Enzymes Flashcards
(7 cards)
1
Q
Lock and key vs induced fit
A
Substrate is not perfect fit but shape of active site slightly changes to accodmodate the substrate
2
Q
What does an enzyme do to a reaction
A
Lowers there activation energy
3
Q
Factors affecting rate of enzyme catalysed reactions
A
Temperature pH Enzyme concentration Substrate concentration The presence of inhibitors
4
Q
What is an inhibitor
A
A substance that reduces the rate of an enzyme-catalysed reaction
5
Q
Competitive and reversible inhibitors
A
Permanent- effects are irreversible
Reversible- temporary
6
Q
Competitive Inhibitors
A
These are molecules which are similar shape to substrate and fit into active site preventing substrate from entering
7
Q
Non-competitive
A
Not shaped like substrate, instead bind to another part of the of enzyme which alters the active sites shape so substrate cannot bind
