Exercise: Enzyme Reaction

Questions for: Enzyme Reaction

Denaturation of an enzyme refers to the
A:
improper arrangement of the enzyme in a metabolic pathway
B:
loss of the enzymes proper shape
C:
formation of the enzymes proper shape
D:
formation of a new isozyme for that enzyme
Answer: B
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Oxidation is the
A:
loss of proton
B:
gain of electron
C:
loss of electron
D:
gain of protons
Answer: C
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The ability of CTP to bind to aspartate carbamoyltransferase and shut down the synthesis of more CTP is an example of
A:
enzyme induction
B:
enzyme repression
C:
feedback inhibition of enzyme activity
D:
none of these
Answer: C
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About 7.3 kcal/mole are released when
A:
glucose is converted to CO2 and H2O
B:
NAD+ is reduced to NADH
C:
ATP hydrolysis is coupled to sucrose synthesis
D:
the terminal phosphate bond of ATP is broken by hydrolysis
Answer: A
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An enzyme that is always produced, regardless of the presence of substrates or the end products, is called
A:
a constitutive enzyme
B:
an isoenzyme
C:
a repressible enzyme
D:
an allosteric enzyme
Answer: A
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