BIOD 151 MODULE 6
EXAM QUESTIONS AND
CORRECT ANSWERS
2024/2025 GRADED A+.
1/
11
, i. Explain two reasons why a woman with low levels of LH would not be able to become pregnant.: (1) LH acts on
the ovary to cause ovulation to occur. (2) LH causes progesterone release to facilitate potential fertilization of the egg
and pregnancy. Progesterone is a key hormone for the maintenance of pregnancy.
ii. Would you expect a female to have testosterone in their bloodstream? Explain why or why not.: (1) Yes. Both
male and female bodies produce "all" the sex hormones. However, the ratios are different. (2) The adrenal glands are
largely responsible for producing this "opposite" hormone that the ovaries would not.
iii. Label the endocrine glands (A-D) A: B: C:
D: : A:Thyroid gland B: Adrenal gland C: Kidney D: Pancreas
iv. 3. Label the endocrine glands (A-C): A: Pineal gland B: Hypothalamus C: Pituitary gland
v. Explain the concept of negative feedback and how it helps to maintain homeostasis.: 1- The effect or increased
level of the hormone acts to shut down the con!nued release of the hormone. 2- The brain is constantly monitoring hormone
levels to keep levels within a certain range or set-point (homeostasis). Nega!ve feedback is a way of "turning off"
hormone produc!on when the desired level is achieved
vi. 4. Explain the concept of positive feedback. Give an example of a hormone that works through positive
feedback.: 1- Positive feedback is the action of a hormone increasing the production of that hormone. (This is the opposite
of negative feedback). 2- One example is the action of oxytocin causing the uterus to contract during labor. Oxytocin
enhances the effect of the uterus contractions, causing more oxytocin to be released. The positive feedback loop is stopped
once the baby is born and the uterus no longer needs to contract, stopping the production of oxytocin.
vii. This type of hormone is derived from cholesterol:
A. Peptide hormones
B. Catecholamines
C. Steroid hormones
D. Tyrosine: C
viii. 5. This type of hormone is derived from proteins:
A. Peptide hormones
B. Catecholamines
C. Steroid hormones
D. Tyrosine: A
ix. 6. Growth hormone
A. is most active during childhood/adolescence.
B. can cause disease if levels are not correct.
2/
11
EXAM QUESTIONS AND
CORRECT ANSWERS
2024/2025 GRADED A+.
1/
11
, i. Explain two reasons why a woman with low levels of LH would not be able to become pregnant.: (1) LH acts on
the ovary to cause ovulation to occur. (2) LH causes progesterone release to facilitate potential fertilization of the egg
and pregnancy. Progesterone is a key hormone for the maintenance of pregnancy.
ii. Would you expect a female to have testosterone in their bloodstream? Explain why or why not.: (1) Yes. Both
male and female bodies produce "all" the sex hormones. However, the ratios are different. (2) The adrenal glands are
largely responsible for producing this "opposite" hormone that the ovaries would not.
iii. Label the endocrine glands (A-D) A: B: C:
D: : A:Thyroid gland B: Adrenal gland C: Kidney D: Pancreas
iv. 3. Label the endocrine glands (A-C): A: Pineal gland B: Hypothalamus C: Pituitary gland
v. Explain the concept of negative feedback and how it helps to maintain homeostasis.: 1- The effect or increased
level of the hormone acts to shut down the con!nued release of the hormone. 2- The brain is constantly monitoring hormone
levels to keep levels within a certain range or set-point (homeostasis). Nega!ve feedback is a way of "turning off"
hormone produc!on when the desired level is achieved
vi. 4. Explain the concept of positive feedback. Give an example of a hormone that works through positive
feedback.: 1- Positive feedback is the action of a hormone increasing the production of that hormone. (This is the opposite
of negative feedback). 2- One example is the action of oxytocin causing the uterus to contract during labor. Oxytocin
enhances the effect of the uterus contractions, causing more oxytocin to be released. The positive feedback loop is stopped
once the baby is born and the uterus no longer needs to contract, stopping the production of oxytocin.
vii. This type of hormone is derived from cholesterol:
A. Peptide hormones
B. Catecholamines
C. Steroid hormones
D. Tyrosine: C
viii. 5. This type of hormone is derived from proteins:
A. Peptide hormones
B. Catecholamines
C. Steroid hormones
D. Tyrosine: A
ix. 6. Growth hormone
A. is most active during childhood/adolescence.
B. can cause disease if levels are not correct.
2/
11
