Question 1

Match the following.
-target

Accepted Answer

A)  a site on a cell that interacts with some external chemical messenger in order to enable a response to occur
B)  a chemical messenger that is produced in the nervous system
C)  the intended site of a specific chemical reaction
D)  a substance introduced from outside the body that alters some body function
E)  an example of a polypeptide hormoneF) a molecule within a cell that is released in response to the interaction of a hormone or neurotransmitter with a receptor outside the cellG) a chemical messenger that is produced in the endocrine system and indirectly regulates biochemical processesH) an example of a steroid hormoneI) an example of an amino acid hormone

Question 2

Chemical messengers that are produced by the endocrine system and circulate in the bloodstream are

Accepted Answer

A)  enzymes.
B)  antibodies.
C)  hormones.
D)  neurotransmitters.
E)  neuropeptides.

Question 3

Which of the following hormones are involved in counteracting inflammation?

Accepted Answer

A)  cortisone
B)  epinephrine
C)  vasopressin
D)  testosterone
E)  estrogen

Question 4

Match the following.
-hormone

Accepted Answer

A)  a site on a cell that interacts with some external chemical messenger in order to enable a response to occur
B)  a chemical messenger that is produced in the nervous system
C)  the intended site of a specific chemical reaction
D)  a substance introduced from outside the body that alters some body function
E)  an example of a polypeptide hormoneF) a molecule within a cell that is released in response to the interaction of a hormone or neurotransmitter with a receptor outside the cellG) a chemical messenger that is produced in the endocrine system and indirectly regulates biochemical processesH) an example of a steroid hormoneI) an example of an amino acid hormone

Question 5

Vasopressin is an example of which type of hormone?

Accepted Answer

A)  polypeptide
B)  amino acid
C)  steroid
D)  polyatomic
E)  none of the above

Question 6

Monoamine oxidase inhibitors are good antidepressants because they

Accepted Answer

A)  activate receptor sites.
B)  block receptor sites.
C)  increase the concentration of monoamine neurotransmitters.
D)  decrease the concentration of monoamine neurotransmitters.
E)  none of the above

Question 7

Which of the following hormones must deliver its signal using the "second-messenger" mechanism?

Accepted Answer

A)  estradiol
B)  testosterone
C)  vasopressin
D)  progesterone
E)  androsterone

Question 8

Depression is known to be caused by a deficiency of

Accepted Answer

A)  serotonin.
B)  dopamine.
C)  norepinephrine.
D)  all of the above

Question 9

Which descriptions are true of hormones?
I.produced by the nervous system
II.transported in the blood stream
III.interact with any cell having the appropriate receptor
IV.act within 1 second or less after release
V.effects may last several hours or days

Accepted Answer

A)  I,II,III
B)  II,III,V
C)  I,III,V
D)  I and IV
E)  none of these

Question 10

One example of an amino acid derivative that acts as both a hormone and a neurotransmitter is

Accepted Answer

A)  epinephrine.
B)  thyroxine.
C)  growth hormone (GH) .
D)  estrogen.
E)  cortisone.

Question 11

A drug that behaves as an antagonist affects a receptor cell by

Accepted Answer

A)  irreversibly binding to the targeted receptor site,preventing any response.
B)  prolonging the response of the receptor cell.
C)  blocking the response of the receptor cell.
D)  speeding up the response of the receptor cell.
E)  hydrolyzing the proteins involved in the receptor site.

Question 12

Which type of hormone actually enters the target cell?

Accepted Answer

A)  amino acid derivatives
B)  enzymes
C)  peptides
D)  steroids
E)  zymogens

Question 13

An agonist that in low doses is a stimulant used in the manufacturing of tobacco is

Accepted Answer

A)  atropine.
B)  botulinum toxin.
C)  venom.
D)  nicotine.
E)  tubocurarine.

Question 14

Which statement regarding polypeptide hormones is incorrect?

Accepted Answer

A)  This class of hormones includes all the regulatory hormones produced by the pituitary gland.
B)  Vasopressin is an example.
C)  Insulin is an example.
D)  Sex hormones are included in this category.
E)  Many of the names include the terms "releasing hormone" or "stimulating hormone."

Question 15

Chemical messengers that carry signals between neurons are

Accepted Answer

A)  enzymes.
B)  antibodies.
C)  hormones.
D)  neurotransmitters.
E)  neuropeptides.

Question 16

Which of the following hormones are involved in the retention of water and blood pressure?

Accepted Answer

A)  thyroxine
B)  epinephrine
C)  vasopressin
D)  testosterone
E)  estrogen

Question 17

Describe in detail the two ways in which a hormone can deliver its message to a target cell.What characteristics of the hormone determine which mechanism is used?

Accepted Answer

Because they are largely non-polar and h...

Question 18

The molecule or molecules that interacts with a hormone or other biologically active molecule to initiate a cellular response is called a(n)

Accepted Answer

A)  receptor.
B)  transmitter.
C)  active site.
D)  target cell.

Question 19

Mineralocorticoids are a specific type of steroid whose function is to

Accepted Answer

A)  maintain pregnancy.
B)  promote development of secondary male sex characteristics.
C)  promote development of secondary female sex characteristics.
D)  regulate the sodium/potassium balance in cellular fluids.
E)  regulate glucose metabolism.

Question 20

The major chemical structures of hormones include

Accepted Answer

A)  polysaccharides,esters,and steroids.
B)  steroids,polypeptides,and amino acid derivatives.
C)  steroids,amino acid derivatives,and esters.
D)  only molecules containing amine groups.
E)  only steroids.

Exam 28: Chemical Messengers: Hormones, neurotransmitters, and Drugs

Chemical messengers that carry signals between neurons are

Correct AnswerverifiedShow Answer

The molecule or molecules that interacts with a hormone or other biologically active molecule to initiate a cellular response is called a(n)

Correct AnswerverifiedShow Answer

Match the following. -target

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A drug that behaves as an antagonist affects a receptor cell by

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Which type of hormone actually enters the target cell?

Correct AnswerverifiedShow Answer

Which of the following hormones are involved in the retention of water and blood pressure?

Correct AnswerverifiedShow Answer

The major chemical structures of hormones include

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Depression is known to be caused by a deficiency of

Correct AnswerverifiedShow Answer

Chemical messengers that are produced by the endocrine system and circulate in the bloodstream are

Correct AnswerverifiedShow Answer

Vasopressin is an example of which type of hormone?

Correct AnswerverifiedShow Answer

Match the following. -hormone

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Which descriptions are true of hormones? I.produced by the nervous system II.transported in the blood stream III.interact with any cell having the appropriate receptor IV.act within 1 second or less after release V.effects may last several hours or days

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Which of the following hormones must deliver its signal using the "second-messenger" mechanism?

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Which of the following hormones are involved in counteracting inflammation?

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One example of an amino acid derivative that acts as both a hormone and a neurotransmitter is

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Which statement regarding polypeptide hormones is incorrect?

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Mineralocorticoids are a specific type of steroid whose function is to

Correct AnswerverifiedShow Answer

Describe in detail the two ways in which a hormone can deliver its message to a target cell.What characteristics of the hormone determine which mechanism is used?

Correct AnswerverifiedBecause they are largely non-polar and h...View AnswerShow Answer

Monoamine oxidase inhibitors are good antidepressants because they

Correct AnswerverifiedShow Answer

An agonist that in low doses is a stimulant used in the manufacturing of tobacco is

Correct AnswerverifiedShow Answer

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Because they are largely non-polar and h...
View Answer

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