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Biology

Review Questions

BiologyReview Questions
4.

A newly discovered hormone contains four amino acids linked together. Under which chemical class would this hormone be classified?

  1. lipid-derived hormone
  2. amino acid-derived hormone
  3. peptide hormone
  4. glycoprotein
5.

Which class of hormones can diffuse through plasma membranes?

  1. lipid-derived hormones
  2. amino acid-derived hormones
  3. peptide hormones
  4. glycoprotein hormones
6.

A new antagonist molecule has been discovered that binds to and blocks plasma membrane receptors. What effect will this antagonist have on testosterone, a steroid hormone?

  1. It will block testosterone from binding to its receptor.
  2. It will block testosterone from activating cAMP signaling.
  3. It will increase testosterone-mediated signaling.
  4. It will not affect testosterone-mediated signaling.
7.

What effect will a cAMP inhibitor have on a peptide hormone-mediated signaling pathway?

  1. It will prevent the hormone from binding its receptor.
  2. It will prevent activation of a G-protein.
  3. It will prevent activation of adenylate cyclase.
  4. It will prevent activation of protein kinases.
8.

Drinking alcoholic beverages causes an increase in urine output. This most likely occurs because alcohol:

  1. inhibits ADH release
  2. stimulates ADH release
  3. inhibits TSH release
  4. stimulates TSH release
9.

FSH and LH release from the anterior pituitary is stimulated by ________.

  1. TSH
  2. GnRH
  3. T3
  4. PTH
10.

What hormone is produced by beta cells of the pancreas?

  1. T3
  2. glucagon
  3. insulin
  4. T4
11.

When blood calcium levels are low, PTH stimulates:

  1. excretion of calcium from the kidneys
  2. excretion of calcium from the intestines
  3. osteoblasts
  4. osteoclasts
12.

A rise in blood glucose levels triggers release of insulin from the pancreas. This mechanism of hormone production is stimulated by:

  1. humoral stimuli
  2. hormonal stimuli
  3. neural stimuli
  4. negative stimuli
13.

Which mechanism of hormonal stimulation would be affected if signaling and hormone release from the hypothalamus was blocked?

  1. humoral and hormonal stimuli
  2. hormonal and neural stimuli
  3. neural and humoral stimuli
  4. hormonal and negative stimuli
14.

Which endocrine glands are associated with the kidneys?

  1. thyroid glands
  2. pituitary glands
  3. adrenal glands
  4. gonads
15.

Which of the following hormones is not produced by the anterior pituitary?

  1. oxytocin
  2. growth hormone
  3. prolactin
  4. thyroid-stimulating hormone
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