Enzymes Flashcards
1
Q
All enzymes are
A
catalysts
2
Q
Enzymes do what?
A
increase rate of reaction by lowering activation energy
3
Q
True or False enzymes are NOT consumed in reaction
A
True
Enzymes NOT consumed in reaction
4
Q
Molecule which enzymes act upon
A
substrate
5
Q
Enzymes act on
A
substrates
6
Q
Measure of affinity that an enzyme has towards the substrate
A
Km
7
Q
decrease in KM will increase AFFINITY
A
inverse relationship
8
Q
Max velocity of an enzyme
A
VMAX
9
Q
Km = of VMAX
A
Km = ½ of max
10
Q
3 factors affecting reaction velocity
A
- substrate concentration
- Temperature
- pH
11
Q
Maximal velocity of an enzyme catalyzed reaction
A
VMAX
12
Q
Amount of substrate required to reach ½ of VMAX
A
Km
13
Q
Increase in KM
No Change in VMAX
^ -
A
Competitive Inhibitors
14
Q
No change in Km
Decrease in VMAX
-V
A
Noncompetitive Inhibitor
15
Q
Competitive inhibitors bind to
A
substrate binding site of an enzyme
