Why does an action potential travel in one direction down an axon?

A. because it needs to reach the synapse to
trigger release of neurotransmitter
B. because voltage-gated sodium channels
cannot immediately reopen
C. because voltage-gated potassium
channels remain open longer
D. because the diffusion of charge can only
occur in one direction


B

Biology & Microbiology

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Based on their response to a particular hormone from

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The reason humans inhale oxygen is so that it can be used for:

What will be an ideal response?

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If the frequency of PKU, an autosomal recessive disease, is 1% in males, what is the frequency of females with PKU? (You may assume that the population is in Hardy-Weinberg equilibrium.)

What will be an ideal response?

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The transfer of pollen from the male reproductive structure to the female reproductive structure is called

A. ovulation. B. implantation. C. pollination. D. photosynthesis.

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