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Biological Molecules and Functions

Total questions: 136

Worksheet time: 2hrs 3mins

Name
Class
Date
1.
Phospholipids have a _________ head and a __________ tail.
a)
hydrophilic, hydrophobic
b)
hydrophobic, hydrophilic 
2.
Enzymes are _________ that __________ chemical reactions.
a)
proteins, slow down
b)
proteins, speed up
c)
lipids, slow down
d)
lipids, speed up
3.
RNA is an example of a ...
a)
nucleic acid
b)
phosphate group
c)
protein
d)
carbohydrate
4.
The cell membrane is formed mostly by...
a)
carbohydrates
b)
proteins
c)
phospholipids
d)
nucleic acids
5.
Nucleotides are made up of three parts. The three parts are...
a)
DNA, RNA, and a sugar
b)
a lipid, a fat, and an oil
c)
a carbohydrate, a protein, and a fat
d)
a sugar, a phosphate, and a base
6.
Regulatory substances that are in an organism are called...
a)
enzymes
b)
hormones
7.
___________ are the main source of energy for cells.
a)
Proteins
b)
Lipids
c)
Nucleic acids
d)
Carbohydrates
8.

The information in nucleic acids can be used to make which biomolecule?

a)

protein

b)

lipid

c)

carbohydrate

d)

can't be used to make a biomolecule

9.
Which biomolecule is this a picture of?
a)
Protein
b)
Nucleic Acid
c)
Lipid
d)
Carbohydrate
10.
Which biomolecule is responsible for insulation and energy storage?
a)
Protein
b)
Nucleic Acid
c)
Lipid
d)
Carbohydrate
11.
Which biomolecule includes fats, such as triglycerides, oils, waxes, and steroids (cholesterol); insoluble in water; provides energy storage, insulation, part of cell membrane, and hormones 
a)
Nucleic Acid
b)
Lipids
c)
Carbohydrate
d)
Protein
12.
Glucose is an example of a
a)
Carbohydrate
b)
Lipid
c)
Protein
d)
Nucleic Acid
13.
All of the following are parts of a nucleotide except?
a)
Phosphate Group
b)
Nitrogen Base
c)
Amino Group
d)
Deoxyribose/Ribose sugar
14.
Which of the following is a large molecule of many simple sugars?
a)
Monosaccharide
b)
Disaccharide
c)
Polysaccharide
d)
Googlesaccharide
15.

Attractions between oppositely charged functional groups.

a)

Hydrogen bonds

b)

Salt bridges

c)

Van der Waals forces

d)

Covalent bonds

16.

Joining two molecules by splitting out H2O.

a)

Hydrolysis reactions.

b)

Condensation reactions.

c)

Dehydration synthesis.

d)

Oxidation reactions.

17.
The monomer, building block, of proteins
a)
Amino Acid
b)
Fatty Acid
c)
Nucleotide
d)
monosaccharide
18.
Combines with 3 fatty acid chains to make up a triglyceride; part of the monomer of lipids
a)
Amino Acid
b)
Fatty Acid
c)
Glycerol
d)
Nucleotide
19.
The above diagram represents
a)
A monosaccharide
b)
A monomer of a carbohydrate
c)
A sugar
d)
All of the above
20.
The above diagram would have the molecular formula of:
a)
CH2OH
b)
C6H6O6
c)
C5H11O5
d)
C6H12O6
21.
The image is an example of a
a)
Lipid
b)
Polysaccaride
c)
Protein
d)
Lipid (polypeptide)
22.

Primary structure of proteins

a)

amino acids linked together

b)

beta-pleated sheets

c)

3-D folded conformation

d)

alpha helices

23.

Cellular membrane

a)

phospholipid

b)

triglyceride

c)

cholesterol

d)

glycogen

24.

Primary long-term energy storage molecule

a)

phospholipid

b)

triglyceride

c)

steroid

d)

lipoprotein

25.

Primary structure of proteins

a)

amino acids linked together

b)

beta-pleated sheets

c)

3-D folded conformation

d)

alpha helices

26.

Which of the following is not a nitrogen base of RNA?

a)

Guanine

b)

Thymine

c)

Uracil

d)

Adenine

27.

Which of the following is not a nitrogen base of DNA?

a)

Uracil

b)

Thymine

c)

Guanine

d)

Cytosine

28.

The bonding for the nitrogenous bases.

a)

phosphodiester bond

b)

ionic bond

c)

hydrogen bond

d)

peptide bond

29.

The bonding for DNA's backbone.

a)

phosphodiester bond

b)

hydrogen bond

c)

peptide bond

d)

covalent bond

30.

Its major function is protein synthesis?

a)

DNA

b)

RNA

c)

Lipids

d)

Polysaccharide

31.

Compounds that are composed of the same number and type of atoms but have them arranged in different ways are ___________.

a)

isomers

b)

isotopes

c)

polymers

d)

alkanes

32.

How many structural isomers exist for hexane

a)

three

b)

two

c)

five

d)

four

33.

A structural isomer of pentane is?

a)

2,2-dimethylbutane

b)

2-methylbutane

c)

1-methylpropane

d)

1-methylpentane

34.

Given a formula representing a compound:Which formula represents an isomer of this compound?

a)
b)
c)
d)
35.

Which is an isomer of

a)
b)
c)
d)
36.
Are the compounds shown isomers
a)
Yes
b)
No
37.
Are the following molecules isomers?
a)
Yes
b)
No
38.
Are the following molecules isomers?
a)
Yes
b)
No
39.

What is the IUPAC name for the following compound: CH3CHO?

a)

propanal

b)

methanal

c)

ethanoic acid

d)

ethanal

40.

Compare the boiling points of carboxylic acids with aldehydes and ketones.

a)

Carboxylic acids have higher boiling points than aldehydes and ketones.

b)

Aldehydes and ketones have higher boiling points than carboxylic acids.

c)

Carboxylic acids have lower boiling points than aldehydes and ketones.

d)

Aldehydes and ketones have similar boiling points to carboxylic acids.

41.

Provide the IUPAC name for the following compound: CH3COCH3.

a)

butanone

b)

propanone

c)

ethanal

d)

methanol

42.

What is the product of the reaction between a carboxylic acid and an alcohol?

a)

Aldehyde

b)

Ketone

c)

Ester

d)

Alkane

43.

What is organic product other than water that forms in the reaction between the following molecule and ethanol?

a)

Ethyl butanoate

b)

Ethyl pentanoate

c)

Ethyl Propanoate

d)

Butyl ethanoate

44.

What is the name of the following molecule?

a)

N-propylmethanamide

b)

N-ethylmethanamide

c)

N-methylethanamide

d)

N-ethylethanamide

45.

What is the name of the following molecule?

a)

3-butyl-2-methylpentanoic acid

b)

5-ethyl-6-methyloctanoic acid

c)

4-ethyl-3-methyl-2-octanone

d)

3-ethyl-2-methyloctanoic acid

46.
Classify the compound based on the functional group present.
a)
aldehyde
b)
ketone
c)
carboxylic acid
d)
ester
47.
Classify the compound based on the functional group present.
a)
aldehyde
b)
ketone
c)
carboxylic acid
d)
ester
48.
Name this carbonyl compound according to IUPAC nomenclature:
a)
3-benzyl-3,3-methylbutanone
b)
3,3-dimethyl-4-phenylbutanone
c)
4-phenyl-3,3-dimethylbutanone
d)
1-phenyl-3,3-dimethylbutanone
49.

Which one is the formula of ethanal?

a)
b)
c)
d)
50.

Which one is the formula of a ketone?

a)
b)
c)
d)
51.

Name this molecule:

a)

Pentanoic acid

b)

2-hydroxy-2-methylbutan3-one

c)

3-hydroxy-3-methylbutane-2-one

d)

2-oxo-3-methylbutan-3-ol

52.

Is this an aldehyde or ketone?

a)

Aldehyde

b)

Ketone

53.
What is the molecular formula of Benzene?
a)
C6H12
b)
C6H6
c)
C6H10
d)
C8H8
54.

Name the following compound

a)

Benzene

b)

Benzol

c)

Phenyl

d)

Phenol

55.

Name the following

a)

2,4,6-Trinitrotoluene

b)

Trinitro benzene

c)

1,3,5-Trinitrotoluene

56.

Name the compound

a)

Methane benzene

b)

Toluene

c)

Benzene methane

d)

methane phenyl

57.

Which is the correct drawing of o-bromonitrobenzene?

a)
b)
c)
d)
58.

Which is the correct drawing of 1,3 -dibromo-2-nitrobenzene?

a)
b)
c)
d)
59.

What is the name of this compound?

a)

o-pheno

b)

m-phenol

c)

o-chlorophenol

d)

p-chlorophenol

e)

m-chlorophenol

60.

What is the common name of the parent chain of the following structure

a)

toluene

b)

aniline

c)

benzene

d)

phenol

61.

Which compound below is aromatic?

a)
b)
c)
d)
62.
5 Which of these functional groups is an amino group?
a)
a. 1
b)
b. 2
c)
c. 3
d)
d. 4
63.

The boiling points of alkane molecules increase as their molecular sizes increase.

a)

True

b)

False

64.

If an alkane has 10 carbon atoms, how many hydrogen atoms will it have?

a)

20

b)

22

c)

40

d)

42

65.
The molecular formula for Heptane is
a)
C4H10
b)
C8H18
c)
C5H12
d)
C7H16
66.

Hydrocarbon boiling points increase when branching increases.

a)

true

b)

false

67.

Why is methane used as a fuel?

a)

It burns and releases energy (Exothermic reaction)

b)

It is a gas

c)

It is odourless

d)

It has a low boiling point

68.

Fats, oils, waxes, cholesterol, hormones

a)

carbohydrates

b)

lipids

c)

proteins

d)

nucleic acids

69.

This molecule is a(n) ____________.

a)

nucleic acid

b)

lipid

c)

protein

d)

carbohydrate

70.

Classify the compound based on the functional group present.

a)

Ketone

b)

Carboxylic acid

c)

Ester

d)

Ether

71.

Classify the compound based on the functional group present.

a)

Ether

b)

Ketone

c)

Ester

d)

Carboxylic acid

72.

Name the structure.

a)

4-hexanol

b)

3-hexanol

c)

4-heptanol

d)

3-heptanol

73.

Name this structure.

a)

methyl ethanoate

b)

ethyl methanoate

c)

ethyl methyl ether

d)

methyl ethyl ether

74.

What is the major product when methane undergoes halogenation with chlorine?

a)

Chloroform (CHCl3)

b)

Chloroethane (C2H5Cl)

c)

Dichloromethane (CH2Cl2)

d)

Chloromethane (CH3Cl)

75.

What is the general equation for the halogenation of alkanes?

a)

alkane + halogen -> haloalkane + hydrogen halide

b)

alkane + halogen -> haloalkane + water

c)

alkane + halogen -> alkene + hydrogen halide

d)

alkane + halogen -> haloalkane + oxygen

76.

What is the process of adding bromine to an alkane called?

a)

Oxidation

b)

Hydrolysis

c)

Esterification

d)

Halogenation

77.
This picture shows what type of lipid?
a)
unsaturated fat
b)
wax
c)
saturated fat
d)
steroid
78.
The following are characteristics and functions of waxes EXCEPT:
a)
solid at room temperature
b)
water proof
c)
low melting point
d)
forms a protective covering to prevent water loss
79.
Triglycerides include both:
a)
fats and oils
b)
waxes and steroids
c)
steroids and phospholipids
d)
saturated fats and waxes
80.
Saturated fats are _____ at room temperature.
a)
solids
b)
gases
c)
liquids
d)
non of the above
81.
What is a triglyceride?
a)
a glycerol joined to 3 fatty acids
b)
a glycogen joined to 2 fatty acids
c)
4-fused carbon rings
d)
long chains of hydrocarbons and an alcohol.
82.

Which type of molecule is shown?

a)

saturated fatty acid

b)

unsaturated fatty acid

c)

cholesterol

d)

starch

83.
What type of carbohydrate is this?
a)
polysaccharide
b)
disaccharide
c)
monosaccharide
d)
it isn't a carbohydrate
84.

In the phospholipid, the polar head is considered what type of structure?

a)

hydrophobic

b)

hydrophillic

85.

Which of the following are true of an unsaturated fatty acid? (select all that apply)

a)

Lower melting point

b)

More stable

c)

At least one double bond

d)

Lower melting point

86.

What is this?

a)

nucleic acid

b)

amino acid

c)

monosaccharide

d)

carboxyl group

87.

Which part of an amino acid makes it different from other amino acids?

a)

Amino group

b)

Carboxyl group

c)

Hydrogen

d)

R group (side chain)

88.

Name given to the particular type of covalent bond that links two amino acids together?

a)

glycosidic linkage

b)

ester bond

c)

phosphodiester bond

d)

peptide bond

89.

What parts of two amino acids connect when a peptide bond is made?

a)

amino group and carboxyl group

b)

Hydrogen and R group

c)

R group and carboxyl group

d)

amino group and R group

90.

The order in which amino acids are linked in a polypeptide chain is called the protein's 

a)

Primary Structure

b)

Secondary structure

c)

Tertiary structure

d)

Quaternary structure

91.

An alpha helix and a beta pleated sheet are both examples of a protein's

a)

Primary structure

b)

Secondary structure

c)

Tertiary Structure

d)

Quaternary Structure

92.

Hydrogen bonds are most important in creating a protein's

a)

Primary structure

b)

Secondary structure

c)

Tertiary structure

d)

Quaternary structure

93.

This level of structure is caused by the interactions among the different R-groups in a protein

a)

Primary structure

b)

Secondary structure

c)

Tertiary structure

d)

Quaternary structure

94.

This picture illustrates

a)

Primary structure

b)

Secondary structure

c)

Tertiary structure

d)

Quaternary structure

95.

This image illustrates all the bonds that can play a role in creating a protein's

a)

Primary structure

b)

Secondary structure

c)

Tertiary structure

d)

Quaternary structure

96.

2 or more polypeptides combined together forms a protein's 

a)

Primary structure

b)

Secondary structure

c)

Tertiary structure

d)

Quaternary structure

97.

Proteins that catalyze chemical reactions are called

a)

hemoglobin

b)

enzymes

c)

collagen

d)

keratin

98.

The image illustrates

a)

Primary structure

b)

Secondary Structure

c)

Tertiary Structure

d)

Quaternary structure

99.

The monomers that make up proteins are

a)

nucleic acids

b)

amino acids

c)

carboxyl groups

d)

R-groups

100.

Which answer models central dogma?

a)

DNA to protein to RNA

b)

RNA to DNA to protein

c)

DNA to RNA to protein

d)

protein to RNA to DNA

101.

What is the result of translation?

a)

The synthesis of RNA from protein

b)

The synthesis of protein from RNA

c)

The synthesis of protein from DNA

d)

The synthesis of RNA from DNA

102.

What is the result of transcription?

a)

The synthesis of RNA from protein

b)

The synthesis of protein from RNA

c)

The synthesis of protein from DNA

d)

The synthesis of RNA from DNA

103.

At which organelle does translation occur?

a)

Nucleus

b)

Ribosome

c)

Mitochondria

d)

Golgi apparatus

104.

In which organelle does transcription occur?

a)

Nucleus

b)

Ribosome

c)

Mitochondria

d)

Golgi apparatus

105.

What role does the mRNA play in protein synthesis?

a)

mRNA modifies the original DNA strand

b)

mRNA mutates to form protein

c)

mRNA is the transcribed message from a DNA sequence

d)

mRNA moves the amino acids

106.

Codons represent a...

a)

triplet sequence of bases

b)

single sequence of bases

c)

quadruple sequence of bases

d)

pair of bases

107.

Codons are located on the...

a)

DNA

b)

mRNA

c)

rRNA

d)

tRNA

108.

How many codons are required for three amino acids?

a)

1

b)

2

c)

3

d)

4

109.

The process of DNA replication is called semi conservative because it results in

a)

none of these

b)

Two DNA molecules.  One original molecule and one with two new strands

c)

two exact copies with new strands

d)

two DNA molecules, each with 1 original strand and one new.

110.

Which type of monosaccharide is D-mannose?

a)

Aldopentose

b)

Ketohexose

c)

Aldoketose

d)

Aldohexose

111.
Disaccharides -
a)
glucose
b)
sucrose
c)
glycogen
d)
fructose
112.
The human body stores sugar (in muscles & liver) in the form of -
a)
cellulose
b)
glucose
c)
starch
d)
glycogen
113.
Disaccharides -
a)
glucose
b)
sucrose
c)
glycogen
d)
fructose
114.
What molecule is this
a)
sucrose
b)
protein
c)
glucose
d)
cellulose
115.
What type of carbohydrate is this?
a)
polysaccharide
b)
disaccharide
c)
monosaccharide
d)
it isn't a carbohydrate
116.

Milk and other dairy products contain what specific type of sugar?

a)

Glucose

b)

Milcrose

c)

Sucrose

d)

Galactose

117.

Two monosaccharides are joined by...

a)

Peptide bond

b)

Phosphodiester bond

c)

Glycosidic bond

d)

Hydrogen Bond

118.

Esters are known for......

a)

the bright colours

b)

flammability

c)

exploding

d)

fruity smell

119.

Steroid hormones are...

a)

Chemicals made of four carbon rings

b)

Derived from cholesterol

c)

are water insoluble, lipid soluble

d)

Examples are testosterone from testes and estrogen & progesterone from ovaries

120.
How many different amino acids are there?
a)
4
b)
20
c)
6
d)
46
121.

What type of macromolecule is this?

a)

carb

b)

lipid

c)

nucleic acid

d)

protein

122.

What is the major product for the following reaction?

a)
b)
123.

What product is formed when you react hydrogen with pent-3-ene?

a)

cyclopentane

b)

hex-3-ene

c)

pent-1-ene

d)

pentane

124.

Reactions that open up a double or triple bond to insert various atoms are called ___

a)

summation reactions

b)

addition reactions

c)

substitution reactions

d)

elimination reactions

125.

What is the major product?

a)
b)
c)
d)
126.

Name this structure.

a)

heptanoic acid

b)

heptane

c)

6-heptanone

d)

2-heptanone

127.

Name the molecule.


CH3CH2CH2CH2CH2CH2CH2COOH

a)

heptanoic acid

b)

octanoic acid

c)

octanol

d)

methy octanoate

128.

Classify the compound based on the functional group present.

a)

alkane

b)

alkene

c)

cyclic alkene

d)

aromatic

129.

Which functional group is present in this molecule? Select all that apply.

a)

alcohol

b)

amine

c)

aldehyde

d)

ketone

e)

ester

130.
Name the compound
a)
3-methyl-2-pentene
b)
2-ethyl-2-butene
c)
3-ethyl-2-butene
d)
1,1-dimethyl-propene
131.

Which functional group is shown?

a)

ester

b)

aldehyde

c)

ketone

d)

carboxylic acid

132.

Which functional group is shown?

a)

ester

b)

aldehyde

c)

ketone

d)

carboxylic acid

133.

Name this conpound:

a)

hexane

b)

hexene

c)

benzane

d)

benzene

134.

This is an example of what type of reaction?

a)

oxidation

b)

fermentation

c)

addition

d)

substitution

135.

This is an example of what type of reaction?

a)

oxidation

b)

esterification

c)

addition

d)

substitution

136.

This is a combustion equation; please complete and balance it:

C3H8 + O2 -->

a)

C3H8 + O2 --> CO2 + H2O

b)

C3H8 + 5O2 --> 3CO2 + 4H2O

c)

C3H8 + O2 --> C3H8O2

d)

2C3H8 + 2O2 --> 6CO2 + 8H2O

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