ACTUAL CORRECT QUESTIONS AND
VERIFIED DETAILED ANSWERS
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Clinically, one can monitor homeostasis of various substances such as ions, blood gases, and
organic solutes by taking a blood sample and analyzing its plasma. Does knowing a patient's
plasma concentration of Na+ tell you its concentration in the ECF and ICF?
Select one:
a. You would know the concentration of Na+ in the ICF but not the ECF.
b. You would know the concentration of Na+ in the ECF but not the ICF.
c. You would know the concentration of Na+ in both the ECF and ICF.
d. You would not know the concentration of Na+ in either the ECF or ICF.
You would know the concentration of Na+ in the ECF but not the ICF.
The first step of the Na+/K+ pump's activity involves the binding of:
Select one:
a. 3 Na+ from the inside of the cell
b. 2 K+ from the inside of the cell
c. 3 Na+ from the outside of the cell
d. 2 K+ from the outside of the cell
e. 3 Na+ and 2 K+ at the same time to their respective binding sites
3 Na+ from the inside of the cell
Oxygen diffuses from blood into cells down its concentration gradient. As cells become more
active and oxidative phosphorylation increases in the cell, which of the following occurs?
Select one:
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,a. The concentration gradient for oxygen increases and oxygen movement into the cell
increases.
b. The concentration gradient for oxygen decreases and oxygen movement into the cell
decreases.
c. The concentration gradient for oxygen decreases and oxygen movement into the cell
increases.
d. The concentration gradient for oxygen increases and oxygen movement into the cell
decreases.
e. The concentration gradient for oxygen and its rate of movement into the cell do not change.
The concentration gradient for oxygen increases and oxygen movement into the cell increases.
Peripheral thermoreceptors monitor:
Select one:
a. core body temperature
b. blood temperature
c. temperature in the heart
d. temperature in the hypothalamus
e. skin temperature
skin temperature
What feedback continually enhances the output, so that the regulated variable continues to be
moved in the direction of the initial change?
Select one:
a. negative
b. positive
c. endocrine
d. exocrine
e. feedforward
positive
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,Which of the following is found in greater concentration inside the cell than outside?
Select one:
a. potassium
b. water
c. sodium
d. both potassium and water
potassium
Heat stroke is characterized by excessive sweating.
Select one:
a. This is true.
b. This is false.
this is false
The net energy yield for the anaerobic metabolism of one glucose to lactate molecules is:
Select one:
a. 2 molecules of ATP and 2 NADH
b. 2 molecules of NADH and 0 ATP
c. 36-38 molecules of ATP and 0 NADH
d. 2 molecules of ATP and 0 NADH
e. 2 molecules of ATP and 3 NADH
2 molecules of ATP and 0 NADH
If a channel is lined with amino acids that have a net positive charge, which of the following ions
is/are likely to move freely through the channel?
Select one:
a. Na+
b. Cl-
c. K+
d. Ca++
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, Cl-
When you first get an infection, you get the "chills" because:
Select one:
a. the body is trying to cool down
b. the body is trying to increase temperature
The body is trying to increase temperature
Which of the following has the greatest amount of energy?
Select one:
a. FADH2
b. ADP
c. glucose
d. ATP
e. NADH
glucose
In completing the phases of glucose catabolism, leading ultimately to ATP, the carbons which
start the reaction as part of the glucose molecule actually end up:
Select one:
a. as ATP
b. as carbon dioxide
c. as NADH
d. as fats
e. as citric acid
as carbon dioxide
Which of the following descriptions INCORRECTLY describes the tissue type?
Select one:
a. Muscle tissue is specialized for contraction and generating force.
b. Epithelial tissue lines the inner surface of tubular structures in the body.
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