Bio Ch45 Activities Quiz

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Which of these is the second of the three stages of cell signaling?


Receptors for nonsteroid hormones are located in _____.

association with a cell’s plasma membrane

Which of these is a nonsteroid hormone?

epinephrine and oxytocin

How do nonsteroid hormones differ from steroid hormones?

nonsteroid hormones act via signal transduction pathways; steroid hormones do not act via signal transduction pathways ( Since they do not enter the cell, nonsteroid hormones act via signal transduction pathways.)

Which of these extracellular signal molecules could diffuse through a plasma membrane and bind to an intracellular receptor?


The primary reason steroid hormones usually act slowly is that _____.

they turn genes on or off and it takes time for gene products to build up or become depleted

Steroid hormone-receptor complexes act in _____.

the nucleus

Which of these glands secretes releasing hormones?


Which of these hormones are responsible for the "fight or flight" response to danger?

epinephrine and norepinephrine

Adrenocorticotropic hormone (ACTH) triggers the release of _____ in response to stress.

glucocorticoids ( In response to stress, ACTH stimulates the adrenal cortex to secrete glucocorticoids.)

_____ are the main male hormones.


What hormone promotes water retention by the kidneys?

antidiuretic hormone (ADH)

Which hormone opposes the action of parathyroid hormone?


Which hormone stimulates hormone production by the ovaries and testes?

luteinizing hormone (LH) ( LH stimulates hormone production by both the ovaries and testes.)

Which hormone stimulates milk production?

prolactin ( Prolactin, secreted by the anterior pituitary, stimulates milk production by the mammary glands.)

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