The Process of Molecules Going Against a Concentration Gradient That

question 55

Multiple Choice

The process of molecules going against a concentration gradient that requires energy and a membrane protein is termed

• A) active transport.
• B) active diffusion.
• C) facilitated diffusion.
• D) simple diffusion.
• E) osmosis.

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Definitions:

Antagonist

A substance that blocks or dampens a biological response by binding to and blocking a receptor rather than activating it.

Neurotransmitter

Compounds responsible for transmitting signals between neurons through synapses within the nervous system.

Agonist

An agonist is a chemical or drug that binds to receptors in the brain and activates them, mimicking the effects of naturally occurring substances and potentially influencing physiological and psychological processes.

Autonomic Neuron

A nerve cell that governs function in the autonomic nervous system, responsible for involuntary body functions like heart rate and digestion.