Bio 133 / Bio133 Exam 1 (Latest 2026/
2027 Update) Questions & Answers |
Grade A | 100% Correct
Which of the following is true of peptide hormones:
attach to receptors located on the outside of target cell's plasma membrane
Which of the following hormones is NOT released into the hypothalamic-pituitary portal
system?
Adrenocorticotropic hormone (ACTH)
The mechanisms of homeostasis:
maintain a relatively constant internal physiological environment regardless of the changes in the
external environment.
Which of the following physiological control mechanisms is a response to a rise in core body
temperature?
Increased blood flow to the skin (vasodilation)
An example of a properly functioning homeostatic control system is seen when:
excess salt is excreted via urine when dietary salt levels rise too high in blood
, Bio 133 / Bio133 Exam 1 (Latest 2026/
2027 Update) Questions & Answers |
Grade A | 100% Correct
Oxytocin and antidiuretic hormone (ADH) are synthesized (made) in the:
hypothalamus
If the thyroid gland was physically damaged causing it to release unusually low levels of thyroid
hormone into the blood, what would you expect the effect to be on TRH levels in the blood?
TRH would become higher than normal
If a tumor is present on the thyroid gland and causes unusually high levels of thyroid hormones
to be released into the blood, what would you expect the effect to be on TRH levels in the blood?
TRH would become lower than normal
The ___________ portal system connects the hypothalamus' blood supply with the
_____________ blood supply.
hypothalamo-hypophyseal, anterior pituitary's
What type of mechanism does the following describe: "If conditions deviate too far from a set
point (narrow range), biochemical reactions are initiated to change conditions back toward the
set point"
Negative feedback mechanism
2027 Update) Questions & Answers |
Grade A | 100% Correct
Which of the following is true of peptide hormones:
attach to receptors located on the outside of target cell's plasma membrane
Which of the following hormones is NOT released into the hypothalamic-pituitary portal
system?
Adrenocorticotropic hormone (ACTH)
The mechanisms of homeostasis:
maintain a relatively constant internal physiological environment regardless of the changes in the
external environment.
Which of the following physiological control mechanisms is a response to a rise in core body
temperature?
Increased blood flow to the skin (vasodilation)
An example of a properly functioning homeostatic control system is seen when:
excess salt is excreted via urine when dietary salt levels rise too high in blood
, Bio 133 / Bio133 Exam 1 (Latest 2026/
2027 Update) Questions & Answers |
Grade A | 100% Correct
Oxytocin and antidiuretic hormone (ADH) are synthesized (made) in the:
hypothalamus
If the thyroid gland was physically damaged causing it to release unusually low levels of thyroid
hormone into the blood, what would you expect the effect to be on TRH levels in the blood?
TRH would become higher than normal
If a tumor is present on the thyroid gland and causes unusually high levels of thyroid hormones
to be released into the blood, what would you expect the effect to be on TRH levels in the blood?
TRH would become lower than normal
The ___________ portal system connects the hypothalamus' blood supply with the
_____________ blood supply.
hypothalamo-hypophyseal, anterior pituitary's
What type of mechanism does the following describe: "If conditions deviate too far from a set
point (narrow range), biochemical reactions are initiated to change conditions back toward the
set point"
Negative feedback mechanism
