4.4 Enzymes

Question 1

What is the function of an enzyme?

Answer 1

To speed up (catalyze) a chemical reaction without being consumed

Question 2

How do enzymes catalyze chemical reactions?

Answer 2

By lowering the activation energy

Question 3

What is activation energy?

Answer 3

Amount of energy required to start a reaction

Question 4

What is an active site?

Answer 4

Where the substrate binds to

Question 5

Which is organic? Cofactors or coenzymes

Answer 5

Coenzymes

Question 6

Which is inorganic? Cofactors or coenzymes

Answer 6

Cofactors

Question 7

Competitive inhibition is when an inhibitor sits in the active site or sits outside the active site to block production?

Answer 7

Competitive inhibition is when an inhibitor sits IN the active site to block production

Question 8

What three conditions can influence enzyme activity

Answer 8

pH, temperature, and salt concentration

Question 9

Whats the difference between an enzyme and a coenzyme?

Answer 9

An enzyme is an organic molecule which speeds up a reaction, but a coenzyme is an organic molecule (such as a vitamin) which is required for the enzyme to function

Question 10

How do enzymes lower activation energy?

Answer 10

Enzymes bring reactants into contact with eachother so less energy is required for the enzyme to function