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

Question #1

What is the best definition of a hormone?

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

B. chemical secreted by a gland

C. chemical substance that affects the activities of a cell

D. chemical that travels in the bloodstream

Question #2

Which hormones use second messenger systems?

A. epinephrine, thyroid hormones, and steroid hormones

B. thyroid hormones

C. epinephrine

D. steroid hormones

Question #3

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

A. adrenal cortex

B. anterior pituitary

C. hypothalamus

D. posterior pituitary

Question #4

Hormone activities are regulated by homeostatic negative feedback loops.

A. TRUE

B. FALSE

Question #5

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

A. neurotransmitter

B. neurohormone

C. hormone

D. dendrite