chapter 3.5 - Factors affecting enzymes action

Question 1

What two things effect enzyme action?

Answer 1

-temperature

pH

Question 2

What is a DENATURED enzyme?

Answer 2

When the shape of an enzymes active site is changed, so the subtrate won’t fit anymore?

Question 3

all enzymes have an __________ that they work best at

Answer 3

optimum temperature

Question 4

Explain the effect of temperature on enzymes?

Answer 4

A higher temperature increases the rate at first
- If it gets too hot, some of the bonds holding the enzymes together break which changes the shape of the enzyme =Denatured

Question 5

What is the perfect temperature for enzymes to work in humans?

Answer 5

37 degrees (human body temperature)

Question 6

Why is it important to have enzymes?

Answer 6

none of the reactions in your body would happen fast enough to keep you alive.

Question 7

Explain how pH effects enzymes?

Answer 7

If its too high or too low the pH interferes with bonds holding the enzyme together.
This changes the shape of the active sight = Denatured

Question 8

What is usually the the optimum pH for enzymes to work their best?

Answer 8

neutral pH 7 but not always

Question 9

What pH level does the enzyme pepsin (used to break down proteins in the stomach) work best at?

Answer 9

pH 2