wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

Biomolecules

Total questions: 111

Worksheet time: 1hrs 2mins

Name
Class
Date
1.

Which elements are carbohydrates primarily composed of?

a)

Carbon, hydrogen, and oxygen

b)

Nitrogen, hydrogen, and oxygen

c)

Carbon, nitrogen, and sulfur

d)

Hydrogen, oxygen, and phosphorus

2.

What is the standard ratio of atoms present in carbohydrates?

a)

(CH2O)n

b)

(C2H2O)n

c)

(CH4O)n

d)

(C2HO2)n

3.

Which of the following is a pentose sugar and a core component of RNA nucleotides?

a)

Ribose

b)

Glucose

c)

Sucrose

d)

Fructose

4.

How do α-glucose and β-glucose differ from each other?

a)

By the orientation of the hydroxyl group (–OH) attached to the 1′–carbon atom

b)

By the number of carbon atoms in the ring

c)

By the presence of a phosphate group

d)

By the presence of a nitrogen atom

5.

What is released as a by-product when monosaccharides are joined together by glycosidic linkages to form polysaccharides?

a)

Water (H2O)

b)

Oxygen (O2)

c)

Carbon dioxide (CO2)

d)

Glucose

6.

Which of the following is a primary function of carbohydrates in cells?

a)

Long-term energy storage

b)

Short-term energy storage

c)

Structural support only

d)

DNA replication

7.

What is the main difference between amylose and amylopectin in starch molecules?

a)

Amylose is branched, amylopectin is helical

b)

Amylose is helical, amylopectin is branched

c)

Both are branched

d)

Both are helical

8.

Which of the following statements about glycogen is correct?

a)

Glycogen is found in plants and is unbranched

b)

Glycogen is found in animals and is highly branched

c)

Glycogen is found in plants and is helical

d)

Glycogen is found in animals and is unbranched

9.

How do glycoproteins on red blood cells help the immune system?

a)

They provide energy for the cell

b)

They act as identification tags for immune cells

c)

They help in DNA replication

d)

They store genetic information

10.

Which of the following is a common dietary source of the monosaccharide glucose?

a)

Table sugar

b)

Honey

c)

Cheese

d)

Olive oil

11.

Which of the following is a disaccharide?

a)

Glucose

b)

Fructose

c)

Sucrose

d)

Cellulose

12.

Where is glycogen primarily stored in animals?

a)

Blood plasma

b)

Liver and muscles

c)

Skin cells

d)

Kidneys

13.

What is the main function of glycogen in animals?

a)

Structural support

b)

Long-term fat storage

c)

Short-term energy storage

d)

Hormone production

14.

Which of the following best describes the structure of starch?

a)

Linear chains of glucose only

b)

Branched and unbranched chains of glucose

c)

Chains of amino acids

d)

Chains of fatty acids

15.

Which type of starch is more easily digested by humans?

a)

Amylose

b)

Amylopectin

c)

Cellulose

d)

Glycogen

16.

Which of the following is NOT a monosaccharide?

a)

Glucose

b)

Fructose

c)

Lactose

d)

Galactose

17.

Which disaccharide is found in milk?

a)

Sucrose

b)

Maltose

c)

Lactose

d)

Cellulose

18.

What is the main storage form of carbohydrate in plants?

a)

Glycogen

b)

Starch

c)

Cellulose

d)

Sucrose

19.

Which of the following best describes the structure of cellulose?

a)

Branched chains of glucose

b)

Unbranched chains of glucose with β(1→4) linkages

c)

Chains of fructose

d)

Chains of amino acids

20.

Which monosaccharide is commonly found in fruit?

a)

Glucose

b)

Fructose

c)

Galactose

d)

Ribose

21.

Which of the following statements about glycogen is correct?

a)

It is found in high amounts in plants

b)

It is a highly branched polysaccharide

c)

It is a type of disaccharide

d)

It is stored in the bones

22.

Which of the following best describes the storage of disaccharides in the human body?

a)

Disaccharides are stored in the liver

b)

Disaccharides are broken down into monosaccharides for storage

c)

Disaccharides are stored in muscle tissue

d)

Disaccharides are stored in adipose tissue

23.

The energy in the Carbohydrate molecule is located in the ...

a)

Water molecule present in each polymer

b)

The high energy bonds that exist between the Carbon and Hydrogen atoms within the molecule.

c)

Glycogen which is stored by the liver for later use.

d)

Radical molecule that is attached as a biomarker

24.

The body's prefered energy source is.... what molecule can the cell use to make energy? All Carbohydrates are broken down into this for use by the cell.

a)

Galactose

b)

Fructose

c)

Cytosine

d)

Glucose

25.

Polysaccharides are

a)

macromolecules made of long chains of monosaccharides.

b)

macromolecules made from fatty acids attached in a long repeating chain.

c)

2-3 glucose molecules in a pattern

d)

many proteins linked together with a phosphodiester bond.

26.

Carbohydrates attach to molecules, particularly in the cell membrane, to allow communication between molecules. In this way carbohydrates act as.....

a)

Biomarkers

b)

Hormones

c)

Enzymes

d)

Cholesterol

27.

What macromolecule is this?

a)

A protein= alanine

b)

A sugar= glucose

c)

A fatty acid= steric acid

d)

A nucleic acid= deoxyribonucleic acid.

28.

Some carbohydrates are indigestible to humans. An example of this would be....

a)

Biomarkers

b)

Lactase

c)

All disaccharides

d)

Cellulose and chitin ( found in the exoskeletons of insects)

29.

The process where a large polymer is chemically broken down into a smaller monomer is called...

a)

Dehydration Synthesis

b)

Hydrolysis

30.

What is pictured below?

a)

Lipids

b)

Monosaccharide

c)

Disaccharide

d)

Polysaccharide

31.

What is pictured below?

a)

Carbohydrate

b)

Lipid

c)

Polysaccharide

d)

Saturated Fat

e)

Unsaturated Fat

32.

Which amino acid can make disulfide bonds?

a)

Cysteine

b)

Methionine

c)

Isoleucine

d)

Valine

33.

The R group of this amino acid is ___ and the hydrogens attached

a)

the black carbons

b)

the blue nitrogen

c)

The red carbonyl

d)

The green carbon

34.

This amino acid is

a)

polar

b)

nonpolar

35.

This amino acid is ____ because its R group has an OH

a)

Polar

b)

Non-polar

36.

What are the key elements of an amino acid ? (do not consider the side chain)

a)

Si, N, O, H

b)

N, C, S, H

c)

C, N, P, He

d)

C, N, O, H

37.

Amino acids are classified based on their chemical properties of ?

a)

Amine group

b)

Carboxylic group

c)

Side chain

d)

Benzine group

38.

Pick the correct "Non-polar" amino acid

a)

b)

c)

d)

39.

What is an amino acid , which contains a "Acidic" side chain ?

a)

b)

c)

d)

40.

What is an amino acid , which contains a "Base" side chain ?

a)

b)

c)

d)

41.

What is an amino acid , which contains a "Neutral" side chain ?

a)

b)

c)

d)

42.

What is the amino acid which contains smallest side chain ?

a)

Alanine (A) - Ala

b)

Serine (S) - Ser

c)

Glycine (G) - Gly

d)

Tyrosine (Y) - Tyr

43.

What is the amino acid which contains 2 carboxylic groups ?

a)

Alanine (A) - Ala

b)

Serine (S) - Ser

c)

Aspartate (D) - Asp

d)

Tyrosine (Y) - Tyr

44.

Select the amino acid group which contains "Aromatic" side chain

a)

Methionine & Pheylalanine

b)

Tryptophan & Glutamate

c)

Pheylalanine & Tryptophan

d)

Lysine & Hisidine

45.

Select correct name for the amino acid shown

a)

Ser

b)

Phe

c)

Tyr

d)

Trp

46.

Which amino acid has the one letter code, G?

a)

Glycine

b)

Glutamine

c)

Glutamate

d)

Arginine

47.

What amino acid has the one letter code of T?

a)

Tryptophan

b)

Tyrosine

c)

Threonine

d)

Phenylalanine

48.

Which amino acid has the three letter code Glu?

a)

Glutamine

b)

Glutamate

49.

Which amino acid has the three letter code of Asp?

a)

Asparagine

b)

Aspartate

50.
The bond that joins amino acids are called:
a)
Peptide Bonds
b)
Ester Bonds
c)
Glycosidic Linkages
d)
Phosphodiester Bonds
51.

If a methyl group (-CH3), which does not like water, were at the 'R', the amino acid would likely be:

a)

Hydrophobic

b)

Hydrophilic

c)

Ionic

d)

Acidic

52.
Amino acids all have the same general structure except for the:
a)
Amino Group
b)
Carboxyl Group
c)
'R' Group
d)
Carbonyl Group
53.
The primary sequence of a protein refers to the:
a)
Order of amino acids
b)
α-Helix or β-Pleated Sheet
c)
Interaction of subunits
d)
Hydrogen Bonding
54.
Structures like an α-Helix are formed because of:
a)
Hydrophobic Interactions
b)
DiSulphide Bridges
c)
Salt Bridges
d)
Hydrogen Bonding
55.
The number of amino acids used to produce proteins for all living things is:
a)
20
b)
∞
c)
15
d)
42
56.
The amino acid isomer that is used to produce the proteins of all living things is the 
a)
L-Isomer
b)
D-Isomer
c)
α-Isomer
d)
β-Isomer
57.
The amino acid that results in disulphide bridges is:
a)
Cysteine
b)
Alanine
c)
Glutamic Acid
d)
Valine
58.
The structure of proteins can be changed by environmental factors such as temperature or pH.
a)
True
b)
False
59.
The sequence of amino acids is determined by:
a)
Genes
b)
Hydrogen Bonds
c)
Like Dissolves Like
d)
pH
60.

Are these statements about amino acids true or false?

In the solid state amino acids exists as zwitterions

a)

true

b)

false

61.

Are these statements about amino acids true or false?

Peptide links can undergo hydrolysis by reflux with hydrochloric acid

a)

true

b)

false

62.

Which of these structures is a zwitterion?

a)
b)
c)
63.

What's the correct definition of these keywords?

zwitterions

a)

Amino acid molecules with a negative charge on the amine group in the form of COO- and a positive charge on the carboxylic acid group in the form of NH3+

b)

Amino acid molecules with a positive charge on the amine group in the form of NH3+ and a negative charge on the carboxylic acid group in the form of COO-

c)

Amino acid molecules with a negative charge on the amine group in the form of NH3- and a positive charge on the carboxylic acid group in the form of COO+

64.

The structure below is the amino acid valine. What is its structure when in a solution of high pH?

a)
b)
c)
65.

Why are many enzymes soluble in water?

a)

They contain large numbers of hydrogen bonds

b)

They contain many amino acids with hydrophilic side chains

c)

they contain an active site

66.

Which one is an acidic amino acid?

a)
b)
67.
How many different amino acids are there?
a)
15
b)
20
c)
25
d)
30
68.
The diagram shows the structure of an amino acid. Which type of molecule is formed from amino acids?
a)
lipids
b)
proteins
c)
carbohydrates
d)
nucleic acids
69.
When a protein unfolds, it is
a)
Denatured
b)
Building
c)
Adding amino acids
d)
Making food
70.
The polymer which folds into proteins
a)
Polypeptide
b)
Amino Acids
c)
Nucleic Acids
d)
Polynucleotides
71.
How many structures or stages are there in proteins?
a)
1
b)
2
c)
3
d)
4
72.
What gives a protein its unique shape?
a)
the unique sequence of amino acids in its polypeptide chain
b)
the unique folding due to the sequence of amnio acids in the polypeptide chain
c)
hydrogen bonding & unique interactions between the 'R' groups
d)
all of these
73.

What is the central atom in the structure of an amino acid?

a)

Gamma (γ) carbon

b)

Delta (δ) carbon

c)

Alpha (α) carbon

d)

Beta (β) carbon

74.

Which type of amino acids must be obtained from the diet?

a)

Non-essential amino acids

b)

Essential amino acids

c)

Synthetic amino acids

d)

Conditional amino acids

75.

What is true of all proteins that have a quaternary structure?

a)

they consist of four polypeptides

b)

they can attach to and release oxygen

c)

they consist of more than one polypeptide

d)

they contain iron

76.

Which element is found in all polypeptides but is not found in carbohydrates?

a)

C

b)

O

c)

H

d)

N

77.

What is the effect of polar amino acids on the tertiary structure of proteins?

a)

They cause the protein to fold into a helix

b)

They cause the protein to form a β-sheet

c)

They can form hydrogen bonds that contribute to protein folding

d)

None of the above

78.

What is the role of R-groups in polypeptides?

a)

They determine the properties of assembled polypeptides

b)

They form the backbone of the polypeptide chain

c)

They aid in the process of transcription

d)

None of the above

79.

Which colored box highlights the carboxyl?

a)

Darker Blue (left)

b)

Turquoise (top)

c)

Orange (right)

d)

Red (bottom)

e)

Purple (middle)

80.

Which describes the functions of proteins in living things?

a)

structural, transport, signaling, catalysts, etc.

b)

stores and transmits genetic information

c)

stores energy and makes up cell membranes

d)

quick energy and forming cell structure

81.

Lipids are soluble in

a)

non-polar organic solvents

b)

water

c)

polar organic solvents

82.

rancidity occurs in triacylglycerols containing

a)

saturated fatty acids

b)

unsaturated fatty acids

c)

polar fatty acids

83.

fatty acid lack double bonds is called unsaturated fatty acids

a)

true

b)

false

84.

Triglycerides are lipids consisting of

a)

three glycerol + one fatty acid

b)

one glycerol +one fatty acid

c)

one glycerol + three fatty acid

85.

The final end product is

a)

alcholol

b)

sterol

c)

triacylglycerides

86.

Unsaturated acids have higher melting points than saturated.

a)

True

b)

False

87.

The most abundant steroid in the body is

a)

Cholesterol

b)

Glucose

c)

Estradiol

d)

Progesterone

88.

The myelin sheath is associated with which of the following diseases

a)

Malaria

b)

Meningitis

c)

Multiple sclerosis (MS)

d)

Pneumonia

89.

The main component in lipid bilayers are _____.

a)

Complex lipids

b)

Steroids

c)

Prostaglandins

d)

Thromboxanes

90.

A sex hormone with an aromatic ring:

a)

Progesterone

b)

Testosterone

c)

Estradiol

d)

Aldosterone

91.

Fats and oils do not have color, but do have an odor and taste.

a)

True

b)

False

92.

Lipid membranes have _ layers.

a)

1

b)

2

c)

3

d)

4

93.

High-Density Lipoproteins (HDL) are known as

a)

Good cholesterol

b)

Bad cholesterol

c)

VLDL

94.

How many rings are associated with a steroid structure?

a)

2

b)

3

c)

4

d)

5

95.

Where is cholesterol synthesized?

a)

In the liver.

b)

In the pancreas.

c)

In the spleen.

d)

In the kidneys.

96.

Which of the following is generally called "bad" cholesterol?

a)

High-density lipoprotein

b)

Low-density lipoprotein

c)

Very-low-density lipoprotein

d)

Chylomicrons

97.

Adrenocorticoid hormones are products of the adrenal gland. Which of the following is not an adrenocorticoid hormone?

a)

Aldosterone

b)

Testosterone

c)

Cortisol

d)

Cortisone

98.

What ingredient is common in sports drinks?

a)

Alanine

b)

Histidine

c)

Serine

d)

Taurine

99.

Why are unsaturated fatty acids in the lipid bilayer of membranes?

a)

They have a high melting point.

b)

They are polar.

c)

They give them membrane fluidity.

100.

Where did the name "sphingolipid" come from?

a)

It contains a sphingosine.

b)

It was named after the man who discovered it.

c)

It was named after the Greek mythological creature, the sphinx.

d)

It is found in the sphingo cortex in the brain.

101.

Saturated fats have ____ bonds between atoms.

a)

single

b)

double

c)

multiple

d)

none

102.

What kind of lipids acts as chemical messengers?

a)

hormones

b)

phospholipids

c)

waxes

d)

steriods

103.

What kind of lipid makes up the major portion of the cell membrane?

a)

phosphlipids

b)

steriods

c)

waxes

d)

fats

104.

What part of a phospholipid repels water?

a)

fatty acid (hydrophobic)

b)

Phophate group (Hyrdophilic)

105.

What part of a phospholipid attracts water?

a)

Hydrophobic (fatty acid)

b)

Hydrophilic (phosphate group)

106.

type of lipid used mainly as a waterproof covering

a)

wax

b)

steriod

c)

lipid

d)

phospholipid

107.

type of lipid used to make cetain hormones

a)

wax

b)

steriod

c)

lipid

d)

phospholipid

108.

type of lipid that froms cell membranes (2 fatty acids, 1 glycerol, and a phosphate)

a)

phospholipid

b)

lipid

c)

steriod

d)

wax

109.

type of lipid made of 3 fatty acids and 1 glycerol

a)

fats

b)

lipids

c)

wax

d)

steriods

110.
a)

Saturated

b)

Unsaturated

111.
a)

saturated

b)

unsaturated

Similar Resources on Wayground

Special Senses

110 questions

Special Senses

quiz

Worksheet

•

12th Grade - University

Reproductive, Development & Genetics

110 questions

Reproductive, Development & Genetics

quiz

Worksheet

•

12th Grade - University

Year 7 ESS

110 questions

Year 7 ESS

quiz

Worksheet

•

7th Grade - University

Horticulture Semester Exam

107 questions

Horticulture Semester Exam

quiz

Worksheet

•

9th Grade - University

only a few can complete this quiz

111 questions

only a few can complete this quiz

quiz

Worksheet

•

6th Grade - Professio...

Exam 3

106 questions

Exam 3

quiz

Worksheet

•

University

KOGIN

106 questions

KOGIN

quiz

Worksheet

•

University