Enzyme

Question 1

Metabolite

Answer 1

A substance used when the body breaks down food, drugs or chemicals

Question 2

Metabolism

Answer 2

The chemical reactions in the body’s cells that change food into energy

Question 3

Catalyst

Answer 3

A chemical that speeds up chemical reactions

Question 4

Activation energy

Answer 4

The minimum energy required for a reaction to occur

Question 5

Active site

Answer 5

Specific region of an enzyme where a substrate binds and catalysis takes place or where chemical reactions occur

Question 6

Substrate

Answer 6

The chemical reactants that enzymes bind to.

Question 7

Complimentary site

Answer 7

The shape of the active site of an enzyme is complimentary to the shape of its specific substrate

Question 8

Competitive inhibitor

Answer 8

Competitive inhibitors compete with the substrate for the active site. When the inhibitor binds, it occupies the active site without causing a reaction.

Question 9

Non competitive inhibitor

Answer 9

Binds to a different site on the enzyme, changing the shape of the enzyme so that it cannot bind to the substrate effectively. This slows down the reaction by making the enzyme less active.

Question 10

Immobilised enzyme

Answer 10

An enzyme that is attached to an insoluble material to prevent mixing with the product.

Question 11

Enzyme substrate complex

Answer 11

As an enzyme and substrate come together, their interaction causes a small shift in the enzyme’s structure.