enzymes as catalysts

Question 1

do enzymes affect the equilibrium positiion of a reaction

Answer 1

no

Question 2

ennzyme action

Answer 2

specifically bind and stabilise the transition state

Question 3

transition state

Answer 3

reaction intermeditae which has the greatest free energy

Question 4

how do enzymes reduce the actovation energy

Answer 4

by providing alternative routes

Question 5

glycogen storage disease

Answer 5

Enzyme deficiency that results in failure of
glycogen to enter transition “phosphorylated” state

Question 6

what does the catalytic activity of enzymes depend on

Answer 6

presence of small molecules, called cofactors or coenzymes

Question 7

cofactors

Answer 7

inorganic metal ions

Question 8

coenzymes

Answer 8

organic molecules

Question 9

what are tightly bound coenzymes called

Answer 9

prosthetic group

Question 10

apoenzyme

Answer 10

enzyme without cofactor

Question 11

enzyme with cofactor

Answer 11

holoenzyme

Question 12

isoenzyme

Answer 12

isoforms of enzymes, they catalyse the same reaction but have different properties and structure (and sequence)

Question 13

what are phosphorylation reactions carried out by

Answer 13

protein kinases

Question 14

zymogens

Answer 14

inactive precursors of enzymes