chapter 6

Question 1

cofactor

Answer 1

inorganic ions, such as Fe2+, Mg2+, Mn2+, or Zn2+

Question 2

Coenzyme

Answer 2

complex organic or metalloorganic molecule that acts as transient carriers of specific functional groups

Question 3

in enzymes, which inorganic ion does not serve as a cofactor
A. Zn2+
B.Cu2+
C.Ca2+
D.Mg2+

Answer 3

C. Ca2+

Question 4

holoenzyme

Answer 4

complete catalytically active enzyme together with its bound coenzyme and/or metal ions

Question 5

apoenzyme/ apoprotein

Answer 5

the protein portion of a holoenzyme

Question 6

prosthetic group

Answer 6

coenzyme or metal ion that is very tightly or covalently bound to the enzyme protein

Question 7

an apoenzyme requires _______ for it’s activity

Answer 7

a cofactor

Question 8

enzyme catalyzed reactions take place within ___________

Answer 8

the active site

Question 9

active site

Answer 9

provides a specific environment in which a given reaction can occur more rapidly

Question 10

substrate

Answer 10

the molecule that is bound to the active site, and is acted upon by the enzyme

Question 11

ground state

Answer 11

starting point for either the forward or reverse reaction

Question 12

transition state

Answer 12

the point at which decay to substrate or product are equally likely