6 Classes of Enzyme

Question 1

Describe Oxidoreductase:

Answer 1

Enzyme that catalyzes the oxidation of a substrate with the simultaneous reduction of another substrate or coenzyme.

Question 2

Describe Transferases:

Answer 2

Enzyme that catalyzes the transfer of functional groups between acceptors and donors.

Question 3

Describe Hydrolases:

Answer 3

Enzyme that catalyzes the hydrolytic breakdown of a substrate to 2 products by addition of water.

Question 4

Describe lyase:

Answer 4

Enzyme that catalyzes the cleavage of bonds.

Question 5

Describe Isomerase:

Answer 5

Enzyme that catalyzes the changes within one molecule altering the structure but not the atomic composition.

Question 6

How does isomerase catalyze reactions?

Answer 6

By moving a group from one position to the other.

Question 7

Describe Ligases or Synthetases:

Answer 7

Enzymes that catalyze synthetic reactions.

Question 8

How does ligases catalyze reactions?

Answer 8

Links 2 molecules at the expense of ATP by the formation of new: c-c, c-o, c-n, c-s bonds with the simultaneous hydrolysis of ATP.