The enzyme Y catalyzes the elementary reaction ABA+B An enzyme concentration of

Question

The enzyme Y catalyzes the elementary reaction ABA+B An enzyme concentration of 1.0 M Y can convert a maximum of 0.5 M AB to the products A and B per second. Note: Since the concentrations of species in the cytoplasm of cells is small, the concentration unit of micromolar ( M or 10 6 M ) is used for consistency with biochemical systems.

Part A What will happen when each of the following is added to a solution that contains 1.0 M Y and 0.8 M AB ? Drag each item into the appropriate bin:

more Y more AB more B an inhibitor more A

Increase rate    Decrease rate No change in rate

Explanation / Answer

More Y = this will increase the rate , as 1.0 microM Y can convert only 0.5 AB and if more Y will given rate will increase .

More AB = no change in rate .

More B = no change in rate .

An inhibitor = decrease rate , as it will decrease the amount of Y .

More A = no change in rate .

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