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Macromolecules and Enzymes

Total questions: 36

Worksheet time: 1hrs 4mins

Name
Class
Date
1.

Type of protein that SPEEDS UP metabolic reactions in plants and animals without being permanently changed or destroyed

a)

The reactant

b)

Glucose

c)

Enzyme

d)

ATP

2.

Changing the shape (such as overheating) of an enzyme results in the enzyme's loss of -

a)

ability to catalyze a reaction

b)

storage of inherited information

c)

net electrical charge

d)

storage of a large amount of chemical energy

3.

Refer to the figure above. What temperature would be considered the optimum temperature for this enzyme's activity rate?

a)

20 Degrees Celsius

b)

60 Degrees Celsius

c)

40 Degrees Celsius

d)

30 Degrees Celsius

4.

What suffix is used in the names of most enzymes?

a)

-nic

b)

-ase

c)

-gen

d)

-yme

5.

Both lipids and carbohydrates are important in animal cells because both -

a)

provide insulation

b)

store energy

c)

contain nitrogen

d)

form cell walls

6.

Which of the following macromolecules are a prominent part of animal tissues that function in insulation, helping animals conserve heat?

a)

Proteins

b)

Lipids

c)

Carbohydrates

d)

Nucleic Acids

7.

Which of the following is NOT a function of proteins?

a)

Make up antibodies

b)

Serve as catalysts that control the rate of chemical reactions in the cell

c)

Store genetic information

d)

Form parts of tissues such as bone and muscle

8.

What is an example of a nucleic acid?

a)

A strand of DNA

b)

Vegetable oil

c)

Collagen found in human skin

d)

A sweet potato

9.

Which of the following effect the efficiency of an enzyme

a)

temperature

b)

pH

c)

amount of enzyme

d)

All of the above

10.

Proteins are formed from monomers (subunits) called -

a)

nucleic acids

b)

fatty acids

c)

nucleotides

d)

amino acids

11.

Enzymes only work with specific substrates because each substrate -

a)

actively interferes with other substrates around it

b)

destroys its specific enzyme

c)

can only use a specific ionic bond with the enzyme

d)

has a specific activation site for enzyme attachment

12.

According to the graph, addition of the enzyme amylase causes the reaction to -

a)

slow down

b)

speed up

c)

take in heat

d)

give off heat

13.

Carbohydrates are formed from monomers (subunits) called -

a)

monosaccharides

b)

nucleotides

c)

fatty acids

d)

amino acids

14.

Lipids are formed from monomers (subunits) called -

a)

fatty acids

b)

nucleic acids

c)

amino acids

d)

monosaccharides

15.

Nucleic acids are formed from monomers (subunits) called -

a)

nucleotides

b)

amino acids

c)

fatty acids

d)

monosaccharides

16.

Sugar belongs to which class of macromolecules?

a)

proteins

b)

lipids

c)

nucleic acids

d)

carbohydrates

17.
All organic compounds contain the element
a)
carbon
b)
nitrogen
c)
phosphorus
d)
sulfur
18.
All polymers are made up of...
a)
monosaccharides
b)
monomers
c)
proteins
d)
None of these
19.

Which macromolecule is shown?

a)

lipid

b)

protein

c)

nucleic acid

d)

carbohydrate

20.

Which macromolecule is shown?

a)

lipid

b)

protein

c)

nucleic acid

d)

carbohydrate

21.
Proteins are made of... 
a)
C H O
b)
C H O N
c)
C H O N P
d)
C H O N S
22.
What type of macromolecule is being represented in this image? 
a)
carbohydrate
b)
lipid
c)
protein
d)
nucleic acid
23.
Is found in the cell membrane as a bilayer. 
a)
lipids
b)
protein
c)
nucleic acid
d)
carbohydrate
24.
What is the primary function of carbohydrates in your body?
a)
Speed up chemical reactions.
b)
Give immediate energy.
c)
Help to store energy.
d)
Build cell walls in plants.
25.
Any substance that is acted upon by an enzyme is called a(n)?
a)
Coenzyme
b)
Substrate
c)
Vitamin
d)
Polypeptide
26.
In the diagram, what is letter A? 
a)
product
b)
substrate
c)
enzyme-substrate complex
d)
active site
27.
What happens when enzymes are heated to a high temperature?
a)
The enzymes die.
b)
The shapes of the enzyme are altered denature
c)
The enzymes' amino acid sequence changes.
d)
The enzymes remain the same
28.
Letter D...
a)
active site
b)
enzyme
c)
substrate
d)
products
29.
Where do substrates bind on an enzyme?
a)
voltage-gated channels
b)
surface receptor
c)
calcium channels
d)
active site
30.
Which of the following conclusions can be drawn from this graph?
a)
The optimum pH of the enzyme is 6.6.
b)
The optimum pH of the enzyme is 5.8
c)
The enzyme’s activity increases as pH increases 5.0 to 9.0
d)
The enzyme’s activity is greater around pH of 8.0 .
31.

Based on the graph, what temperature does this enzyme work best?

a)

15 C

b)

40 C

c)

30 C

d)

50 C

32.
Letter E...
a)
active site
b)
enzyme
c)
substrate
d)
products
33.
Letter C...
a)
active site
b)
enzymes
c)
substrate
d)
products
34.
An enzyme speeds up a reaction by
a)
lowering the activation energy.
b)
raising the activation energy.
c)
releasing energy.
d)
absorbing energy.
35.
What makes an enzyme substrate specific?
a)
Size
b)
Shape
c)
Name
d)
Location it is found in
36.
Which of these is most likely an enzyme?  (Based on the suffix)
a)
Sucrose
b)
Saccharide
c)
Fructose
d)
Amylase

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