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sladkih [1.3K]
4 years ago
5

A defect in the absorption of certain nutrients in the small intestine has been linked to an abnormally-delayed initiation of di

fferentiation. If the levels of HER2, PTEN, and Akt protein can be estimated accurately, what is the earliest point in development at which the defect could be evaluated?
Biology
1 answer:
Art [367]4 years ago
7 0
When reading questions, be careful not to read too quickly. In this case, fast but inefficient reading will lead us to assume that it is asking about ...
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Explain what is meant by the term transverse section
KatRina [158]

Answer:

A transverse section is a cross-sectional part that is achieved by cutting the body or any part of the body structure in real or with help of imaging techniques in a horizontal plane. That plane crisscrosses the longitudinal axis at a 90-degree angle.

Explanation:

A cross section obtained by slicing, actually or through imaging techniques, the body or any part of the body structure, in a horizontal plane, i.e., a plane that intersects the longitudinal axis at a right angle. Because actual sectioning in the transverse plane results in inferior and superior portions, an anatomic transverse section may be a two-dimensional view of the cut surface on the inferior aspect of the superior portion, or of the superior aspect of the inferior portion. By convention, in medical imaging transverse sections usually demonstrate the form

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2 years ago
How are the three stages of photosynthesis linked?
pantera1 [17]

STEP ONE: Harvesting Radiant Energy

The first step of photosynthesis occurs in the chloroplasts of plant cells. Light photons are absorbed by a pigment called chlorophyll, which is abundant in the thylakoid membrane of each chloroplast. Chlorophyll appears green to the eye because it does not absorb green waves on the light spectrum. It reflects them instead, so that’s the color you see.

STAGE 2: Converting Radiant Energy

After radiant energy from sunlight is absorbed, the plant converts light energy into a usable form of chemical energy to fuel the plant’s cells

STAGE 3: Storing Radiant Energy

The last stage of the photosynthesis process is known as the Calvin-Benson cycle, in which the plant uses atmospheric carbon dioxide and water from soil to convert ATP and NADPH. The chemical reactions that make up the Calvin-Benson cycle occur in the stroma of the chloroplast.

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2 years ago
A series of interconnected food chains are known as
Phantasy [73]
I believe the answer to this question is a food web.

Food Web definition: "<span>a series of organisms related by predator-prey and consumer-resource interactions; the entirety of interrelated food chains in an ecological community." 

Source: </span>http://www.dictionary.com/browse/food-web
6 0
4 years ago
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Select all of the answers that apply.
slega [8]

Answer: creating an ozone layer to shield life from UV rays

Cynobacteria or blue green algae is the strain of bacteria, which was able to produce oxygen in the primitive earth as a result of photosynthesis. The abundance of oxygen in the atmosphere formed the ozone layer in the upper atmospheric layers, these layers are protective enough to provide a shield against the harmful UV radiations incident on earth coming from the sun.

5 0
3 years ago
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A gene can have many alleles. Why is it that any given person only carries two copies of each allele
Katyanochek1 [597]
Since diploid organisms have two copies of each chromosome, they have two of each gene. Since genes come in more than one version, an organism can have two of the same alleles of a gene, or two different alleles. This is important because alleles can be dominant, recessive, or codominant to each other.
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3 years ago
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