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BIOD 151 Module 6 Exam 2024 | BIOD151 M6 Exam _Graded A - Portage Learning

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biod 151 module 6 exam 2024

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BIOD 151 Module 6 Exam

1. Explain two reasons why a woman with low levels of LH would not be

able to become pregnant.: Ans- (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.

2. Would you expect a female to have testosterone in their bloodstream?

Explain why or why not.: Ans- (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.

3. Label the endocrine

glands (A-D) A: B: C:

D: : Ans- A: Thyroid gland B: Adrenal

gland C: Kidney D: Pancreas

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,4. 3. Label the endocrine glands (A-C): Ans- A: Pineal gland B:

Hypothalamus C: Pituitary gland

5. Explain the concept of negative feedback and how it helps to maintain

homeostasis.: Ans- 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

6. 4. Explain the concept of positive feedback. Give an example of a

hormone that works through positive feedback.: Ans- 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.

7. This type of hormone is derived from cholesterol:

A. Peptide hormones
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,B. Catecholamines

C. Steroid hormones

D. Tyrosine: C

8. 5. This type of hormone is derived from proteins:

A. Peptide hormones

B. Catecholamines

C. Steroid hormones

D. Tyrosine: A

9. 6. Growth hormone

A. is most active during childhood/adolescence.

B. can cause disease if levels are not correct.

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,C. cannot affect an adult.

D. A &B: D

10. 6. Growth hormone

A. is most active during adulthood.

B. is produced by the anterior pituitary gland.

C. underproduction is called acromegaly.

D. A &C: B

11. 7. Neurosecretory cells are a part of what endocrine organ?

Thalamus Pituitary

Cerebellum

Hypothalamus: Hypothalmus

12. 7

. Neurons in the hypothalamus are called

Neurosecretory

Vasopressin

Melanocytes

Somatotropic: Neurosecretory

13. 8. Which hormone production is increased with

sunlight? MSH -melanocyte stimulating hormone
4/7

,Melatonin

Cortisol

GH -Growth hormone: MSH -melanocyte stimulating hormone

14. 8. Which hormone production is decreased with sunlight?

A. MSH -melanocyte stimulating hormone

B. melatonin

C. cortisol

D. GH -Growth hormone: B

15. 9. The posterior pituitary stores these two

hormones: ADH and LH

ADH and Oxytocin

LH and FSH

TSH and Prolactin: ADH and Oxytocin

16. 9. The posterior pituitary stores these two

hormones: ADH and Prolactin

TSH and LH

LH and FSH

ADH and Oxytocin: ADH and Oxytocin

17.10. List the hormone(s) that best describes the statement below: I lower

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, the level of calcium in the blood by depositing calcium into bone.:

Calcitonin

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