Exam (elaborations)
BIOD 151 Module 6 Exam 2024 | BIOD151 M6 Exam _Graded A - Portage Learning
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- BIOD 151
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- Portage Learning
BIOD 151 Module 6 Exam 2024 | BIOD151 M6 Exam _Graded A - Portage Learning
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BIOD 151 Module 6 Exam1. 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
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,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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