Enzymes

Front

What is the role of enzymes in biological reactions?

Back

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

Front

What are enzymes primarily made of?

Back

Enzymes are primarily made of proteins.

Front

What is a substrate in the context of enzyme activity?

Back

A substrate is the reactant molecule upon which an enzyme acts.

Front

What is the active site of an enzyme?

Back

The active site is the specific region of an enzyme where the substrate binds.

Front

What does the 'lock and key' model describe?

Back

The 'lock and key' model describes how a substrate fits perfectly into the active site of an enzyme, similar to a key fitting into a lock.

Front

What happens to enzymes at high temperatures?

Back

Enzymes can denature at high temperatures, losing their functional shape and activity.

Front

What is denaturation in enzymes?

Back

Denaturation is the process where an enzyme loses its three-dimensional structure, rendering it inactive.

Front

How do enzymes affect activation energy?

Back

Enzymes lower the activation energy needed for a reaction, allowing it to proceed more quickly.

Front

What factors can affect enzyme activity?

Back

Factors that can affect enzyme activity include temperature, pH, and substrate concentration.

Front

What is the significance of enzyme specificity?

Back

Enzyme specificity ensures that enzymes only catalyze specific reactions, preventing unwanted reactions in the cell.