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Microbiology Objective Questions { Energy Release and Conservation }



15. Glucose can be broken down to pyruvate by
A.Entner-Doudoroff pathway
B.tricarboxylic acid cycle
C.both (a) and (b)
D.none of these
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16. In lactic acid fermentation, the final electron acceptor would be
A.fructose
B.pyruvate
C.glucose
D.acetyl-CoA
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17. The amount of ATP that can be obtained by complete oxidation of a glucose by a bacterium is
A.greater than by a yeast cell
B.lesser than by a yeast cell
C.exactly or approximately equal to by a yeast cell
D.none of these
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18. Which of the following is accomplished in chemiosmosis?
A.The oxidation of ATP
B.The oxidation of water
C.The oxidation of NADH
D.The oxidation of CO2
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19.  A yeast or fungal cell produces how many net ATP molecules per molecule of glucose when completely oxidized?
A.32
B.34
C.36
D.38
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20. Before most molecules can enter the Krebs citric acid cycle, they must be converted to
A.citric acid
B.oxaloacetic acid
C.NADH or FADH
D.acetyl-CoA
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21.  How many oxygen molecules are required in the fermentation of one molecule of glucose to ethanol and CO2?
A.0
B.1
C.2
D.36
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