First slide

Enzymes

Question

Statement A: Rate of a chemical reaction doubles or decreases by half for every 10°C change in either direction.
Statement B: Enzyme catalysed reactions are faster than the uncatalysed reactions of the same type.

Easy

A

Statement A is correct but statement B is incorrect.
B

Statement A is incorrect but statement B is correct.
C

Both statement A and statement B are incorrect.
D

Both statement A and statement B are correct.

Solution

Rate of a physical or chemical process refers to the amount of product formed per unit time. Rate can also be called velocity if the direction is specified. Rates of physical and chemical processes are influenced by temperature among other factors. A general rule of thumb is that rate doubles or decreases by half for every 10°C change in either direction. Catalysed reactions proceed at rates vastly higher than that of uncatalysed ones. When enzyme catalysed reactions are observed, the rate would be vastly higher than the same but uncatalysed reaction.

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