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nirvana33 [79]
3 years ago
5

Why can only one sperm enter an egg

Biology
1 answer:
Iteru [2.4K]3 years ago
3 0
Because at that point, the egg would already be fertilized. Now in cases like identical twins, two sperm must enter the egg at the exact same time.
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any greens grown the earth itself

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The nursing student is preparing to ambulate an obese client. the rn is concerned about the student's ability to safely ambulate
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Please help!!
borishaifa [10]

Answer:

Bone marrow, amniotic fluid, and brain

Explanation:

In the choices, I notice that liver is also a part of Adult stem cells but so are the ones I mentioned.

Adult stem cells are found in small numbers in most adult tissues. To not get confused by embryonic stem cell, adult stem cells are there to replace dead cells throughout the growing process of a human which is also called somatic stem cells but this type of cells helps with the brain, bone and fluid

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5 0
3 years ago
Pepsin, an enzyme that is found in the stomach of humans, functions in breaking down proteins. It is denatured as it travels to
AnnZ [28]

Answer:

A. pH

Explanation:

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However, in this case of PEPSIN enzyme, which is a proteinous molecule produced in the stomach of humans and functions in breaking down proteins, its denaturation occurs as it moves along the digestive tract to the intestines. This is as a result of the changes in pH in the digestive tract.

The pH of the stomach where pepsin is produced is acidic i.e. <3.0. However, as one moves towards the intestine, the pH increases, which is unfavorable or considered harsh for the pepsin enzyme. Hence, it gets denatured.

7 0
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Question 3 , 4 , 5 , 6 and 7 <br> - 50 points ! and will mark u brainly <br> need help ASAP !
Kipish [7]

Answer:

READ EXPLANATION

Explanation:

3 - B

4 - D

5 - A

6 - C (?)

7 - D

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