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BioChem C785 - WGU - Module 3 - all questions and answers
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BioChem C785 - WGU - Module 3 - all questions and answers1. Hb (hemoglobin) binds to CO (carbon monoxide) with a higher affinity
than oxygen and stabilizes the R (relaxed) state: Answer- True
2. When hemoglobin changes from the T to the R, it has a high affinity
for oxygen: Answer- True
3. When hemoglobin changes from the R to T, it has a low affinity for
oxygen-
: Answer- True
4. Cooperatively refers to: Answer- structural changes that increases the
affinity for oxy- gen in hemoglobin
5. When the oxygen concentration is high, the heme shape is planar.
When the oxygen concentration is low, the heme shape is bent shape.:
Answer- True
6. The Bohr effect is a relationship between hemoglobin's oxygen binding
behavior in conjunction with the pH of the surroundings. When the pH is
low, hemoglobin has low affinity for oxygen and releases oxygen: Answer-
True
7. Bohr effect is a relationship between hemoglobin's oxygen binding be-
havior in conjunction with the pH of the surroundings. When the pH is
high, hemoglobin has high affinity for oxygen and binds oxygen.: Answer-
True
8. Relative to the lungs, the pH in the peripheral tissues is lower, because
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, the CO2 generated by metabolism is converted to bicarbonate, which
releases proton (H+): Answer- True
9. The Bohr effect is a relationship between hemoglobin's oxygen
binding behavior in conjunction with the pH of the surroundings. When
the H+ ion concentration increases, the pH of the solution decreases.:
True
10.Myoglobin stores oxygen, whereas hemoglobin transports oxygen.
Myo- globin has a higher affinity for oxygen compared to hemoglobin:
True
11.Hemoglobin is an oxygen transport protein, whereas myoglobin is an
oxygen storage protein. They exhibit different binding curves when plotted
on a graph with total partial pressure of the oxygen (x-axis) plotted against
the percentage saturation of hemoglobin (y-axis). What pattern of binding
curves do these proteins exhibit?: Hemoglobin has a sigmoidal curve
whereas the myoglobin has a hyperbolic curve.
12.Hemoglobin and myoglobin proteins bind to molecular oxygen.
However, the protein part of the hemoglobin does not bind directly to the
oxygen. Instead a specific atom helps bind the oxygen -: Iron
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