FOR 2025/2026 TESTS|MOST COMMON
QUESTIONS WITH CORRECTLY VERIFIED ANSWERS
(LATEST QUIZZES) |ALREADY A+
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Which of the following is a shared feature between nitric oxide signaling and G-protein linked
receptor signaling pathways? Both nitric oxide and G-protein linked receptor signaling pathways
involve:
a. production of a second messenger.
b. a hormone-receptor complex that acts as a transcription factor.
c.activation of a tyrosine kinase.
d. use of an intracellular receptor.
e. activation of a G-protein. - a.
Describing a physiological variable as "homeostatic," means that it:
a. has varied from the normal value, and will remain constant at the new value.
b. never varies from an exact set point value.
c. is in a state of dynamic constancy that is regulated to remain near a stable set point value.
d. is in an equilibrium state that requires no energy input to stay at the normal value.
e. has no normal range, but will just change to match the outside environmental conditions. -
c
Each of the following statements concerning peptide hormones is true EXCEPT one. Identify the
EXCEPTION.
, a. Modification of the prohormone occurs in the Golgi complex and the mature hormone is
secreted from the cell by the process of exocytosis.
b. Peptide hormones are translated as precursor molecules that are larger than the biologically
active hormone.
c. Peptide hormones are first synthesized as preprohormones.
d. Peptide hormones are translated on ribosomes attached to the rough endoplasmic reticulum.
e. Peptide hormones in the bloodstream are always bound to carrier proteins. - e.
The outer layer of the adrenal gland is called the adrenal __________.
a. appendage
b. cortex
c. medulla
d. abaxial
e. lumen - b.
Which one of the following events is most likely to occur when a catecholamine or peptide
hormone binds to a receptor?
a. all of these answers are correct.
b. the concentration of second messengers in the cytoplasm is altered to produce intracellular
effects.
c. the signal sequence is removed from the preprohormone to produce a prohormone.
d. the hormone-receptor complex enters the nucleus of the cell.
e. the hormone-receptor complex binds to DNA to activate or inactivate genes that produce
proteins that have physiological effects. - b.
Insulin and glucagon are both secreted by:
a. the kidneys