Enzymes

Question 1

List the differences between enzyme and chemical catalyst

Answer 1

Works at mild conditions
Regulated
Very fast reaction rates
Reaction specificity

Question 2

What is a isoenzyme

Answer 2

Enzyme which catalyse the same reaction but vary in structure

Question 3

What are the 3 ways an enzyme reduces activation energy

Answer 3

Reduces entropy
Desolation
Induced fit

Question 4

What is michaelis menten equation

Answer 4

V = Vmax[s]/ km

Question 5

When V max is achieved the enzyme is said to be saturated, true or false

Answer 5

True

Question 6

What does Km tell you

Answer 6

How specific an enzyme is

Question 7

Line-weaver buck plot is a line which the slope is = Vmax/km, true or false

Answer 7

False it’s km/ v max

Question 8

What is altered in competive inhibitors

Answer 8

Km is increased but Vmax stays the same

Question 9

What is changed with non competive inhibitors

Answer 9

Km is unchanged

Vmax decreases

Question 10

Analysis an enzyme to see if it’s causing disease is difficult, why

Answer 10

Can’t always tell where it’s coming from the change in protein levels. Though there are mechanisms to distinguished