The Book Refers to the Axon Membrane as a "Gatekeeper

question 114

Multiple Choice

The book refers to the axon membrane as a "gatekeeper." This means that the membrane:

• A) determines whether an action potential will pass through the axon.
• B) controls the balance of positive and negative ions in the interior and the exterior of the axon.
• C) operates in an all-or-none fashion: if it opens, neurotransmitters may pass through, and if it does not open, they may not.
• D) uses the nodes of Ranvier to allow some ions to move out of the axon and neurotransmitters to move into the axon.

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Definitions:

Enzymes

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Origin Of Life

The process by which living organisms emerged from non-living matter, the specifics of which are still under scientific investigation.

Amino Acids

Organic compounds that serve as the building blocks of proteins, containing both an amino group and a carboxyl group.

Proteins

Proteins are large, complex molecules made up of amino acids and are essential for the structure, function, and regulation of the body's tissues and organs.