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Verdich [7]
4 years ago
8

What could prevent sperm from reaching and fertillizing an egg?

Biology
1 answer:
Aleks04 [339]4 years ago
6 0
Numerous barriers can prevent sperm from reaching and fertilizing the egg, this can be that the Sperm may be defected, or lack the required number of mitochondria needed to help move the sperm. Also, if sperm had already fertilized the egg, there is a change that takes place to the membrane surrounding the egg preventing further sperm from fertilizing.
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A controlled experiment is one that_______________.
Pachacha [2.7K]

Answer:B

Explanation:

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3 years ago
When an animal confronts a "fight-or-flight" situation, the release of epinephrine promotes glycogen breakdown in the liver, hea
nika2105 [10]

Answer: and Explanation:

A.)The reason for the different products of glycogen breakdown in the two tissues is that glucose 6-phosphotase which is

a known enzyme that brings about hydrolysis of glucose 6-phosphate as a result of the creation of a phosphate group and free glucose is not available in heart and skeletal muscle, therefore,any glucose 6-phosphotase that is produced will just enters the glycolytic pathway and get converted to lactate through pyruvate, in the absence of Oxygen O2.

B) Whenever a situation involving fight or flight arises, the concentration of glycolytic precursors becomes high in order to prepare for muscular activity. Since the membrane is impermeable to any charged species, and at the same time glucose 6-phosphotase enzyme cannot be moved through the glucose transporter, then there cannot be a release of Phosphorylated intermediates from the cell. The blood glucose level must be maintained by the liver by releasing of glucose.

glucose that is later formed from glucose 6-phosphotase then enters the bloodstream.

8 0
3 years ago
Quade is studying for an exam, which will cover neurons and action potentials. He has drawn a diagram that shows the segments of
VMariaS [17]

Answer: positive sodium ions

Explanation:

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3 0
3 years ago
The original mice that you cross are called the <br> .The offspring from that cross are called the
Serjik [45]

The original mice that you cross are called the parent generation. The offspring from that cross are called the first Filial generation.

8 0
2 years ago
Why does our world have more plats than animals
Komok [63]
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