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julia-pushkina [17]
2 years ago
7

When breathing, which body was part contracts to help expand the lung and relaxes to allow air exhalation?

Biology
1 answer:
SOVA2 [1]2 years ago
3 0
C is your answer hope that helps!
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Identify which region of histone molecules are exposed and hence may easily be modified and state the names of the key chemical
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Answer: acetyl group, methyl group, or phosphate group

Explanation  Basically different modification can occur to  the tail regions of histone .This includes addition of the groups listed above

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Which of the following factors would affect population distribution but not size in a given country
Rufina [12.5K]
A population consists of all the organisms of a given species that live in a particular area
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Pigmented eyes (P) are dominant to non-pigmented (p), and dimpled chins (D) are dominant to Non-dimpled chins (d). A pigment-eye
Ivenika [448]

Answer:

PpDD and PpDd

Explanation:

Pigmented eyes (P) are dominant to non-pigmented (p), and dimpled chins (D) are dominant to Non-dimpled chins (d).

The <u>possible genotypes of a pigment-eyed, dimple-chinned person</u> would be  PPDD, PpDd, PPDd, PpDD while a blue-eyed person without a dimpled chin would have the genotype ppdd.

The genotype of a blue-eyed, dimpled chin child would be either of ppDd or ppDD, but in this case, the mother is ppdd and as such, the child cannot have two copies of D allele. Hence, the genotype of the child can only be ppDd.

In order for the child to have blue eyes (pp), it means that the father has to have the non-pigmented allele (p). This also means that the father is heterozygous for eye pigmentation (Pp).

<em>Hence, the genotype of the father is now limited to </em><em>PpDD</em> <em>and </em><em>PpDd</em>.

8 0
2 years ago
Smooth endoplasmic reticulum:__________.1) Smooth endoplasmic reticulum stores calcium ions in muscle cells. 2) Is the major sit
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3

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I learned this last semester

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Para a ocorrência de osmose, é necessário que (analise as afirmações a seguir e marque como resposta a soma dos itens corretos u
mixer [17]

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(08) and (32)

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To make osmosis happen there has to be a difference in the concentration of solutes, between the inside and the outside of the cell. To valance this difference in concentration, water has to flow towards a place that has a higher number of solutes.

The lipids in the cell's wall make this membrane semipermeable. This allows the passage of specific components only, such as water through aquaporins. Lipids and other elements are of importance in the barrier because they maintain the cell separated from the outside, allowing it to be balanced as regards the different substances that can interact with it.

6 0
3 years ago
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