Unit 2

Front

What causes hydrogen bonds between water molecules?

Back

The uneven, polar charge across the water molecule.

Front

What property of water allows it to dissolve other ions and molecules?

Back

Polarity.

Front

What property of water allows it to stick to other substances?

Back

Adhesion.

Front

What is the part of the enzyme where the substrate binds?

Back

Active site.

Front

Why are enzymes considered catalysts?

Back

Because they speed up chemical reactions.

Front

What is the term for the attraction between water molecules?

Back

Cohesion.

Front

What is the significance of water's high specific heat?

Back

It helps regulate temperature in organisms and environments.

Front

What is the role of enzymes in biological reactions?

Back

They lower the activation energy required for reactions.

Front

What is the difference between a substrate and an enzyme?

Back

A substrate is the reactant that an enzyme acts on, while an enzyme is a catalyst that facilitates the reaction.

Front

What is meant by the term 'activation energy'?

Back

The minimum energy required for a chemical reaction to occur.