LS 7C Final Exam Clicker Questions With
Complete Solutions
16s rRNA sequencing utilizes RNA to identify
microbial species present in a microbiota sample.
A. True
B. False Correct Answers B. False
A climber is scaling Mt. Everest. As her elevation
increases, the average amount of oxygen bound to
the hemoglobin in her red blood cells ________.
A. Increases
B. Decreases
C. Does not change Correct Answers B. Decreases
A common ER+ cancer therapy drug (Tamoxifen)
Inhibits the activation of estrogen receptor. Which
of the following is most likely NOT the function of
the Tamoxifen?
A. A molecule that tags the estrogen receptor for
degradation.
B. A competitive agonist to estrogen receptors.
C. A competitive antagonist to estrogen receptors.
D. A molecule that binds to estrogen receptor
mRNA and prevents translation. Correct Answers
B. A competitive agonist to estrogen receptors.
,A common HER2+ cancer therapy drug (Herceptin)
utilizes a protein that inhibits the activation of the
receptor tyrosine kinase HER2. Which of the
following is most likely the function of the
Herceptin protein?
A. A protein that binds the intracellular portion of
the HER2 protein dimers
B. A protein that prevents the dimerization HER2
proteins
C. A protein that competitively binds the HER2
promoter
D. A protein that competitively binds the HER2
enhancer Correct Answers B. A protein that
prevents the dimerization HER2
proteins
A condition called "hypoxia" occurs when not
enough oxygen is
being delivered to the body. What is acting as the
homeostatic sensor?
A. Oxygen
B. Carbon Dioxide
C. Heart
D. Brainstem
E. Diaphragm Correct Answers D. Brainstem
A condition called "hypoxia" occurs when not
enough oxygen is being delivered to the body.
,Chemoreceptors on the ________ sense oxygen
levels in the blood and relay this information to
respiratory control centers in the brain.
A. Aorta
B. Pulmonary trunk
C. Pulmonary vein
D. Superior vena cava Correct Answers A. Aorta
A condition called "hypoxia" occurs when not
enough oxygen is being delivered to the body.
When brainstem senses hypoxic conditions, the
rate of ventilation will ...
A. Increase
B. Decrease
C. Not change Correct Answers A. Increase
A decrease in cell adhesion, by the introduction of
an experimental substance to a tissue,
compromises the structural integrity of the tissue.
Which cell junction would MOST likely be affected
by this treatment causing a decrease in the
strength of the tissue?
A. adherens junctions
B. hemidesmosomes
C. tight junctions
D. gap junctions Correct Answers A. adherens
junctions
, A key difference between hormonal regulation of
the reproductive systems of males and females is
that:
A. LH and FSH are released cyclically in females
but nearly continuously in males.
B. LH and FSH are released only in females.
C. LH and FSH are released only in males.
D. LH is released in males and FSH is released in
females.
E. LH is released continuously in males and FSH is
released cyclically in females. Correct Answers A.
LH and FSH are released cyclically in females but
nearly continuously in males.
A newly discovered signaling molecule that binds
to a G protein-coupled receptor is being studied by
using cells maintained in cell culture. Preliminary
results show that the binding of this new ligand
causes the activation of adenylyl cyclase. In the
next part of this study, a non-hydrolyzable version
of GTP (a form of GTP that cannot be converted to
GDP) is added to the cell culture dishes and is
taken up by the cells. Which of the following would
you expect to observe?
A. decreased cAMP, increased protein kinase A
activity
Complete Solutions
16s rRNA sequencing utilizes RNA to identify
microbial species present in a microbiota sample.
A. True
B. False Correct Answers B. False
A climber is scaling Mt. Everest. As her elevation
increases, the average amount of oxygen bound to
the hemoglobin in her red blood cells ________.
A. Increases
B. Decreases
C. Does not change Correct Answers B. Decreases
A common ER+ cancer therapy drug (Tamoxifen)
Inhibits the activation of estrogen receptor. Which
of the following is most likely NOT the function of
the Tamoxifen?
A. A molecule that tags the estrogen receptor for
degradation.
B. A competitive agonist to estrogen receptors.
C. A competitive antagonist to estrogen receptors.
D. A molecule that binds to estrogen receptor
mRNA and prevents translation. Correct Answers
B. A competitive agonist to estrogen receptors.
,A common HER2+ cancer therapy drug (Herceptin)
utilizes a protein that inhibits the activation of the
receptor tyrosine kinase HER2. Which of the
following is most likely the function of the
Herceptin protein?
A. A protein that binds the intracellular portion of
the HER2 protein dimers
B. A protein that prevents the dimerization HER2
proteins
C. A protein that competitively binds the HER2
promoter
D. A protein that competitively binds the HER2
enhancer Correct Answers B. A protein that
prevents the dimerization HER2
proteins
A condition called "hypoxia" occurs when not
enough oxygen is
being delivered to the body. What is acting as the
homeostatic sensor?
A. Oxygen
B. Carbon Dioxide
C. Heart
D. Brainstem
E. Diaphragm Correct Answers D. Brainstem
A condition called "hypoxia" occurs when not
enough oxygen is being delivered to the body.
,Chemoreceptors on the ________ sense oxygen
levels in the blood and relay this information to
respiratory control centers in the brain.
A. Aorta
B. Pulmonary trunk
C. Pulmonary vein
D. Superior vena cava Correct Answers A. Aorta
A condition called "hypoxia" occurs when not
enough oxygen is being delivered to the body.
When brainstem senses hypoxic conditions, the
rate of ventilation will ...
A. Increase
B. Decrease
C. Not change Correct Answers A. Increase
A decrease in cell adhesion, by the introduction of
an experimental substance to a tissue,
compromises the structural integrity of the tissue.
Which cell junction would MOST likely be affected
by this treatment causing a decrease in the
strength of the tissue?
A. adherens junctions
B. hemidesmosomes
C. tight junctions
D. gap junctions Correct Answers A. adherens
junctions
, A key difference between hormonal regulation of
the reproductive systems of males and females is
that:
A. LH and FSH are released cyclically in females
but nearly continuously in males.
B. LH and FSH are released only in females.
C. LH and FSH are released only in males.
D. LH is released in males and FSH is released in
females.
E. LH is released continuously in males and FSH is
released cyclically in females. Correct Answers A.
LH and FSH are released cyclically in females but
nearly continuously in males.
A newly discovered signaling molecule that binds
to a G protein-coupled receptor is being studied by
using cells maintained in cell culture. Preliminary
results show that the binding of this new ligand
causes the activation of adenylyl cyclase. In the
next part of this study, a non-hydrolyzable version
of GTP (a form of GTP that cannot be converted to
GDP) is added to the cell culture dishes and is
taken up by the cells. Which of the following would
you expect to observe?
A. decreased cAMP, increased protein kinase A
activity
