BIOL 546; Exam 3 questions with
complete solutions 2025/2026
Fill in the blank: Insulin is a (1) hormone, which means that it effects target cells by (2) - correct
answer ✔✔1: Peptide
2: Binding to receptor triggering second messenger.
Negative feedback plays a role in secretion of which of these hormones - correct answer
✔✔PTH, Insulin, T3 & T4, Cortisol
Which of these sets of hormones is regulated by a very similar mechanism to the regulation of
T3? - correct answer ✔✔CRH, ACTH, and cortisol
Which of these pituitary glands is NOT released in response to a releasing hormone from the
hypothalamus. - correct answer ✔✔ADH
Which of these is true of the adrenal medulla? - correct answer ✔✔Functions as part of the
sympathetic nervous system
Calcitonin causes which of these? - correct answer ✔✔Causes bones to take up Ca++ and
secretion of Ca++ by the kidneys
The hormone (1) is a modified amino acid, where as (2) is a steroidal hormone. - correct answer
✔✔1: Epinephrine
2: testosterone
, Which of these is the mechanism used by lipid soluble hormones to affect their target cells? -
correct answer ✔✔Diffuse through membrane an act directly on gene expression
Which of these is a neurosecretory organ rather than a true endocrine gland? - correct answer
✔✔Posterior pituitary
Which of these is true glucagon? - correct answer ✔✔Triggers processes that tend to increase
blood glucose concentration
In the common form of diabetes mellitus, type II, which of these is true? - correct answer
✔✔Insulin is produced but tissues dont respond to it.
the hormone that stimulates incorporation of additional glucose transporters the cell
membrane is - correct answer ✔✔insulin
a goiter is a symptom of a - correct answer ✔✔thyroid disorder
The action of the growth hormone can be summarized as follows: - correct answer ✔✔anti-
insulin effect
Which hormone of the intestinal phase inhibits gastric secretion? - correct answer ✔✔Secretin
Although most of the (1) in the small intestine are secreted by the pancreas (2) are secreted by
the liver. - correct answer ✔✔1: digestive enzymes
2: bile salts
Which of these does NOT play a role in lipid digestion and absorption - correct answer ✔✔cell
surface receptors or transporters on villi cells
complete solutions 2025/2026
Fill in the blank: Insulin is a (1) hormone, which means that it effects target cells by (2) - correct
answer ✔✔1: Peptide
2: Binding to receptor triggering second messenger.
Negative feedback plays a role in secretion of which of these hormones - correct answer
✔✔PTH, Insulin, T3 & T4, Cortisol
Which of these sets of hormones is regulated by a very similar mechanism to the regulation of
T3? - correct answer ✔✔CRH, ACTH, and cortisol
Which of these pituitary glands is NOT released in response to a releasing hormone from the
hypothalamus. - correct answer ✔✔ADH
Which of these is true of the adrenal medulla? - correct answer ✔✔Functions as part of the
sympathetic nervous system
Calcitonin causes which of these? - correct answer ✔✔Causes bones to take up Ca++ and
secretion of Ca++ by the kidneys
The hormone (1) is a modified amino acid, where as (2) is a steroidal hormone. - correct answer
✔✔1: Epinephrine
2: testosterone
, Which of these is the mechanism used by lipid soluble hormones to affect their target cells? -
correct answer ✔✔Diffuse through membrane an act directly on gene expression
Which of these is a neurosecretory organ rather than a true endocrine gland? - correct answer
✔✔Posterior pituitary
Which of these is true glucagon? - correct answer ✔✔Triggers processes that tend to increase
blood glucose concentration
In the common form of diabetes mellitus, type II, which of these is true? - correct answer
✔✔Insulin is produced but tissues dont respond to it.
the hormone that stimulates incorporation of additional glucose transporters the cell
membrane is - correct answer ✔✔insulin
a goiter is a symptom of a - correct answer ✔✔thyroid disorder
The action of the growth hormone can be summarized as follows: - correct answer ✔✔anti-
insulin effect
Which hormone of the intestinal phase inhibits gastric secretion? - correct answer ✔✔Secretin
Although most of the (1) in the small intestine are secreted by the pancreas (2) are secreted by
the liver. - correct answer ✔✔1: digestive enzymes
2: bile salts
Which of these does NOT play a role in lipid digestion and absorption - correct answer ✔✔cell
surface receptors or transporters on villi cells
