McGraw-Hill Online Learning Center Test<BLURT>

McGraw-Hill Online Learning Center Test

1. Review the animation and answer the following questions.

Consider the metabolic pathway E --> F --> G --> H. In feedback inhibition, which would be the molecule involved in shutting off the action of the first enzyme?

A. E
B. F
C. G
D. H

2. In feedback inhibition, when the end product binds at an allosteric site on the enzyme, A. this blocks the substrate from binding at this allosteric site.
B. this blocks the substrate from binding at another allosteric site.
C. the enzyme undergoes a change which blocks its active site.
D. the enzyme is broken apart by the binding.

3. In feedback inhibition, the end product almost always inhibits the first enzyme in the pathway. This is because A. it is always the easiest enzyme to inhibit.
B. this will save the cell from making intermediates in the pathway when they are not needed.
C. this enzyme will always have an allosteric site.
D. this enzyme will always have an active site where the inhibitor can bind.

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