Question 1

The analytical method that provides better analytical sensitivity in hormone detection than other methods such as immunoassay or receptor-based assays is:

Accepted Answer

A)   tandem mass spectrometry.
B)   bioassay.
C)   immunometric assay.
D)   spectrophotometry.

Question 2

An example of a protein hormone synthesized in the hypothalamus,with the principal action to control the release of thyroid-stimulating hormone,is:

Accepted Answer

A)   prolactin.
B)   thyroid stimulating hormone.
C)   ACTH.
D)   thyrotropin releasing hormone. D

Question 3

Considering the classification of hormones by structure,an example of a steroid hormone would be:

Accepted Answer

A)   testosterone.
B)   parathyroid hormone (PTH) .
C)   cortisol.
D)   all of the above.

Question 4

An example of a polypeptide hormone that is part of the complex integrative function of many hormones involved in development of the human organism is:

Accepted Answer

A)   growth hormone.
B)   estrogen.
C)   cortisol.
D)   thyroxine.

Question 5

Which one of the following statements concerning protein hormones is correct?

Accepted Answer

A)   A protein hormone binds to a receptor within the cell or on the nucleus of the cell,thereby directly affecting protein synthesis.
B)   A protein hormone,once bound to its receptor,activates adenylyl cyclase,which leads to eventual phosphorylation of other cellular enzymes.
C)   The complex of protein hormone/receptor diffuses into the cell nucleus and has a suppressing effect on RNA synthesis.
D)   All protein hormones are bound to a transport protein to move through the circulation. B

Question 6

Binding to a receptor at the outer cell membrane to induce phosphorylation via adenylyl cyclase and cAMP of certain intracellular enzymes is a property of which class of hormone?

Accepted Answer

A)   Protein
B)   Steroid
C)   Amino acid-derived
D)   Both a and c

Question 7

Which one of the following statements concerning steroid hormones is correct?

Accepted Answer

A)   Steroid hormones attach to a receptor on the surface of a cell,which eventually induces enzyme phosphorylation within the cell.
B)   Steroid hormones are hydrophobic when free and bind to intracellular receptors in the nucleus.
C)   Steroid hormones,because of their structure,are not bound to carrier proteins as they circulate in the blood.
D)   Steroid hormones have a very short half-life (usually <30 minutes) in the circulation.

Question 8

Calcium concentration in the blood is regulated by which of the following hormones?

Accepted Answer

A)   Calcitriol
B)   Parathyroid hormone
C)   Cortisol
D)   Both a and b

Question 9

As part of homeostatic control by hormones,the metabolism of electrolytes and water balance is controlled in part by the renal system.What hormone synthesized by the kidneys affects water and electrolyte balance?

Accepted Answer

A)   Aldosterone
B)   Renin
C)   Vasopressin; antidiuretic hormone (ADH) 
D)   Insulin

Question 10

Which of the following is an effect of increased parathyroid hormone (PTH) secretion from the parathyroid gland in the homeostatic control of serum calcium?

Accepted Answer

A)   Decreased blood calcium levels
B)   Increased renal absorption of phosphate
C)   Decreased bone calcium efflux from the skeleton
D)   Increased intestinal absorption of calcium D

Question 11

Which of the following protein hormones produces a decrease in blood glucose by causing glucose to enter cells for energy production?

Accepted Answer

A)   Insulin
B)   Aldosterone
C)   Thyroid hormone
D)   Cortisol

Question 12

The half-life of a protein hormone in plasma is:

Accepted Answer

A)   long,usually greater than 90 minutes.
B)   long,at least 24 hours.
C)   short,more than 1 hour but less than 3 hours.
D)   short,approximately 10 to 30 minutes.

Question 13

Which one of the following hormones requires a transport protein to move it through the circulation?

Accepted Answer

A)   Prolactin
B)   Aldosterone
C)   Estrogen
D)   Parathyroid hormone

Question 14

The release of thyroid-stimulating hormone (from the pituitary gland) stimulates the release of thyroid hormones from the thyroid gland.When the level of thyroid hormones increases in the circulation,they shut off the release of TSH from the pituitary.This is an example of which type of feedback?

Accepted Answer

A)   Open loop feedback
B)   Positive feedback
C)   Negative feedback
D)   None of the above

Question 15

A group of hormones produced by the gastrointestinal tract that stimulates insulin secretion from the pancreas and slows the rate of gastric emptying is referred to as:

Accepted Answer

A)   incretins.
B)   insulinomas.
C)   calcitriols.
D)   steroids.

Exam 25: Hormones

The analytical method that provides better analytical sensitivity in hormone detection than other methods such as immunoassay or receptor-based assays is:

Correct Answer
verified

An example of a protein hormone synthesized in the hypothalamus,with the principal action to control the release of thyroid-stimulating hormone,is:

Correct Answer
verified
D

Considering the classification of hormones by structure,an example of a steroid hormone would be:

Correct Answer
verified

An example of a polypeptide hormone that is part of the complex integrative function of many hormones involved in development of the human organism is:

Correct Answer
verified

Which one of the following statements concerning protein hormones is correct?

Correct Answer
verified
B

Binding to a receptor at the outer cell membrane to induce phosphorylation via adenylyl cyclase and cAMP of certain intracellular enzymes is a property of which class of hormone?

Correct Answer
verified

Which one of the following statements concerning steroid hormones is correct?

Correct Answer
verified

Calcium concentration in the blood is regulated by which of the following hormones?

Correct Answer
verified

As part of homeostatic control by hormones,the metabolism of electrolytes and water balance is controlled in part by the renal system.What hormone synthesized by the kidneys affects water and electrolyte balance?

Correct Answer
verified

Which of the following is an effect of increased parathyroid hormone (PTH) secretion from the parathyroid gland in the homeostatic control of serum calcium?

Correct Answer
verified
D

Which of the following protein hormones produces a decrease in blood glucose by causing glucose to enter cells for energy production?

Correct Answer
verified

The half-life of a protein hormone in plasma is:

Correct Answer
verified

Which one of the following hormones requires a transport protein to move it through the circulation?

Correct Answer
verified

The release of thyroid-stimulating hormone (from the pituitary gland) stimulates the release of thyroid hormones from the thyroid gland.When the level of thyroid hormones increases in the circulation,they shut off the release of TSH from the pituitary.This is an example of which type of feedback?

Correct Answer
verified

A group of hormones produced by the gastrointestinal tract that stimulates insulin secretion from the pancreas and slows the rate of gastric emptying is referred to as:

Correct Answer
verified

Exam 25: Hormones

The analytical method that provides better analytical sensitivity in hormone detection than other methods such as immunoassay or receptor-based assays is:

Correct AnswerverifiedShow Answer

An example of a protein hormone synthesized in the hypothalamus,with the principal action to control the release of thyroid-stimulating hormone,is:

Correct AnswerverifiedD

Considering the classification of hormones by structure,an example of a steroid hormone would be:

Correct AnswerverifiedShow Answer

An example of a polypeptide hormone that is part of the complex integrative function of many hormones involved in development of the human organism is:

Correct AnswerverifiedShow Answer

Which one of the following statements concerning protein hormones is correct?

Correct AnswerverifiedB

Binding to a receptor at the outer cell membrane to induce phosphorylation via adenylyl cyclase and cAMP of certain intracellular enzymes is a property of which class of hormone?

Correct AnswerverifiedShow Answer

Which one of the following statements concerning steroid hormones is correct?

Correct AnswerverifiedShow Answer

Calcium concentration in the blood is regulated by which of the following hormones?

Correct AnswerverifiedShow Answer

As part of homeostatic control by hormones,the metabolism of electrolytes and water balance is controlled in part by the renal system.What hormone synthesized by the kidneys affects water and electrolyte balance?

Correct AnswerverifiedShow Answer

Which of the following is an effect of increased parathyroid hormone (PTH) secretion from the parathyroid gland in the homeostatic control of serum calcium?

Correct AnswerverifiedD

Which of the following protein hormones produces a decrease in blood glucose by causing glucose to enter cells for energy production?

Correct AnswerverifiedShow Answer

The half-life of a protein hormone in plasma is:

Correct AnswerverifiedShow Answer

Which one of the following hormones requires a transport protein to move it through the circulation?

Correct AnswerverifiedShow Answer

The release of thyroid-stimulating hormone (from the pituitary gland) stimulates the release of thyroid hormones from the thyroid gland.When the level of thyroid hormones increases in the circulation,they shut off the release of TSH from the pituitary.This is an example of which type of feedback?

Correct AnswerverifiedShow Answer

A group of hormones produced by the gastrointestinal tract that stimulates insulin secretion from the pancreas and slows the rate of gastric emptying is referred to as:

Correct AnswerverifiedShow Answer

Correct Answer
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D

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B

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D

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