Activities Quiz
1.

Which of these is the second of the three stages of cell signaling? (Activity 45A)

gene activation
reception
binding of a neurotransmitter to a plasma membrane receptor
transduction
cell response


2.

Receptors for nonsteroid hormones are located in _____. (Activity 45B)

the extracellular fluid
the cytoplasm
the nucleus
the cytosol
association with a cell's plasma membrane


3.

Which of these is a nonsteroid hormone? (Activity 45B)

estrogen
testosterone
both estrogen and testosterone
oxytocin
epinephrine and oxytocin


4.

How do nonsteroid hormones differ from steroid hormones? (Activity 45B) and (Activity 45C)

nonsteroid hormones bind to a cell's DNA; steroid hormones do not bind to a cell's DNA
nonsteroid hormones act via signal-transduction pathways; steroid hormones do not act via signal-transduction pathways
the action of nonsteroid hormones never affects gene expression; the action of steroid hormones always affects gene expression
nonsteroid hormones bind to cytoplasmic receptors; steroid hormones bind to plasma membrane receptors
nonsteroid hormones are fat-soluble; steroid hormones are water-soluble


5.

Which of these extracellular signal molecules could diffuse through a plasma membrane and bind to an intracellular receptor? (Activity 45C)

estrogen
epinephrine
cellulose
oxytocin
starch


6.

The primary reason steroid hormones usually act slowly is that _____. (Activity 45C)

they are produced at very low concentrations
acting via a signal-transduction pathway makes for slower responses than does directly interacting with a cell's DNA
they are too large to enter a cell and therefore must first bind to a plasma membrane receptor before having an effect on a cell
target cells tend to ignore steroid hormones in favor of nonsteroid hormones
they turn genes on or off and it takes time for gene products to build up or become depleted


7.

Steroid hormone-receptor complexes act in _____. (Activity 45C)

the nucleus
lysosomes
vesicles
the cytoplasm
the plasma membrane


8.

Which of these glands secretes releasing hormones? (Activity 45D)

hypothalamus
adrenal cortex
thymus
ovaries
testes


9.

Which of these hormones are responsible for the "fight or flight" response to danger? (Activity 45D)

insulin and glucagon
thyroxine and calcitonin
androgens and estrogens
antidiuretic hormone (ADH) and oxytocin
epinephrine and norepinephrine


10.

Adrenocorticotropic hormone (ACTH) triggers the release of _____ in response to stress. (Activity 45D)

melatonin
insulin
glucocorticoids
thymosin
parathyroid hormone


11.

_____ are the main male hormones. (Activity 45D)

Progesterones
Mineralocorticoids
Androgens
Luteinizing hormones
Estrogens


12.

What hormone promotes water retention by the kidneys? (Activity 45D)

follicle-stimulating hormone (FSH)
prolactin
antidiuretic hormone (ADH)
melatonin
glucagon


13.

Which hormone opposes the action of parathyroid hormone? (Activity 45D)

calcitonin
insulin
thyroxine
thymosin
glucagon


14.

Which hormone stimulates hormone production by the ovaries and testes? (Activity 45D)

progesterone
testosterone
glucocorticoids
luteinizing hormone (LH)
estrogens


15.

Which hormone stimulates milk production? (Activity 45D)

parathyroid hormone
mineralocorticoids
prolactin
thyroid-stimulating hormone (TSH)
thymosin



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2002 Pearson Education, Inc.,
publishing as Benjamin Cummings