Transmission of impulses along a neuron in the vertebrate nervous system ordinarily occurs in only one direction because, following passage of an action potential, the neuron is temporarily in a refractory period or hyperpolarized. this is caused by which answer choice?

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.

the answer is yes, they are born/created, then they grow to their limit then produce offspring, then die.

there are mainly three domains in biological classification namely; archaea, bacteria, and eukarya.

archaea includes all the prokaryotic cells which are characterized by their lipid membranes. they have branched hydrocarbon which is attached to glycerol through an ether linkage.

bacteria includes all the prokaryotic cells, the cell membrane of which are made up of the unbranched fatty acid chain. in addition, they are attached to glycerol through an ester bond.

eukarya includes all the eukaryotic cells, that is, the cells contain a nucleus and other membrane-bound cell organelles.

they can be autotrophic as well as heterotrophic, unicellular as well as multicellular

they include kingdoms like protista, plantae, animalia, fungi et cetera.

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explanation: