Cell structure review 11-18 and 11-19

Front

What is the specific part of the enzyme where substrates bind called?

Back

Active site

Front

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

Back

It speeds up the reaction without being changed.

Front

How does enzyme concentration affect the rate of a biochemical reaction?

Back

The reaction rate increases as the enzyme concentration increases.

Front

What is the effect of an enzyme on the activation energy of a chemical reaction?

Back

It decreases the activation energy required.

Front

Which organelle contains the genetic information in eukaryotic cells but is absent in prokaryotic cells and viruses?

Back

Nucleus

Front

What is the definition of an enzyme?

Back

A protein that acts as a catalyst to speed up biochemical reactions.

Front

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

Back

It is the region where substrate molecules bind and undergo a chemical reaction.

Front

What happens to an enzyme after it catalyzes a reaction?

Back

It remains unchanged and can be used again.

Front

What is meant by 'activation energy' in a chemical reaction?

Back

The minimum energy required for a reaction to occur.

Front

How do temperature and pH affect enzyme activity?

Back

Enzymes have optimal temperature and pH ranges; deviations can reduce activity or denature the enzyme.