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

What does a substrate become after an enzyme-catalyzed reaction?

Back

A product.

Front

True or False: Enzymes can act on many different substrates.

Back

False.

Front

What is the site called where substrates bind to an enzyme?

Back

Active site.

Front

What happens to enzymes when they are heated to high temperatures?

Back

The shapes of the enzyme are altered (denatured).

Front

What is a substance with a pH greater than 7 called?

Back

Base.

Front

What is the role of an enzyme in a chemical reaction?

Back

To lower the activation energy required for the reaction to occur.

Front

What is denaturation in the context of enzymes?

Back

Denaturation is the process where an enzyme loses its functional shape due to external factors like heat or pH changes.

Front

What is the lock and key model of enzyme action?

Back

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

Front

What factors can affect enzyme activity?

Back

Temperature, pH, substrate concentration, and the presence of inhibitors or activators.