1.3 and 1.4

Proteins are made up from smaller sub-units called

• Fats

• DNA

• Amino acids

• Bases

The _________ and _________ of amino acids will determine the shape and function of a protein.

• size and shape

• order and number

• number and size

• size and order

Hair, skin and muscle are all made up of which type of protein?

• Structural

• Enzymes

• Antibodies

• Receptors

• Hormones

Which category of protein are chemical messengers that are transported around the body in the blood?

• Structural

• Enzymes

• Antibodies

• Receptors

• Hormones

Which category of protein form part of the immune system?

• Structural

• Enzymes

• Antibodies

• Receptors

• Hormones

Enzymes are biological catalysts that

• slow down chemical reactions

• have no effect on chemical reactions

• speed up chemical reactions

At the end of a reaction enzymes are

• completely altered

• unchanged

• denatured

Where does the chemical reaction take place in the enzyme?

The chemical an enzyme reacts with is known as the

• substrate

• enzyme

• product

• reactant

What term is used to describe a "building up" enzyme reaction?