Enzyme Nomenclature

Question 1

A kinase is an enzyme that?

Answer 1

catalyze phosphorylation reactions

Question 2

A dehyrdrogenase is an enzyme that?

Answer 2

Tranfer H+ onto an energy acceptor such as NADH or FADH

Question 3

A synthase is an enzyme that?

Answer 3

is able to do work without any energy input

Question 4

A synthetase is an enzyme that?

Answer 4

creates new covalent bonds with energy input

Question 5

A phosphatase is an enzyme that?

Answer 5

Removes a phosphate group from a substituent

subcateogory of hydrolases

Question 6

A hydrolase is an enzyme that?

Answer 6

Uses water to break a chemical bond.

Normal to break a large molecule into smaller substituents

Question 7

An oxidoreductase is an enzyme that?

Answer 7

catalyzes oxidation/reduction reactions

*a dehydrogenase is an example

Question 8

Transferases are enzyme that?

Answer 8

Transfer functional groups

Question 9

Lyases are?

Answer 9

Non-hydrolytic addition or removal of groups from substrates. C-C, C-N, C-O or C-S bonds may be cleaved

Question 10

Isomerases are enzymes that?

Answer 10

Intramolecule rearrangement, i.e. isomerization changes within a single molecule

Question 11

Ligases are enzymes that?

Answer 11

Join together two molecules by synthesis of new C-O, C-S, C-N or C-C bonds with simultaneous breakdown of ATP

Question 12

Translocases are enzymes that?

Answer 12

Catalyse the movement of ions or molecules across membranes or their separation within membranes