N5 Unit 1 KA4 Quiz

Label the following diagram.

a

b

c

d

e

Substrate

Enzyme-substrate complex

Products

Enzyme

Active Site

Antibodies are composed of

• Starch

• Protein

• Glucose

• Glycerol

Enzymes ​ (a)   the rate of a reaction and at the end of the reaction are ​ (b)  

• Speed up
• Unchanged
• Slow down
• Changed

What is the name of a substance that speeds up the rate of a chemical reaction, but is unchanged in the process

• Catalyst

• Active Site

• Product

• Substrate

Which word describes the relationship between the shape of the active site of an enzyme and the shape of its specific substrate?

• Complementary

• Denatured

• Optimum

• Strong

From the graph, identify the optimum pH of the enzyme.

(a)  

Proteins are made up of smaller sub-units called

• Bases

• Amino acids

• DNA

• Fats

The ideal condition an enzyme works at is known as the

(a)  

When an enzymes active site has irreversibly changed shape, the enzyme is said to have become

(a)  

Which of the following effects enzyme activity?

• Size of the enzyme

• Light

• pH

• Temperature