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Enzyme Reaction

Enzyme Reaction
In the reaction, C6H12O6+ 6O2 → 6CO2 + 6H2O + energy, which component is being oxidized?

O2
C6H12O6
H2O
CO2

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Enzyme Reaction
The ability of a competitive inhibitor to bind to an active site in an allosterically controlled enzyme is __________ than the ability of a non-competitive inhibitor to bind to an active site in the same allosterically controlled enzyme.

greater
approximately equal
lesser
half

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Enzyme Reaction
If the Keq for an enzymatic reaction is greater than 1, the reaction

both (a) and (b)
none of these
will be endergonic
can not occur without the input of energy

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Enzyme Reaction
About 7.3 kcal/mole are released when

NAD+ is reduced to NADH
glucose is converted to CO2 and H2O
ATP hydrolysis is coupled to sucrose synthesis
the terminal phosphate bond of ATP is broken by hydrolysis

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Enzyme Reaction
The fact that β-oxidation of fatty acids, occurs in the mitochondria whereas fatty acid synthesis occurs in the cytoplasmic matrix, is an example of regulation of enzymatic activity by the __________ mechanism.

induction
repression
competitive inhibition
compartmentation

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Enzyme Reaction
The affinity of an enzyme for its substrate, when the enzyme has a Km of 0.50 M will be __________ than the affinity of an enzyme for its substrate when the enzyme has a Km of 0.05 M.

lesser
approximately equal
half
greater

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