Biology EOC Review Day 4: Biochemistry

Front

What property of water makes it the 'universal solvent'?

Back

It is a polar molecule.

Front

What are attractions between water molecules called?

Back

Hydrogen bonds.

Front

What do enzymes do to activation energy?

Back

Enzymes lower activation energy.

Front

How many different amino acids are there?

Back

There are 20 different amino acids.

Front

What temperature does this enzyme work best? (Based on a graph showing enzyme activity)

Back

30 C.

Front

Define 'polar molecule'.

Back

A molecule with a partial positive charge on one side and a partial negative charge on the other, leading to an uneven distribution of charge.

Front

What is the role of enzymes in biochemical reactions?

Back

Enzymes act as catalysts to speed up chemical reactions by lowering the activation energy.

Front

What is a hydrogen bond?

Back

A weak attraction between a hydrogen atom and an electronegative atom, often seen in water molecules.

Front

Explain the significance of the 'active site' of an enzyme.

Back

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

Front

What is the structure of an amino acid?

Back

An amino acid consists of a central carbon atom, an amino group, a carboxyl group, a hydrogen atom, and a variable R group.