When Molecules Bind Temporarily with a Carrier Protein in a Cell's

question 41

Multiple Choice

When molecules bind temporarily with a carrier protein in a cell's membrane and move across the membrane from areas of higher concentration to areas of lower concentration this is known as

• A)simple diffusion.
• B)endocytosis.
• C)receptor-mediated osmosis.
• D)active transport.
• E)facilitated diffusion.

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Definitions:

Acetylcholine

is a neurotransmitter involved in muscle activation, memory formation, and the transmission of nerve impulses in the nervous system.

Agonist

A chemical or drug that binds to receptors in the brain and causes a reaction typical of a naturally occurring substance.

Excitatory Neurotransmitter

A chemical substance that promotes the generation of an electrical signal in the receiving neuron.

Psychoneuroimmunology

An interdisciplinary field that studies the interactions between the nervous system and the immune system, and how psychological factors can affect physical health.