Enzymes

Front

What is an enzyme?

Back

An enzyme is a biological catalyst that speeds up chemical reactions in living organisms without being consumed in the process.

Front

Which of the following is an example of an enzyme?

Back

Amylase is an example of an enzyme.

Front

What are enzymes composed of?

Back

Enzymes are composed of amino acids.

Front

What is the active site of an enzyme?

Back

The active site is the region on the enzyme where substrates bind and undergo a chemical reaction.

Front

What is the role of enzymes in chemical reactions?

Back

Enzymes lower the activation energy required for a reaction to occur, thus speeding up the reaction.

Front

Do all enzymes work best at the same temperature?

Back

No, each enzyme has an optimal temperature at which it functions most effectively.

Front

What happens to an enzyme if the pH is too high or too low?

Back

Extreme pH levels can denature an enzyme, altering its shape and rendering it inactive.

Front

What is substrate specificity in enzymes?

Back

Substrate specificity refers to the ability of an enzyme to choose exact substrate molecules to bind and catalyze.

Front

What is the effect of temperature on enzyme activity?

Back

Increasing temperature generally increases enzyme activity up to a certain point, after which the enzyme may denature.

Front

What is a coenzyme?

Back

A coenzyme is a non-protein molecule that assists enzymes in catalyzing reactions.