UNT BIOL 2302 Final Exam Questions And 100% Solved Solutions.
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Course
BIOL 2302
Institution
BIOL 2302
Choose the term that does not belong in the following groupings.
A. Steroid Hormone
B. Protein Hormone
C. Second messenger
D. Membrane receptors - Answer A
Choose the term that does not belong in the following groupings.
A. Glucocorticoids
B. Steroids
C. Aldosterone
D. Growth Hormon...
UNT BIOL 2302 Final Exam Questions
And 100% Solved Solutions.
Choose the term that does not belong in the following groupings.
A. Steroid Hormone
B. Protein Hormone
C. Second messenger
D. Membrane receptors - Answer A
Choose the term that does not belong in the following groupings.
A. Glucocorticoids
B. Steroids
C. Aldosterone
D. Growth Hormone - Answer D
Which group of messengers is defined as acting on cells within the same tissue?
A. Autocrines
B. Hormones
C. Paracrines
D. Eicosanoids - Answer A
A major difference between neurotransmitters and hormones is that hormones reach their destinations
via
A. Direct contact on their target cell
B. Cerebrospinal fluid
C. Ducts
D. The blood - Answer D
,A major determinant of a hormone's mechanism of action is
A. Whether the hormonal molecule is hydrophobic or hydrophilic
B. its size
C. whether it is rapid acting or slow acting
D. if it activates gene activity or not - Answer A
Receptors for steroid hormones are commonly located
A. inside the target cell
B. on the plasma membrane of the target cell
C. in the blood plasma
D. in the extracellular fluid - Answer A
Interaction with a membrane-bound receptor will transduce the hormonal message via
a. depolarization
b. direct gene activation
c. a second messenger
d. endocytosis - Answer C
Second messenger-activating hormones circulate in minute quantities because
a. they are not important signal molecules
b. small concentration of hormone can activate many intracellular signals via amplification
c. they are continuously released from the gland.
d. neurotransmitters also bind to hormone receptors. - Answer B
Which of the following molecules act as second messengers
A. cAMP
b. Ca2+
c. Inositol triphosphate
d. all of the above - Answer D
,In order for a hormone to activate a target cell, the target cell must possess
a. a receptor
b. a second messenger
c. the hormone
d. a chaperone - Answer A
which of these characteristics is exclusive to the endocrine system when compared with the nervous
system
a. relies on release of chemical that bind to specific receptors
b. relies primarily on negative feedback mechanisms
c. uses epinephrine and norepinephrine as chemical messengers.
d. effective in coordinating cell, tissue, and organ activities on a sustained, long-term basis - Answer D
When the pancreas releases insulin in direct response to blood glucose, this in an example of _______
stimulation
a. humoral
b. neural
c. hormonal
d. negative feedback - Answer A
When an infant suckles at his mother's breast, the mother's neurohypophysis releases oxytocin. This is
an example of _________ stimulation.
a. humoral
b. neural
c. hormonal
d. negative feedback - Answer B
When the ovaries secrete estrogen in response to the hormone GnRH, this is an example of _________
stimulation.
, a. humoral
b. neural
c. hormonal
d. negative feedback - Answer C
Choose the term that does not belong in the following groupings.
a. posterior lobe
b. hormone storage
c. nervous tissue
d. anterior lobe - Answer C
blood levels of hormones are kept within very narrow ranges by _______ mechanisms
a. humoral
b. neural
c. hormonal
d negative feedback - Answer D
Which hormone is produced in the hypothalamus
a. ADH
b. ACTH
c. LH
d. GH - Answer A
Hormones secreted into the hypophyseal portal system are detected by the _________
a. posterior pituitary
b. anterior pituitary
c. median eminence
d. infundibulum - Answer B
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