BIOD 151 EXAM SCRIPT VERSION 1 2 2026
PORTAGE LEARNING FULL SOLUTIONS
GRADED A+
⩥ Would you expect a female to have testosterone in their bloodstream?
Explain why or why not.
Answer: (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.
⩥ Label the endocrine glands (A-D) A: ______________ B:
______________ C: ______________ D: ______________
Answer: A: Thyroid gland B: Adrenal gland C: Kidney D: Pancreas
⩥ 3. Label the endocrine glands (A-C)
Answer: A: Pineal gland B: Hypothalamus C: Pituitary gland
⩥ Explain the concept of negative feedback and how it helps to maintain
homeostasis.
Answer: 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
⩥ 4. Explain the concept of positive feedback. Give an example of a
hormone that works through positive feedback.
Answer: 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.
⩥ This type of hormone is derived from cholesterol:
A. Peptide hormones
B. Catecholamines
C. Steroid hormones
D. Tyrosine
Answer: C
⩥ 5. This type of hormone is derived from proteins:
A. Peptide hormones
B. Catecholamines
C. Steroid hormones
PORTAGE LEARNING FULL SOLUTIONS
GRADED A+
⩥ Would you expect a female to have testosterone in their bloodstream?
Explain why or why not.
Answer: (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.
⩥ Label the endocrine glands (A-D) A: ______________ B:
______________ C: ______________ D: ______________
Answer: A: Thyroid gland B: Adrenal gland C: Kidney D: Pancreas
⩥ 3. Label the endocrine glands (A-C)
Answer: A: Pineal gland B: Hypothalamus C: Pituitary gland
⩥ Explain the concept of negative feedback and how it helps to maintain
homeostasis.
Answer: 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
⩥ 4. Explain the concept of positive feedback. Give an example of a
hormone that works through positive feedback.
Answer: 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.
⩥ This type of hormone is derived from cholesterol:
A. Peptide hormones
B. Catecholamines
C. Steroid hormones
D. Tyrosine
Answer: C
⩥ 5. This type of hormone is derived from proteins:
A. Peptide hormones
B. Catecholamines
C. Steroid hormones
