AP BIOLOGY

Detailed explanation-1: -Substrate concentration: Increasing substrate concentration also increases the rate of reaction to a certain point. Once all of the enzymes have bound, any substrate increase will have no effect on the rate of reaction, as the available enzymes will be saturated and working at their maximum rate.

Detailed explanation-2: -Increasing Substrate Concentration increases the rate of reaction. This is because more substrate molecules will be colliding with enzyme molecules, so more product will be formed. Increasing Enzyme Concentration will increase the rate of reaction, as more enzymes will be colliding with substrate molecules.

Detailed explanation-3: -Initially, an increase in substrate concentration leads to an increase in the rate of an enzyme-catalyzed reaction. As the enzyme molecules become saturated with substrate, this increase in reaction rate levels off. The rate of an enzyme-catalyzed reaction increases with an increase in the concentration of an enzyme.

Detailed explanation-4: -Explain what happens to the rate of an enzyme-controlled reaction when the substrate concentration is increased after the saturation point. the rate of reaction stays constant. All active sites stay occupied so increasing the substrate concentration has no effect.

Detailed explanation-5: -In the presence of a given amount of enzyme, the rate of an enzymatic reaction increases as the substrate concentration increases until a limiting rate is reached, after which further increase in the substrate concentration produces no significant change in the reaction rate (part (a) of Figure 14.7. 1).