Enzyme Nomenclature Quiz

Question 1

EC 1 - catalyzes oxidation / reductions rxns

Answer 1

oxidoreductase

Question 2

EC 2 - catalyzes transfer of C, N, or P containing groups

Answer 2

transferase

Question 3

EC 3 - catalyzes cleavage of bonds by addition of water

Answer 3

hydrolase

Question 4

EC 4 - catalyzes cleavage of C-C, C-S and certain C-N bonds

Answer 4

lyase

Question 5

EC 5 - catalyzes racemization of optical or geometric isomers

Answer 5

isomerase

Question 6

EC 6 - catalyzes formations of bonds b/w C, O, S, and N coupled to hydrolysis of high energy phosphate

Answer 6

ligase

Question 7

EC 7 - catalyzes the movement of molecules from one side of a membrane to the other side of a membrane

Answer 7

translocase

Question 8

Which enzyme was added August 2018 after no change since 1961?

Answer 8

translocase

Question 9

Example of oxidoreductase

Answer 9

dehydrogenase

Question 10

Example of transferase

Answer 10

kinase

Question 11

Example of hydrolase

Answer 11

addition of water

Question 12

Examples of isomerases

Answer 12

isomerase and mutase

Question 13

Examples of lyase

Answer 13

aldolase

Question 14

Transfer of a phosphate group from one molecule (ATP) to another molecule

Answer 14

kinase

Question 15

Converts molecule to another isomer. Rearranges atoms in the molecule without lose or gain of atoms

Answer 15

isomerase

Question 16

Shift of phosphate group from one C to another C in the same molecule

Answer 16

mutase

Question 17

Involves NADH or FADH2; oxidation/reduction rxn
**look for molecules that donate or take up e-

Answer 17

dehydrogenase

Question 18

Cleaves C-C bond (reverse of an aldol condensation)

Answer 18

aldolase