AP BIOLOGY

BIOCHEMISTRY

ENZYMES AND METABOLISM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
* When substrate concentration increases, theopportunity for an ____ betweenthe substrate and enzyme molecules alsoincreases.* The ____ continues to increase untilit reaches the maximum level. The rate ofreaction is constant.
A
effective collision
B
reaction rate
C
reaction level
Explanation: 

Detailed explanation-1: -(B) As the concentration of substrate increases, the enzyme becomes saturated with substrate. As soon as the catalytic site is empty, more substrate is available to bind and undergo reaction.

Detailed explanation-2: -At low substrate concentration the reaction rate increases sharply with increasing substrate concentration because there abundant free enzyme available (E) to bind added substrate.

Detailed explanation-3: -The competitive inhibitor competes with the substrate to bind to the enzyme. A competitive inhibitor mimics the substrate, competing for the active site. A competitive inhibitor can be overcome by increasing the substrate concentration.

Detailed explanation-4: -Substrate concentration For a given quantity of enzyme, the rate of reaction increases as the concentration of the substrate is increased.

There is 1 question to complete.