AP Bio Insta-Review Topic 3.3: Environmental Impacts on Enzyme

Front

What is the effect of proton pumping on the pH of the mitochondrial matrix during cellular respiration?

Back

The pH of the matrix increases.

Front

Does an increase in heat always denature an enzyme?

Back

False, not all increases in heat will denature an enzyme.

Front

Which structure of an enzyme remains unaffected when it denatures?

Back

Primary structure remains unaffected.

Front

What happens to the reaction rate as product concentration increases?

Back

The reaction rate decreases.

Front

What is the effect on reaction rate if an enzyme is denatured?

Back

The reaction rate decreases.

Front

Define enzyme denaturation.

Back

Denaturation is the process where an enzyme loses its functional shape due to external stress, affecting its activity.

Front

What factors can affect enzyme activity?

Back

Temperature, pH, substrate concentration, and enzyme concentration.

Front

Explain the role of temperature in enzyme activity.

Back

Temperature affects the kinetic energy of molecules; optimal temperatures increase enzyme activity, while extreme temperatures can lead to denaturation.

Front

What is the optimal pH range for most enzymes?

Back

Most enzymes have an optimal pH range of 6-8, but some function best in acidic or basic conditions.

Front

How does substrate concentration affect enzyme activity?

Back

As substrate concentration increases, the reaction rate increases until a saturation point is reached.