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Biological Molecules Review

Total questions: 45

Worksheet time: 49mins

Name
Class
Date
1.

Which biomolecule is fundamental to the function of biological membranes, such

as cell membranes?

a)

Proteins

b)

Lipids

c)

Carbohydrates

d)

Nucleic acids

2.

Which biomolecule is the primary source of energy in the human diet?

a)

Lipids

b)

Protein

c)

Carbohydrates

d)

Nucleic acid

3.

Fats, steroids, and waxes are all examples of _____.

a)

lipids

b)

carbohydrates

c)

proteins

d)

nucleic acids

4.

Collagen, antibodies, enzymes, and myoglobin are examples of _____

a)

proteins

b)

nucleic acids

c)

carbohydrates

d)

lipids

5.

Sickle cell anemia is a genetic disorder in which the hemoglobin

responsible for transporting oxygen is malformed. The disease begins

with a mutation in a _____ acid, which results in a structural

difference in a _____.

a)

protein, nucleic acid

b)

nucleic acid, lipid

c)

nucleic acid, protein

d)

protein, lipid

6.

What is the primary function of nucleic acids?

a)

To store energy.

b)

To store genetic information.

c)

To provide structure.

d)

To transport.

7.

In the human body, fibrinogen is necessary to seal cuts and stop blood loss.

Fibrinogen is an example of which of the following types of biomolecule?

a)

Nucleic acid

b)

Fatty acid

c)

Carbohydrate

d)

Protein

8.

Nucleic acids include _____.

a)

glucose and glycogen

b)

carboxylic acid and retinol

c)

glycerol and chlorophyll

d)

DNA and RNA

9.

Cellulose, the most important structural component of plant cell walls, is an

example of a _____.

a)

carbohydrate

b)

protein

c)

lipid

d)

nucleic acid

10.

Three of the four biomolecules are found within the cell membrane;

_____ are not.

a)

lipids

b)

nucleic acids

c)

proteins

d)

carbohydrates

11.

Basic units of cabohydrates.

a)

simple sugars

b)

amino acids

c)

fatty acids and glycerol

d)

nucleotides

12.

Basic units of proteins.

a)

simple sugars

b)

fatty acids and glycerol

c)

nucleotides

d)

amino acids

13.

Basic units of lipids.

a)

nucleotides

b)

amino acids

c)

simple sugars

d)

fatty acids and glycerol

14.

An example of simple sugar (monosaccharide).

a)

glucose

b)

sucrose

c)

starch

d)

glycogen

15.

An example of larger sugar molecule (disaccharide).

a)

glucose

b)

sucrose

c)

cellulose

d)

glycogen

16.

Two examples of much larger sugar molecules (polysaccharides).

a)

starch

b)

sucrose

c)

glucose

d)

glycogen

17.

Total number of amino acids in plant and animal cells.

a)

15

b)

17

c)

19

d)

20

18.

State of fats at room temperature.

a)

solids

b)

liquids

c)

gases

19.

State of oils at room temperature.

a)

solids

b)

liquids

c)

gases

20.

Lipids are important in forming _____________.

a)

DNA

b)

RNA

c)

cell membanes

d)

cytoplasm

21.
Which biomolecule are in starches and fibers?
a)
Lipid
b)
Protein
c)
Nucleic Acid
d)
Carbohydrate
22.

Which biomolecule is made of nucleotides and contains DNA?

a)
Carbohydrate
b)
Lipids
c)
Protein
d)
Nucleic Acid
23.

Which biomolecule helps form muscles?

a)

Nucleic Acid

b)

Carbohydrate

c)

Protein

d)

Lipids

24.
Which biomolecule is responsible for insulation and energy storage?
a)
Protein
b)
Nucleic Acid
c)
Lipid
d)
Carbohydrate
25.
Which biomolecule is made of amino acids?
a)
Nucleic Acid
b)
Carbohydrate
c)
Protein
d)
Lipid
26.
Which biomolecule is your main source of quick energy?
a)
Nucleic Acid
b)
Protein
c)
Lipid
d)
Carbohydrate
27.
Which biomolecule contains fats and oils?
a)
Proteins
b)
Nucleic Acid
c)
Lipids
d)
Carbohydrate
28.
Which biomolecule contain your genetics?
a)
Carbohydrate
b)
Lipid
c)
Nucleic Acid
d)
Protein
29.

Which of the following is represented in the image?

a)

Nucleotide

b)

Carbohydrate

c)

Lipid

d)

Protein

30.

What is a function of carbohydrates?

a)

To provide energy to living organisms

b)

The provide the structure in muscles

c)

Providing insulation

d)

Storing your genetic information

31.

Which of the following is a carbohydrate?

a)

DNA

b)

Protein

c)

Sugars

d)

Fats

32.

Which of the following is NOT a polymer?

a)

Starch

b)

Nucleic acids

c)

Protein

d)

Lipids

33.

What is the monomer for carbohydrates?

a)

Monosaccarides

b)

Fatty Acids

c)

Amino Acids

d)

Nucleotides

34.

What is the monomer for Lipids?

a)

Monosaccarides

b)

Fatty Acids

c)

Amino Acids

d)

Nucleotides

35.

What is the monomer for proteins?

a)

Monosaccarides

b)

Fatty Acids

c)

Amino Acids

d)

Nucleotides

36.

Which are examples of a carbohydrate?

a)

glucose, pasta, bread

b)

fats, oils, waxes

c)

meats, enzyme, lactase, eggs

d)

DNA, RNA

37.

Which of the following is found in plant cell walls?

a)

Amylose

b)

Cellulose

c)

Amylopectin

d)

Starch

e)

Glycogen

38.
Amino acids all have the same general structure except for the:
a)
Amino Group
b)
Carboxyl Group
c)
'R' Group
d)
Carbonyl Group
39.
The bond that joins amino acids are called:
a)
Peptide Bonds
b)
Ester Bonds
c)
Glycosidic Linkages
d)
Phosphodiester Bonds
40.
The structure of proteins can be changed by environmental factors such as temperature or pH.
a)
True
b)
False
41.

Saturated fats have all of the following characteristics except:

a)

they are solid at room temperature

b)

they have single bonds within the carbon chain

c)

they are usually obtained from animal sources

d)

they tend to dissolve in water easily

42.

Phospholipids are important components of ________.

a)

the plasma membrane of cells

b)

the ring structure of steroids

c)

the waxy covering on leaves

d)

the double bond in hydrocarbon chains

43.

Large bodies of water, such as lakes and oceans, do not quickly fluctuate in temperature. What is the reason for this phenomenon?

a)

Water is an acid.

b)

Water is a versatile solvent.

c)

Water has a high specific heat.

d)

Water acts as a buffer.

44.

Water is able to dissolve sodium chloride because

a)

The polar areas of water molecules attract the oppositely charged ions of sodium chloride

b)

The shape of the water molecules pushes the sodium and chloride ions apart

c)

The oxygen in the water molecules reacts with the sodium and chloride ions

d)

Water molecules and sodium chloride are covalently bonded

45.
Carbohydrates, proteins and lipid monomers are joined in reactions called...
a)
Condensation Reactions
b)
Hydrolysis Reactions

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