Enzymes

Front

What is the role of enzymes in chemical reactions?

Back

Enzymes speed up chemical reactions by lowering the activation energy required for the reaction to occur.

Front

What is the active site of an enzyme?

Back

The active site is the specific region on an enzyme where the substrate binds and the reaction takes place.

Front

What is a substrate in the context of enzymes?

Back

A substrate is the reactant molecule that an enzyme acts upon during a chemical reaction.

Front

What is an enzyme?

Back

An enzyme is a biological catalyst that accelerates chemical reactions in living organisms.

Front

What is the enzyme-substrate complex?

Back

The enzyme-substrate complex is the temporary structure formed when an enzyme binds to its substrate.

Front

How do enzymes lower activation energy?

Back

Enzymes lower activation energy by stabilizing the transition state and providing an alternative reaction pathway.

Front

What factors can affect enzyme activity?

Back

Factors that can affect enzyme activity include temperature, pH, substrate concentration, and the presence of inhibitors or activators.

Front

What is an inhibitor in enzyme activity?

Back

An inhibitor is a substance that decreases the activity of an enzyme by binding to it and preventing substrate binding.

Front

What is an activator in enzyme activity?

Back

An activator is a substance that increases the activity of an enzyme, often by enhancing the binding of the substrate.

Front

What is the difference between competitive and non-competitive inhibition?

Back

Competitive inhibition occurs when an inhibitor competes with the substrate for the active site, while non-competitive inhibition occurs when an inhibitor binds to a different site on the enzyme.