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RSB [31]
3 years ago
6

Transmission of impulses along a neuron in the vertebrate nervous system ordinarily occurs in only one direction because, follow

ing passage of an action potential, the neuron is temporarily in a refractory period or hyperpolarized. This is caused by which answer choice?
Biology
1 answer:
bija089 [108]3 years ago
6 0

Answer:

The correct answer would be - the potassium ions continue to move out of the axon.

Explanation:

During transmission of the impulse when sodium channels are closed and potassium channels are open, the cell membrane of the axon cell becomes hyperpolarized due to the continuous movement of the potassium ion to outside the axon. During this refractory period, the impulse can not be fire or generated.

Thus, the correct answer would be - the potassium ions continue to move out of the axon.

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Suppose the fictional condition lycanthropy is an autosomal dominant disorder that causes an affected person to have a strong ph
hodyreva [135]

Answer:

Sperm undergo more mitotic cellular divisions than egg and therefore have a higher risk of developing a spontaneous mutation.  

Explanation:

As you have seen in the question above, lycanthropy is a mutation that is more likely to be established as the supply of male gametes comes from older men. This is because sperm undergo more mitotic cell divisions than eggs, and therefore are at greater risk of developing a spontaneous mutation.

In order for you to understand this, you need to know that eggs (which are female gametes) are produced at once in a woman's body. Thus, cell division is limited and therefore the opportunity for spontaneous mutations to occur is also limited. However, men produce sperm from adolescence to death, creating the need for countless cell divisions, which can develop genetic errors that create spontaneous mutations in gametes.

3 0
3 years ago
How does the heart keep the blood flowing throughout the body?
madam [21]
It contracts and relaxes!

Hope this helped u!!
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MARKING PEOPLE AS BRAINLIST ⚠️⚠️⚠️<br><br> Give three pros and cons of fire suppression
IrinaK [193]
Cons:
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Pros
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4 0
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What two words best describe bacterial reproduction? Why?
Vadim26 [7]

Answer: Bacteria reproduce through a process called binary fission. During binary fission, the chromosome copies itself, forming two genetically identical copies. Then, the cell enlarges and divides into two new daughter cells. The two daughter cells are identical to the parent cell.

Explanation:

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