Immediately After an Action Potential Passes Along an Axon, It

question 68

Multiple Choice

Immediately after an action potential passes along an axon, it is not possible to generate a second action potential; thus, we state that the membrane is briefly

• A) refractory.
• B) fully depolarized.
• C) above threshold.
• D) at the equilibrium potential.

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Definitions:

Peptidoglycans

A polymer consisting of sugars and amino acids that forms a mesh-like layer outside the plasma membrane of most bacteria, providing structural support and shape.

Archaea

One of the two prokaryotic domains. The absence of peptidoglycan in their cell walls sets them apart from the bacteria. Compare with bacteria.

70S Ribosomes

Ribosomes typical in prokaryotes and mitochondria, involved in the synthesis of proteins, comprised of a 50S and a 30S subunit.

Crenarchaeota

A phylum of Archaea that includes thermophilic, acidophilic, and psychrophilic microbes, often found in extreme environments.