B2 investigating enzymatic reactions

Question 1

What is an enzyme?

Answer 1

A biological catalyst that speeds up chemical reactions in living organisms.

Question 2

True or False: Enzymes are consumed in the reactions they catalyze.

Answer 2

False

Question 3

Fill in the blank: The specific region on an enzyme where the substrate binds is called the _____.

Answer 3

active site

Question 4

What factors can affect the rate of an enzymatic reaction?

Answer 4

Temperature, pH, substrate concentration, and enzyme concentration.

Question 5

Which enzyme breaks down starch into sugars?

Answer 5

Amylase

Question 6

Multiple Choice: What happens to an enzyme when it is denatured?
A) It becomes more active
B) It loses its shape and function
C) It speeds up the reaction more
D) It increases the pH

Answer 6

B) It loses its shape and function

Question 7

What is the effect of increasing temperature on enzyme activity up to a certain point?

Answer 7

It generally increases the rate of reaction until the enzyme denatures.

Question 8

Short Answer: Describe what a substrate is in relation to an enzyme.

Answer 8

A substrate is the specific reactant that an enzyme acts upon.

Question 9

True or False: Each enzyme can catalyze multiple different reactions.

Answer 9

False

Question 10

What is the optimum pH for most human enzymes?

Answer 10

Around pH 7, which is neutral.