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Proteins & Enzymes Quiz

Total questions: 10

Worksheet time: 7mins

Name
Class
Date
1.

The building blocks of proteins are

a)

nucleotides

b)

monosaccharides

c)

lipids

d)

amino acids

2.

A catalyst is a chemical that

a)

blocks a chemical reaction from occurring

b)

slows down a chemical reaction

c)

speeds up the rate of a chemical reaction

d)

has no effect on a chemical reaction

3.

Object C in this image is know as the

a)

enzyme

b)

substrate

c)

enzyme-substrate complex

d)

product

4.

This molecule represents a/an

a)

monosaccharide

b)

fatty acid

c)

amino acid

d)

nitrogen base

5.

Proteins are made up from smaller sub-units called

a)

Fats

b)

DNA

c)

Amino acids

d)

Bases

6.

Enzymes are biological catalysts that

a)

slow down chemical reactions

b)

have no effect on chemical reactions

c)

speed up chemical reactions

7.

The chemical an enzyme reacts with is known as the

a)

substrate

b)

enzyme

c)

product

d)

reactant

8.

Which two factors can affect enzyme activity?

a)

Light intensity

b)

pH

c)

Moisture

d)

Temperature

9.
Enzymes are
a)
nucleic acids
b)
proteins
c)
lipids
d)
carbohydrates
10.
The graph shows how enzymes affect reactions in cells. Which statement best summarizes the information shown in the graph?
a)
Enzymes increase the energy of the reactants.
b)
Enzymes decrease the energy level of the products.
c)
Enzyme decrease the activation energy of the reaction.
d)
Enzymes reverse the direction of the reaction.