Enzymes Are Affected By Inhibitors

Question 1

Competitive inhibitors

Answer 1

Compete with substrate for the enzymes active site
Substrate and inhibitor have similar shapes
Complementary in shape to the enzymes active site
Goes into active site and substrate is unable to bind
No enzyme/substrate complexes are made

Question 2

Non-competitive inhibitors

Answer 2

Non-competitive inhibitor does not have similar shape to the substrate
Binds to the enzyme at a receptor site not at the active site
Causes change in shape of enzyme active site
Substrate no longer able to bird
No enzyme-substrate complexes are formed

Question 3

The role of inhibition in controlling metabolic reactions

Answer 3

Very important in regulating metabolism
Otherwise you would have too much of some substances made and too little of others
Metabolic pathways

Question 4

Metabolic reaction

Answer 4

A linked series of reactions

Question 5

Which organelle makes enzymes?

Answer 5

Enzymes are proteins
Proteins are synthesised in ribosomes

Question 6

How important are enzymes?

Answer 6

Catalyse a wide range of intracellular and extracellular reactions
Determine structures and functions