biology, a cell is said to be in a hypertonic solution if the outside solution has a high concentration of solutes than the inside the cytoplasm of the cell. In this situation, there will be a net flow of water out of the cell.

The hypotonic solution is a type of solution which has a low concentration of solute. ). In Biology, a cell is said to be in a hypotonic solution if the outside solution has less concentration of solutes than the inside the cytoplasm of the cell. In this situation, there will be a net flow of water into the cell.

Isotonic solution is one which has the same concentration of water and solutes as inside the cytoplasm of a cell. If a cell is placed in an isotonic solution, there is no net water movement.

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It would happen that the effectiveness of an original vaccine could become less if there was a mutation in the virus that caused the protein spike to change because the antibodies created would not be specific for the new virus.

Vaccines trigger an immune response to fight disease-causing organisms, a mutation in the virus to be fought would change the effectiveness of this immune response, as the specificity would not be the same with the mutant virus.

With this information, we can conclude that The immune response would not be specific for the new virus that caused the protein spike to change.

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Answer:

B

Explanation:

genetic diversity is the biological variation that occur within species

The evidence for endosymbiosis present in eukaryotic cells is associated with the presence of mitochondria and chloroplasts.

The endosymbiosis theory is a theory in biology that states eukaryotic cells evolved as a consequence of symbiotic relationships between prokaryotes and primitive eukaryotes.

The endosymbiosis theory is supported by mitochondria and chloroplasts, which contain their own genetic material, ribosomes and a similar size when compared to bacteria.

In conclusion, the evidence for endosymbiosis is associated with the presence of mitochondria and chloroplasts.

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Answer: D. Amylase

Explanation:

Amylase is a enzyme that breaks down protein present in food.

No, I won't support research to genetically modify humans to be able to use photosynthesis for part of our energy and reduce the amount of food we need.

This is the process in which green plants manufacture their food in the presence of sunlight.

The research won't be supported as a result of the absence of the digestive system to suit the product and reducing amount of food needed will lead to wastage.

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The step that relates to the energy transformation in photosynthesis is respiration.

Respiration is the process whereby the chemical energy locked up in carbohydrates is unlocked into another energy form that is usable to living organisms.

In other words, chemical energy in carbohydrates is converted to ATP. This process can take place with (aerobic respiration) or without (anaerobic respiration) oxygen.

Carbohydrates are primarily generated from photosynthesis by green plants.

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Answer:

B

Explanation:

Answer: B. This allows them to move in unison, so that when one moves in a zone every zone shifts.

Explanation:

Answer:

the answer is B. Antigenic drift

In the absence of ADP, the conversion of NADH to NAD+ via the electron transport chain is prevented from happening.

Glycolysis is the series of reactions by which glucose is broken down to pyruvate by the body.

NAD+ is a limiting factor in glycolysis. In the absence of ADP, the conversion of NADH to NAD+ via the electron transport chain is prevented from happening.

In conclusion, NAD+ is a limiting factor in glycolysis.

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The lagging strand runs in a   5’ to 3’ direction and is replicated  discontinuously.

The other strand, called delayed, is replicated discontinuously. In this case, the presence of Okazaki fragments is necessary, small pieces of DNA that will bind to form a new strand. - DNA is degraded by two types of enzymes.

The ends of a DNA strand are classified as 5' and 3', as they correspond to the carbon number of the pentose where the phosphate and hydroxyl (OH) group are located, which join in a phosphodiester bond.

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The complementary sequence is TGTTCTGCCATGACT the mRNA is UGU UCU GCC AUG ACU and amino acid sequence Cysteine-Serine-Alanine-Methinine-Threonine.

The genetic code is a series of instructions to synthesize a protein form a given gene sequence.

The genetic code starts in the DNA, then pass to the mRNA, and finally to the protein sequence.

In conclusion, the complementary sequence is TGTTCTGCCATGACT the mRNA UGUUCUGCCAUGACU and amino acid sequence Cysteine-Serine-Alanine-Methinine-Threonine.

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The probability that they both were planted alone is 0.3325.

Probability serves to mathematically estimate the possibility of events that happen by chance, that is, as a matter of luck.

In this case:

So the probability that  both were planted alone is 0.3325.

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The music industry between 1980 and 1987 experienced a positive turnaround  in quality and competition.

This act was set up by the government in 1987 to ensure that the consumer welfare was made priority.

There was an increase in quality and competition due to intellectual property laws which was established and also led to the music industry experiencing a boom.

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Among the following HIV should be reportable reasons to protect public health.

HIV impairs the body's defenses against infections and leads to AIDS. Contact with contaminated blood, or fluids might result in the virus being spread. Flu-like symptoms including fever, sore throat, and exhaustion might appear a few weeks after HIV infection. Until AIDS develops, the illness is typically asymptomatic. Fatigue, fever, night sweats, and weight loss are a few of the signs and symptoms of AIDS. Despite the fact that there is no known treatment for AIDS, diligent adherence to anti-retroviral therapy (ART) can significantly decrease the disease's progression, avoid complications and secondary infections, and lengthen life. One of the primary tactics used in the prevention and control of HIV/AIDS around the world is the dissemination of information and awareness about HIV.

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According to the research, a molecular clock can be used to determine the number of differences in a specific DNA sequence of two species (c).

It is a tool that allows us to relate the divergence time or the time elapsed since the divergence of two current lineages from their common ancestor.

It is based on analyzing and comparing the genetic material of organisms to establish the number of mutations.

Therefore, we can conclude that a molecular clock can be used to determine the number of differences in a specific DNA sequence of two species (c).

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Answer:

C. Frontal lobe

Explanation:

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The frontal lobe of the brain, behind the forehead, is strongly associated with motor function, spontaneity, impulsive behavior, judgement decisions, and social behaviors and mood.

The host cell may lyse or may continue to divide and replicate both itself and the prophage.

Lytic cycle:

The infecting phage kills the host cell at the end of the lytic cycle, also known as a virulent infection, to create a large number of its own offspring. The phage genome immediately produces early proteins that degrade the host DNA after being injected into the host cell, enabling the phage to take over the cellular machinery.

The remaining proteins needed to construct fresh phage particles are subsequently synthesized by the phage using the host cell. The new genetic material is packed into the head while new daughter phage particles are built, and the heads and sheaths are created independently. In the course of this process, phage enzymes gradually weaken the host cells, which eventually burst, dispersing 100–200 additional phage progeny into the environment.

Lysogenic cycle:

The lysogenic cycle, also known as temperate or non-virulent infection, uses the host cell as a haven where it can survive in a latent state. It does not harm the host cell. After the phage DNA is injected into the host cell, it uses integrases encoded by the phage to integrate into the host genome, at which point it becomes known as a prophage.

The host cell divides for the duration that it is there and does not create the proteins necessary to make progeny, at which point the prophage genome is passively copied alongside the host genome. The bacterial hosts are typically somewhat unaffected by this procedure because the phage genome is typically quite tiny.

I understand the question you are looking for is this:

As a consequence of infection by a temperate bacteriophage such as lambda, the host cell

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Answer:

Facilitated diffusion

Explanation:

Diffusion across a membrane, along a concentration gradient via membrane protiens. No energy is required hence passive.

Answer

For a mitocondria.

The hydrogen ion reservoir is located in the matrix and ATP is synthesized in the inner mitochondrial membrane.