AP Biology: Unit 3 Enzymes

Front

What effect does an increase in temperature have on the rate of enzyme reactions?

Back

An increase in temperature increases the speed/kinetic energy of particles, leading to more frequent collisions between enzymes and substrates.

Front

What type of reaction is characterized by the breakdown of larger molecules into smaller ones?

Back

Catabolic reaction.

Front

Where does the substrate bind on an enzyme?

Back

The substrate binds at the active site of the enzyme.

Front

What is the optimum pH for enzyme activity?

Back

The optimum pH is the pH at which an enzyme exhibits maximum activity; for some enzymes, this may be around 6.6.

Front

What happens to enzyme activity at high temperatures?

Back

Enzyme activity declines due to denaturation, which alters the enzyme's structure.

Front

Define denaturation in the context of enzymes.

Back

Denaturation is the process where an enzyme loses its functional shape due to external stressors like high temperature or extreme pH.

Front

What is the role of the active site in enzyme function?

Back

The active site is the region on the enzyme where the substrate binds and the reaction occurs.

Front

What is a catabolic reaction?

Back

A catabolic reaction is a metabolic pathway that breaks down molecules into smaller units, releasing energy.

Front

What is an anabolic reaction?

Back

An anabolic reaction is a metabolic pathway that builds larger molecules from smaller units, requiring energy.

Front

How does pH affect enzyme activity?

Back

Enzyme activity can increase or decrease depending on the pH; each enzyme has an optimum pH range.