2.5.1 Proteins

Question 1

What are proteins?

Answer 1

Protein molecules are made up of long chains of
amino acids. These long chains are folded to
produce a specific shape that enables other
molecules to fit into the protein.

Question 2

What can proteins act as?

Answer 2

■ structural components of tissues such as muscles
■ hormones
■ antibodies
■ catalysts.

Question 3

What are biological catalysts?

Answer 3

Catalysts increase the rate of chemical reactions.
Biological catalysts are called enzymes. Enzymes
are proteins.