1
Bio
BIO 669 QUIZ 3 QUESTIONS & VERIFIED
ANSWERS| GRADE A| 100% CORRECT
(NEW 2024/ 2025 UPDATE)
what does insulin do to adiposecytes? - ANS ✓increase fatty acids and
triglyceride synthesis and decrease the breakdown of fatty acids in adipocytes.
stimulates fat production=adipocytes get bigger
what does amylin do? - ANS ✓delays nutrient uptake and suppresses glucagon
after meals so we don't have a blood sugar spike
what does insulin do to protein? - ANS ✓enhance protein synthesis and
decrease protein break down
what does glucocorticosteroids do for protein? - ANS ✓disrupts protein
synthesis and increases the break down of proteins
What does the adrenal cortex secrete? - ANS ✓aldosterone, cortisol,
androgens
Bio 669
, 2
Bio
When does negative feedback occur? - ANS ✓occurs when a changing
chemical, neural, and endocrine response to a stimulus decreases synthesis and
secretion of a hormone.
wants to stay within a parameter
what is down-regulation? - ANS ✓excess amount of a hormone has an effect
that decreases the cells and/or the cell receptor affinities available for that
hormone
large amount of hormones= decrease in receptors, less effect.
what is up-regulation? - ANS ✓decreased amounts of a hormone, causes the cell
to increase the number of receptors available to make the cell more sensitized
the cell to that hormone and it's effects
small amount of hormones= increase in receptors to attach to.
what is the most common operating system for hormones? - ANS ✓negative-
feedback loop
When does positive feedback occur? - ANS ✓occurs when a chemical, neural,
or endocrine response increases the synthesis and secretion of a hormone.
Bio 669
, 3
Bio
what are direct effects? - ANS ✓the hormone will directly cause that cell to do
it's job
what is permissive effects? - ANS ✓hormones that enable a second hormone so
that it can become more functional/ better suited to do it's job
what is the function of target cells and hormone receptors? - ANS ✓1. to
recognize and bind specifically and with high affinity to their particular
hormones
2. to initiate a signal to appropriate intercellular effectors
What is up-regulation? - ANS ✓low concentrations of hormone increase the
number or affinity of receptors per cell
What is down-regulation? - ANS ✓high concentrations of hormone decrease
the number or affinity of receptors per cell.
where are hormone receptors located? - ANS ✓in the plasma membrane or in
the intracellular compartment of the target cell
what does diurnal mean? - ANS ✓released 2 times a day
Bio 669
Bio
BIO 669 QUIZ 3 QUESTIONS & VERIFIED
ANSWERS| GRADE A| 100% CORRECT
(NEW 2024/ 2025 UPDATE)
what does insulin do to adiposecytes? - ANS ✓increase fatty acids and
triglyceride synthesis and decrease the breakdown of fatty acids in adipocytes.
stimulates fat production=adipocytes get bigger
what does amylin do? - ANS ✓delays nutrient uptake and suppresses glucagon
after meals so we don't have a blood sugar spike
what does insulin do to protein? - ANS ✓enhance protein synthesis and
decrease protein break down
what does glucocorticosteroids do for protein? - ANS ✓disrupts protein
synthesis and increases the break down of proteins
What does the adrenal cortex secrete? - ANS ✓aldosterone, cortisol,
androgens
Bio 669
, 2
Bio
When does negative feedback occur? - ANS ✓occurs when a changing
chemical, neural, and endocrine response to a stimulus decreases synthesis and
secretion of a hormone.
wants to stay within a parameter
what is down-regulation? - ANS ✓excess amount of a hormone has an effect
that decreases the cells and/or the cell receptor affinities available for that
hormone
large amount of hormones= decrease in receptors, less effect.
what is up-regulation? - ANS ✓decreased amounts of a hormone, causes the cell
to increase the number of receptors available to make the cell more sensitized
the cell to that hormone and it's effects
small amount of hormones= increase in receptors to attach to.
what is the most common operating system for hormones? - ANS ✓negative-
feedback loop
When does positive feedback occur? - ANS ✓occurs when a chemical, neural,
or endocrine response increases the synthesis and secretion of a hormone.
Bio 669
, 3
Bio
what are direct effects? - ANS ✓the hormone will directly cause that cell to do
it's job
what is permissive effects? - ANS ✓hormones that enable a second hormone so
that it can become more functional/ better suited to do it's job
what is the function of target cells and hormone receptors? - ANS ✓1. to
recognize and bind specifically and with high affinity to their particular
hormones
2. to initiate a signal to appropriate intercellular effectors
What is up-regulation? - ANS ✓low concentrations of hormone increase the
number or affinity of receptors per cell
What is down-regulation? - ANS ✓high concentrations of hormone decrease
the number or affinity of receptors per cell.
where are hormone receptors located? - ANS ✓in the plasma membrane or in
the intracellular compartment of the target cell
what does diurnal mean? - ANS ✓released 2 times a day
Bio 669
