Cypress College » Biology » Biology 241 - Accelerated General Human Physiology » Summer 2021

Question #1

What is the best definition of a hormone?

A. chemical secreted by a gland

B. chemical substance that affects the activities of a cell

C. chemical that travels in the bloodstream and affects the activities of a cell

D. chemical that travels in the bloodstream

Question #2

Which hormones use second messenger systems?

A. steroid hormones

B. epinephrine, thyroid hormones, and steroid hormones

C. epinephrine

D. thyroid hormones

Question #3

Which of the following releases corticotropin-releasing hormone (CRH)?

A. hypothalamus

B. adrenal cortex

C. posterior pituitary

D. anterior pituitary

Question #4

Hormone activities are regulated by homeostatic negative feedback loops.

A. FALSE

B. TRUE

Question #5

The chemical signal released into the synaptic cleft and binds to the postsynaptic membrane protein is called:

A. hormone

B. neurotransmitter

C. neurohormone

D. dendrite