Enzymes

Question 0

Lock and key

Answer 0

The enzymes active site is exactly complementary to the structure of the substrate
-theory is not true

Question 1

Binding of the enzyme to the substrate models

Answer 1

1 lock and key theory

2 induced fit theory

Question 2

Induced fit theory

Answer 2

Active site has flexible shape

When the appropriate substrate comes the conformation of the active site changes

Question 3

Are enzymes reversible

Answer 3

Yes

Enzymes that makes something could also break it down

Question 4

Temp on an enzyme

Answer 4

• as temp increases the enzyme rate increases until an optimal temp is reached
• beyond optimal temp heat changes the shape of the active site and deactivates it

Question 5

Effect of ph on enzyme

Answer 5

Above andbelow optimal ph the enzyme sctivity decreases

-avg is 7.2 optimally

Question 6

Effects of concentration

Answer 6

When con of enzyme and substrate are low many active sites are unoccupied and rxn rate is low
-high substrate conc will increase the rxn rate until all active sites are taken