Question 1

Match the description with the type of receptor model.
-Membrane channels may be opened or closed

Accepted Answer

A)  Nuclear receptor model
B)  Membrane-bound receptor modelC) A) and B)
D) undefined

Question 2

Parathyroid hormone is released when blood calcium levels decrease. This is an example of control by ________ stimuli.

Accepted Answer

A)   hormonal
B)   neural
C)   humoral
D)   visceralE) All of the above
F) C) and D)

Question 3

In ________, a cell increases the number of hormone receptors and becomes more sensitive to the hormone.

Accepted Answer

A)   amplification
B)   positive feedback
C)   down-regulation
D)   up-regulationE) None of the above
F) A) and B)

Question 4

An intercellular chemical signal that is produced by neurons but functions like a hormone would be called a ________.

Accepted Answer

A)   neuropathogen
B)   neurotransmitter
C)   neurocrine
D)   neuropeptide
E)   neurosynthesizerF) B) and C)
G) None of the above

Question 5

Which of the following hormones is most likely to bind to intracellular receptors?

Accepted Answer

A)   Growth hormone (GH) , a complex protein
B)   Insulin, a large peptide hormone
C)   Aldosterone, a cholesterol-based hormoneD) None of the above
E) A) and C)

Question 6

Hormone A is a large protein composed of several polypeptides. Hormone B is a small fatty acid derivative. Which of the following statement correctly predicts the way these hormones interact with their target cells?

Accepted Answer

A)   Hormone A would bind to a membrane-bound receptor, while hormone B would bind to an intracellular receptor.
B)   Hormone A would bind to an intracellular receptor, while hormone B would bind to a membrane-bound receptor.
C)   Hormone A and hormone B would bind to membrane-bound receptors.
D)   Hormone A and hormone B would bind to intracellular receptors.E) B) and D)
F) A) and C)

Question 7

Considering the following events in the nuclear receptor model, identify which of these events occurs in the nucleus.
(1)  Hormone receptor complex binds to DNA.
(2)  Messenger RNA directs synthesis of specific proteins.
(3)  Hormone binds to receptors in the nucleus (sometimes in the cytoplasm) .
(4)  Messenger RNA synthesis is activated.
(5)  Synthesized proteins produce the response of the cell.

Accepted Answer

A)   1, 3, 5
B)   1, 3, 4
C)   1, 2, 3
D)   3, 4, 5
E)   All events occur in the nucleus.F) C) and E)
G) A) and E)

Question 8

Which of the following events occurs last?

Accepted Answer

A)   IP3 (inositol triphosphate)  is produced.
B)   Epinephrine combines with membrane-bound receptor on smooth muscle cell.
C)   Calmodulin binds to the enzyme that phosphorylates myosin and cross-bridges form.
D)   IP3 stimulates Ca2+ release from the endoplasmic reticulum.
E)   Ca2+ binds with calmodulin.F) A) and C)
G) B) and E)

Question 9

The length of time needed to eliminate half of a dose of a hormone is called its ________.

Accepted Answer

The answer of The length of time needed to eliminate...

Question 10

The half-life of a hormone allows one to determine

Accepted Answer

A)   the rate of hormone secretion.
B)   the identity of a hormone.
C)   the rate at which hormones are eliminated from the body.
D)   the rate of action of a hormone.
E)   the rate of travel through the blood to a target.F) B) and E)
G) A) and C)

Question 11

Given the following list of organic molecules, which includes hormones? 1)  Nucleic acid derivatives 2)  Polypeptides 3)  Steroids 4)  Proteins

Accepted Answer

A)   1, 3, 4
B)   1, 2, 3
C)   2, 3, 4
D)   1, 2, 3, 4
E)   1, 2, 4F) C) and D)
G) B) and E)

Question 12

Which of the following is not a shared characteristic of endocrine and exocrine glands?

Accepted Answer

A)   Secretions are released through ducts onto an epithelial surface
B)   Manufacture substances that are released from cells of the gland
C)   Composed of epithelial tissue
D)   None of the choices are correct.E) B) and C)
F) A) and D)

Question 13

Increasing levels of thyroid hormones decrease TSH levels. This is an example of ________ feedback.

Accepted Answer

The answer of Increasing levels of thyroid hormones decrease TSH...

Question 14

Arrange the following events in proper sequence:
(1)  The activating hormone interacts with a membrane-bound receptor.
(2)  Cyclic AMP causes the cell to carry out a function characteristic for that specific hormone.
(3)  Adenylyl cyclase catalyzes the transformation of ATP to cyclic AMP.
(4)  Adenylyl cyclase is activated.

Accepted Answer

A)   1, 2, 3, 4
B)   1, 4, 3, 2
C)   3, 4, 2, 1
D)   1, 3, 2, 4
E)   1, 3, 4, 2F) A) and D)
G) B) and E)

Question 15

Match the description with the type of receptor model.
-Intracellular mediator

Accepted Answer

A)  Nuclear receptor model
B)  Membrane-bound receptor modelC) A) and B)
D) undefined

Question 16

Which chemical type of hormone has a longer half-life?

Accepted Answer

A)   Lipid-soluble
B)   Protein
C)   Water-soluble
D)   Amino acid derivativeE) A) and C)
F) B) and D)

Question 17

Which pattern of hormone secretion, exemplified by thyroid hormones, remains relatively constant over long periods of time?

Accepted Answer

A)   Acute hormone secretion
B)   Episodic hormone secretion
C)   Chronic hormone secretion
D)   Long-term hormone secretionE) All of the above
F) B) and D)

Question 18

Match the chemical signal with the appropriate description.
-Endocrine

Accepted Answer

A)  Chemicals produced by neurons that function as hormones
B)  Chemicals that act locally on nearby cells
C)  Chemical secreted by presynaptic terminal
D)  Influences same cell type from which it is secreted
E)  Chemical secreted into blood by specialized cells; travels some distance to target tissuesF) D) and E)
G) A) and E)

Question 19

Hormones are intercellular chemical signals that

Accepted Answer

A)   are secreted into the external environment where they act.
B)   affect only non-hormone producing organs or tissues.
C)   help coordinate growth, development and reproduction.
D)   operate primarily by positive feedback.E) B) and C)
F) A) and D)

Question 20

Receptors for most water-soluble hormones are located

Accepted Answer

A)   in the cytoplasm of their target cells.
B)   on the plasma membrane of their target cells.
C)   in the lysosomes of their target cells.
D)   on the nuclear membrane of their target cells.
E)   on the endoplasmic reticulum of their target cells.F) A) and B)
G) B) and E)

Exam 17: Functional Organization of the Endocrine System

Which of the following events occurs last?

Correct Answer
verified

Given the following list of organic molecules, which includes hormones? 1) Nucleic acid derivatives 2) Polypeptides 3) Steroids 4) Proteins

Correct Answer
verified

Which chemical type of hormone has a longer half-life?

Correct Answer
verified

Which of the following is not a shared characteristic of endocrine and exocrine glands?

Correct Answer
verified

An intercellular chemical signal that is produced by neurons but functions like a hormone would be called a ________.

Correct Answer
verified

Correct Answer
verified

Receptors for most water-soluble hormones are located

Correct Answer
verified

Which of the following hormones is most likely to bind to intracellular receptors?

Correct Answer
verified

Hormones are intercellular chemical signals that

Correct Answer
verified

Parathyroid hormone is released when blood calcium levels decrease. This is an example of control by ________ stimuli.

Correct Answer
verified

Correct Answer
verified

The length of time needed to eliminate half of a dose of a hormone is called its ________.

Correct Answer
verified

In ________, a cell increases the number of hormone receptors and becomes more sensitive to the hormone.

Correct Answer
verified

The half-life of a hormone allows one to determine

Correct Answer
verified

Increasing levels of thyroid hormones decrease TSH levels. This is an example of ________ feedback.

Correct Answer
verified

Match the description with the type of receptor model. -Intracellular mediator

Correct Answer
verified

Match the description with the type of receptor model. -Membrane channels may be opened or closed

Correct Answer
verified

Match the chemical signal with the appropriate description. -Endocrine

Correct Answer
verified

Which pattern of hormone secretion, exemplified by thyroid hormones, remains relatively constant over long periods of time?

Correct Answer
verified

Hormone A is a large protein composed of several polypeptides. Hormone B is a small fatty acid derivative. Which of the following statement correctly predicts the way these hormones interact with their target cells?

Correct Answer
verified

Exam 17: Functional Organization of the Endocrine System

Which of the following events occurs last?

Correct AnswerverifiedShow Answer

Given the following list of organic molecules, which includes hormones? 1) Nucleic acid derivatives 2) Polypeptides 3) Steroids 4) Proteins

Correct AnswerverifiedShow Answer

Which chemical type of hormone has a longer half-life?

Correct AnswerverifiedShow Answer

Which of the following is not a shared characteristic of endocrine and exocrine glands?

Correct AnswerverifiedShow Answer

An intercellular chemical signal that is produced by neurons but functions like a hormone would be called a ________.

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Receptors for most water-soluble hormones are located

Correct AnswerverifiedShow Answer

Which of the following hormones is most likely to bind to intracellular receptors?

Correct AnswerverifiedShow Answer

Hormones are intercellular chemical signals that

Correct AnswerverifiedShow Answer

Parathyroid hormone is released when blood calcium levels decrease. This is an example of control by ________ stimuli.

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

The length of time needed to eliminate half of a dose of a hormone is called its ________.

Correct AnswerverifiedShow Answer

In ________, a cell increases the number of hormone receptors and becomes more sensitive to the hormone.

Correct AnswerverifiedShow Answer

The half-life of a hormone allows one to determine

Correct AnswerverifiedShow Answer

Increasing levels of thyroid hormones decrease TSH levels. This is an example of ________ feedback.

Correct AnswerverifiedShow Answer

Match the description with the type of receptor model. -Intracellular mediator

Correct AnswerverifiedShow Answer

Match the description with the type of receptor model. -Membrane channels may be opened or closed

Correct AnswerverifiedShow Answer

Match the chemical signal with the appropriate description. -Endocrine

Correct AnswerverifiedShow Answer

Which pattern of hormone secretion, exemplified by thyroid hormones, remains relatively constant over long periods of time?

Correct AnswerverifiedShow Answer

Hormone A is a large protein composed of several polypeptides. Hormone B is a small fatty acid derivative. Which of the following statement correctly predicts the way these hormones interact with their target cells?

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified