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1
With negative-feedback inhibition, as the number of end products increases,
A)enzyme activity decreases.
B)enzyme activity increases.
C)enzyme/substrate collisions become more effective.
D)inhibitors attach to substrates.
2
Enzymes function by
A)lowering the activation energy required for a reaction.
B)increasing the temperature of the reaction.
C)providing activation energy to substrate molecules.
D)increasing the production of substrate.
3
Inhibitor molecules
A)react with end-products.
B)attach to substrates.
C)lower activation energy.
D)attach to enzymes.
4
An ATP molecule is composed of
A)1 adenine, 3 riboses, 1 phosphate.
B)3 adenines, 1 ribose, 1 phosphate.
C)1 adenine 1 ribose, 3 phosphates.
D)3 adenines, 3 riboses, 3 phosphates.
5
ATP --> ADP + P. This reaction represents
A)energy stored.
B)energy released.
C)energy destroyed.
D)energy created.





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