A chemical messenger that controls body processes.

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Multiple Choice

A chemical messenger that controls body processes.

Explanation:
A hormone acts as a chemical messenger that controls body processes. It is produced by glands and released into the bloodstream, traveling to distant target tissues. There, it binds to specific receptors and triggers responses that regulate metabolism, growth, reproduction, and other functions. This long-distance signaling contrasts with nerve signaling, which uses neurons and neurotransmitters to affect nearby cells very quickly. Glands are the sources of hormones, not the messenger itself, and a stimulus is a trigger that starts a response but isn’t the chemical messenger. So the best description for a chemical messenger that governs body processes is a hormone.

A hormone acts as a chemical messenger that controls body processes. It is produced by glands and released into the bloodstream, traveling to distant target tissues. There, it binds to specific receptors and triggers responses that regulate metabolism, growth, reproduction, and other functions. This long-distance signaling contrasts with nerve signaling, which uses neurons and neurotransmitters to affect nearby cells very quickly. Glands are the sources of hormones, not the messenger itself, and a stimulus is a trigger that starts a response but isn’t the chemical messenger. So the best description for a chemical messenger that governs body processes is a hormone.

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