Generate Quiz 6A19E3A9D6EB9

1 / 100

What type of atom is the carbon atom?

PMC Practice 2
Biology
Biological Molecules
Carbon
Elimination Tool:

A) Divalent

B) Monovalent

C) Trivalent

D) Tetravalent

2 / 100

A globular protein consisting of more than one polypeptide chains belongs to:

Biology
Biological Molecules
Elimination Tool:

A) Primary structure

B) Secondary structure

C) Tertiary structure

Quaternary structure

3 / 100

The cell wall of most of the bacteria have a unique macromolecule called_______.

NTS 2012
Biology
Biological Molecules
Carbohydrates
Elimination Tool:

A) Cellulose

B) Chitin

C) Fibres

D) Fats

E) Peptidoglycan

4 / 100

Peptide bonds are formed between:

NUMS 2014
Biology
Biological Molecules
Proteins
Elimination Tool:

A) Hydrogen groups of adjacent amino acids

B) Non-functional groups of the amino acids

C) Carboxyl groups and amino groups

D) Functional groups and hydrogen groups of adjacent amino acids

5 / 100

Haemoglobin possesses:

Biology
Biological Molecules
Proteins
Elimination Tool:

A) Primary structure

B) Secondary structure

C) Tertiary structure

D) Quaternary structure

6 / 100

A cofactor tightly bound to the enzyme on the permanent basis is called:

Biology
Biological Molecules
Elimination Tool:

A) Activator

B) Coenzyme

C) Prosthetic group

D) Apo-enzyme

7 / 100

Which one of the following is found in both messenger RNA and DNA of a mammalian cell?

PMC 2020
Biology
Biological Molecules
Nucleic Acids
Elimination Tool:

A) Double helical structure

B) Ribose sugar

C) Thymine

D) Sugar – phosphate backbone

8 / 100

Mono-saccharides have a general formula represented by:

PMC 2020
Biology
Biological Molecules
Carbohydrates
Elimination Tool:

A) (CH2O)n

B) C(H2O)n

C) C2(H2O)n

D) C2(H2O)n

9 / 100

Peptide bonds are formed between:

NUMS 2014
Biology
Biological Molecules
Proteins
Elimination Tool:

A) Hydrogen groups of adjacent amino acids

B) Non-functional groups of the amino acids

C) Carboxyl groups and amino groups

D) Functional groups and hydrogen groups of adjacent amino acids

10 / 100

Haemoglobin exhibits:

Biology
Biological Molecules
Proteins
Elimination Tool:

A) Secondary Structure

B) Primary Structure

C) Quaternary Structure

D) Tertiary Structure

11 / 100

The fibrous proteins are __________ in aqueous medium.

2022 PMC Test 3
Biology
Biological Molecules
Proteins
Elimination Tool:

A) Soluble

B) Insoluble

C) Lest soluble

D) Readily soluble

12 / 100

In double helix of DNA, the two DNA strands are

Biology
Biological Molecules
Nucleic Acids
Elimination Tool:

A) coiled around a common axis

B) coiled around each other

C) coiled differently

D) coiled over protein sheath

13 / 100

Antibodies play important role against microorganisms and other pathogens to which type of proteins do they belong?

PMC Practice 17
Biology
Biological Molecules
Proteins
Elimination Tool:

A) Globular

B) Functional

C) fibrous

D) both a and b

14 / 100

When the hydroxyl group, -OH, of the carboxyl group, -COOH, of an amino acid is linked with the hydrogen of the amino group, -NH2, of another amino acid, ______ is released and a peptide bond is formed.

NUMS 2019 Reconduct
Biology
Biological Molecules
Proteins
Elimination Tool:

A) NH3

B) CO2

C) H2O

D) O2

15 / 100

The specific heat capacity of water is the number of calories required to raise the temperature of water from _____ ˚C is 1.0.

NUMS 2019 Reconduct
Biology
Biological Molecules
Water
Elimination Tool:

A) 15 to 16

B) 16 to 18

C) 15 to 20

D) 25 to 29

16 / 100

Which bond provides stability to complex carbohydrate molecule?

Academy Questions
Biology
Biological Molecules
Carbohydrates
Elimination Tool:

A) C-H

B) C-N

C) C-O

D) C-C

17 / 100

What are the most diverse molecules in the cell?

Biology
Biological Molecules
Proteins
Elimination Tool:

A) Lipids

B) Mineral salts

C) Proteins

D) Carbohydrates

18 / 100

Glycogen is how glucose is stored in the human body. Where is it most abundantly found?

PMC Practice 7
Biology
Biological Molecules
Carbohydrates
Elimination Tool:

A) Liver

B) Muscles

C) Both A and B

D) Kidneys

19 / 100

Glycogen is how glucose is stored in the human body. Where is it most abundantly found?

PMC Practice 7
Biology
Biological Molecules
Carbohydrates
Elimination Tool:

A) Liver

B) Muscles

C) Both A and B

D) Kidneys

20 / 100

Which of the following is soluble in hot water?

PMC Practice 5
Biology
Biological Molecules
Carbohydrates
Elimination Tool:

A) Starch

B) Glycogen

C) Amylose

D) Amylopectin

21 / 100

These are crystalline, water soluble, forming pyranose rings

Academy Questions
Biology
Biological Molecules
Carbohydrates
Elimination Tool:

A) Monosaccharides

B) Polysaccharides

C) Oligosaccharides

D) None of the above.

22 / 100

Glucose combines to form milk sugar.

Biology
Biological Molecules
Elimination Tool:

A) Glucose

B) Fructose

C) Galactose

D) Mannose

23 / 100

Which of the following is the least likely to be involved in stabilizing the three dimensional folding of most proteins?

Biology
Biological Molecules
Proteins
Elimination Tool:

A) Hydrogen Bonds

B) Electrostatic Interaction

C) Hydrophobic Interaction

D) Ester Bonds

24 / 100

Which one of the following is a non-reducing carbohydrate?

Biology
Biological Molecules
Carbohydrates
Elimination Tool:

A) Maltose

B) Sucrose

C) Lactose

D) Ribose 5- phosphate

25 / 100

Activators are usually derived from:

Academy Questions
Biology
Biological Molecules
Elimination Tool:

A) Vitamins

B) Carbohydrates

C) Proteins

D) Metal ions

26 / 100

The formula of cholesterol is:

PMC 2021 Tested
Biology
Biological Molecules
Elimination Tool:

A) C₂₄H₄₆O

B) C₂₇H₄₆O₃

C) None of these

D) C₂₇H₄₆O

27 / 100

Which of the following is the most complex sugar?

PMC Practice 30
Biology
Biological Molecules
Carbohydrates
Elimination Tool:

A) Monosaccharides

B) Oligosaccharide

C) Polysaccharide

D) Carbohydrates

28 / 100

Which of the following is the trace element ___?

PMC Sample 2
Biology
Biological Molecules
Introduction to Biological Molecules
Elimination Tool:

A) hydrogen

B) copper

C) oxygen

D) carbon

29 / 100

Which one the following fatty acids is more soluble in an organic solvent and has higher melting point?

PMC Practice 17
Biology
Biological Molecules
Lipids
Elimination Tool:

A) Acetic acid

B) Oleic acid

C) Palmitic acid

D) All of these options are correct

30 / 100

Irreversible modifications require the synthesis of which of the following?

PMC Sample 2
Biology
Biological Molecules
Proteins
Elimination Tool:

A) enzymes

B) carbohydrates

C) vitamins

D) proteins

31 / 100

Lecithin is formed by combining phosphatidic acid with ______:

NUMS 2020
Biology
Biological Molecules
Lipids
Elimination Tool:

A) Serine

B) Choline

C) Inositol

D) Ethanolamine

32 / 100

Which of the following combinations of base pair is absent in DNA?

Biology
Biological Molecules
Nucleic Acids
Elimination Tool:

A) A-T

B) C-G

C) A-U

D) T-A

33 / 100

Keratinized epithelium is found in:

PMC 2021 Tested
Biology
Biological Molecules
Proteins
Elimination Tool:

A) Bone

B) Muscle

C) Hair

D) Skin

34 / 100

Monosaccharides are major components of:

Biology
Biological Molecules
Nucleic Acids
Elimination Tool:

A) DNA, ATP. Ribulose bisphosphate and Cysteine

B) DNA, NAD and Insulin

C) DNA, NADP, ATP and Ribulose bisphosphate

D) DNA, RNA and Myosin

35 / 100

When an electron pair is shared between two atoms:

UHS 2010
Biology
Biological Molecules
Introduction to Biological Molecules
Elimination Tool:

A) Two covalent bonds are formed

B) Hydrogen bond is formed

C) Single covalent bond is formed

D) Ionic bond is formed

36 / 100

NAD is an example of ______:

NUMS 2020
Biology
Biological Molecules
Nucleic Acids
Elimination Tool:

A) Mononucleotide

B) Dinucleotide

C) Tri nucleotide

D) Tetra nucleotide

37 / 100

Which structural organization is most common in globular proteins?

PMC Practice 20
Biology
Biological Molecules
Proteins
Elimination Tool:

A) Primary structure

B) Secondary structure

C) Tertiary structure

D) Quaternary structure

38 / 100

Which of the following is a biological polymer?

PMC 2021 Tested
Biology
Biological Molecules
Carbohydrates
Elimination Tool:

A) Polystyrene

B) Plastic

C) Cellulose

D) Synthetic fibres

39 / 100

Which structure of protein gives information about the folding of a protein?

PMC Practice 28
Biology
Biological Molecules
Proteins
Elimination Tool:

A) Primary structure

B) Secondary structure

C) Tertiary structure

D) Quaternary structure

40 / 100

In an amino acid in which the R-group is H, its name will be

UHS 2011
Biology
Biological Molecules
Proteins
Elimination Tool:

A) Alanine

B) Glycine

C) Leucine

D) Valine

41 / 100

Which one of the following is an example of a competitive inhibitor?

Biology
Biological Molecules
Elimination Tool:

A) Glucose

B) Fumarate

C) Succinic acid

D) Malonate

42 / 100

Each β – chain of hemoglobin molecules contains ____ amino acids.

NUMS 2019 Reconduct
Biology
Biological Molecules
Proteins
Elimination Tool:

A) 136

B) 146

C) 235

D) 288

43 / 100

The simplest monosaccharide containing keto group is

UHS 2014
Biology
Biological Molecules
Elimination Tool:

A) Glyceraldehyde

B) Dihydroxyacetone

C) Glucose

D) Ribose

44 / 100

Glycine is:

PMC 2021 Tested
Biology
Biological Molecules
Proteins
Elimination Tool:

A) Zwitter ion

B) Basic

C) Acidic

D) None of these

45 / 100

Ester linkages occur in:

UHS 2019
Biology
Biological Molecules
Nucleic Acids
Elimination Tool:

A) Nucleic acids

B) Nucleus

C) Carbohydrates

D) Proteins

46 / 100

α(1→4) glycosidic linkage is present in

PMC Sample 4
Biology
Biological Molecules
Carbohydrates
Elimination Tool:

A) Maltose

B) Sucrose

C) Cellulose

D) Cellobiose

47 / 100

Identify the protein, which cannot be crystallized?

Biology
Biological Molecules
Proteins
Elimination Tool:

A) Antibodies

B) Fibrin

C) Haemoglobin

D) Enzymes

48 / 100

Backbone of amino acids comprises of

UHS 2017 Reconduct
Biology
Biological Molecules
Proteins
Elimination Tool:

A) R group

B) Amino group

C) Carboxylic group

D) Amino group, carboxylic group, hydrogen atom and R group.

49 / 100

Proteoglycan in cartilages (which consists of polysaccharides) are also attached to:

NUMS 2014
Biology
Biological Molecules
Conugated Molecules
Elimination Tool:

A) Chondroitin

B) Ossein

C) Casein

D) Cartilagin

50 / 100

Among the following, which acid is an unsaturated acid:

UHS 2017 Reconduct
Biology
Biological Molecules
Lipids
Elimination Tool:

A) Butyric Acid

B) Oleic Acid

C) Palmitic Acid

D) Both Oleic Acid and Palmitic Acid

51 / 100

Which of the following do not contain phosphodiester bond?

Biology
Biological Molecules
Elimination Tool:

A) DNA

B) ATP

C) RNA

D) NAD

52 / 100

Which of the following properties of amino acids is affected by a change in pH?

Biology
Biological Molecules
Elimination Tool:

A) Tertiary structure

B) Primary structure

C) Secondary structure

D) Net charge

53 / 100

All of the following are examples of fibrous proteins except:

Biology
Biological Molecules
Elimination Tool:

A) Silk fiber

B) Keratin

C) Myoglobin

D) Fibrin

54 / 100

Which of the following properties of amino acids is affected by a change in pH?

Biology
Biological Molecules
Elimination Tool:

A) Tertiary structure

B) Primary structure

C) Secondary structure

D) Net charge

55 / 100

Which one of the following types of bond is principally concerned in maintaining the alpha helix shape of secondary protein structure?

FMDC 2015
Biology
Biological Molecules
Elimination Tool:

A) Disulphide bonds

B) Peptide bonds

C) Ester bonds

E) Hydrogen bonds

56 / 100

Due to higher heat capacity and H bonds, water acts as:

Biology
Biological Molecules
Elimination Tool:

A) Thermo-stabilizer

B) Solvent

C) Inert medium

D) Reactive medium

57 / 100

Which of the following are not polymeric?

Biology
Biological Molecules
Lipids
Elimination Tool:

A) Proteins

B) Polysaccharides

C) Lipids

D) Nucleic acids

58 / 100

Which of the following is a complex of globular protein with non-proteinaceous material?

Biology
Biological Molecules
Elimination Tool:

A) Collagen

B) Albumin

C) Fibrinogen

D) Haemoglobin

59 / 100

Which of the following does not yield phosphorus on hydrolysis?

Biology
Biological Molecules
Nucleic Acids
Elimination Tool:

A) Nucleotide

B) Nucleoside

C) DNA

D) RNA

60 / 100

Which class of molecule is the major component of cell membrane?

FMDC 2015
Biology
Biological Molecules
Elimination Tool:

A) Phospholipid

B) Cellulose

C) Wax

D) Triglyceride

61 / 100

Cholesterol is:

PMC Practice 1
Biology
Biological Molecules
Lipids
Elimination Tool:

A) Animal sterol

B) C27H46O

C) 5 methyl groups

D) All of these

62 / 100

The bond formed when two or more atoms complete their electron shells by sharing electrons is called _____.

PMC Practice 31
Biology
Biological Molecules
Introduction to Fundamental Concepts of Chemistry
Introduction to the Atom
Elimination Tool:

A) Ionic bond

B) Hydrogen bond

C) Covalent bond

D) None of these options are correct

63 / 100

Proteins are the polymers of?

PMC Practice 19
Biology
Biological Molecules
Proteins
Elimination Tool:

A) Amino acids

B) Fatty acids

C) Nucleotides

D) None of these options are correct

64 / 100

All of the following are examples of fibrous proteins except:

Biology
Biological Molecules
Elimination Tool:

A) Silk fiber

B) Keratin

C) Myoglobin

D) Fibrin

65 / 100

NAD is an example of:

PMC 2020
Biology
Biological Molecules
Nucleic Acids
Elimination Tool:

A) Mononucleotide

B) Dinucleotide

C) Trinucleotide

D) Tetranucleotide

66 / 100

Which of the following properties of amino acids is affected by a change in pH?

Biology
Biological Molecules
Proteins
Elimination Tool:

A) Oxidation of amino acids

B) Reduction of amino acids

C) Atomization of amino acids

D) ionization of amino acids

67 / 100

Plants and animals cells are alike in processing:

FMDC 2015
Biology
Biological Molecules
Elimination Tool:

A) Chlorophyll

B) Chloroplast

C) Cell wall

E) Cell membrane

68 / 100

All coenzymes are derived from

UHS 2014
Biology
Biological Molecules
Elimination Tool:

A) Proteins

B) Carbohydrates

C) Metal ions

D) Vitamins

69 / 100

Which of the following is a keto-sugar?

Biology
Biological Molecules
Carbohydrates
Elimination Tool:

A) Glyceraldehyde

B) Dihydroxyacetone

C) Ribose

D) Glucose

70 / 100

If water has a high latent heat of vaporization, how could this property of water be helpful to plants and animals?

UHS 2019
Biology
Biological Molecules
Water
Elimination Tool:

A) With the release of large amount of water, a small amount of heat loss can take place.

B) With the release of small amount of water vapours, a great amount of heat loss can take place.

C) It will keep their temperature very high.

D) No cooling effect, with the release of even a large amount of water vapours.

71 / 100

The word protein is derived from:

PMC 2021 Tested
Biology
Biological Molecules
Proteins
Elimination Tool:

A) Arabic

B) Latin

C) Persian

D) Greek

72 / 100

Which of the following constitute large organic molecules?

Academy Questions
Biology
Biological Molecules
Carbon
Elimination Tool:

A) Carbohydrates

B) Proteins

C) Lipids

D) All of these

73 / 100

Excess glucose is converted in the liver to glycogen in response to the hormone

ETEA 2019
Biology
Biological Molecules
Carbohydrates
Elimination Tool:

A) Glucagon

B) Insulin

C) Bile

D) Both Glucagon and Insulin

74 / 100

Which of the following is purine:

UHS 2013
Biology
Biological Molecules
Nucleic Acids
Elimination Tool:

A) Guanine

B) Cytosine

C) Thymine

D) Uracil

75 / 100

Unit of carbohydrate is?

PMC Practice 33
Biology
Biological Molecules
Carbohydrates
Elimination Tool:

A) Monosaccharides

B) Amino acids

C) Fatty acids

D) All

76 / 100

Glucose and Ribose form ring structures when:

2022 PMC Test 3
Biology
Biological Molecules
Carbohydrates
Elimination Tool:

A) React with an appropriate enzyme

B) Dissolved in water

C) Immersed in oil

D) They are in crystalline state

77 / 100

A typical fat molecule is made up of

Biology
Biological Molecules
Lipids
Elimination Tool:

A) one glycerol and one fatty acid molecule

B) three glycerol and three fatty acid molecules

C) three glycerol molecules and one fatty acid molecule

D) one glycerol and three fatty acid molecules.

78 / 100

The major reason behind some proteins having quaternary structure is

PMC Practice 10
Biology
Biological Molecules
Proteins
Elimination Tool:

A) To enable them to respond to environmental alterations

B) To assemble the monomers to form a coordinated polymeric structure.

C) In the case of enzymes, to improve their rate of catalysis.

D) None of the above.

79 / 100

Which of the following are not polymeric?

Biology
Biological Molecules
Lipids
Elimination Tool:

A) Proteins

B) Polysaccharides

C) Lipids

D) Nucleic acids

80 / 100

A typical fat molecule is made up of

Biology
Biological Molecules
Lipids
Elimination Tool:

A) one glycerol and one fatty acid molecule

B) three glycerol and three fatty acid molecules

C) three glycerol molecules and one fatty acid molecule

D) one glycerol and three fatty acid molecules.

81 / 100

Which of the following is an unsaturated fatty acid?

PMC 2021 Tested
Biology
Biological Molecules
Lipids
Elimination Tool:

A) Oleic acid

B) Both of these

C) Palmitic acid

D) None of these

82 / 100

These are the properties of lipids:

PMC Practice 3
Biology
Biological Molecules
Lipids
Elimination Tool:

A) Insoluble in Water and Soluble in Fat

B) High Energy Content

C) Structural Component of the cell membrane

D) All of the Above

83 / 100

Which molecular structure of enzyme is essential for activity of enzyme?

Biology
Biological Molecules
Proteins
Elimination Tool:

A) Primary Structure

B) Secondary Structure

C) Quatemary Structure

D) Tertiary Structure

84 / 100

Which of the following amino acid is next to glycine with respect to the molecular structure?

Biology
Biological Molecules
Elimination Tool:

A) Alanine

B) Serine

C) Ethanolamine

D) Aspartic acid

85 / 100

Many types of lipids exist in nature. Triglyceride is also known as?

PMC Practice 29
Biology
Biological Molecules
Lipids
Elimination Tool:

A) neutral lipid

B) natural lipid

C) wax

D) all of these

86 / 100

Which of the following does not form a biopolymer

Biology
Biological Molecules
Elimination Tool:

A) Amino acid

B) Fatty acid

C) Nucleotides

D) Monosaccharides

87 / 100

The simplest monosaccharide containing keto group is

UHS 2014
Biology
Biological Molecules
Elimination Tool:

A) Glyceraldehyde

B) Dihydroxyacetone

C) Glucose

D) Ribose

88 / 100

Which one of the following is an organic compound?

Biology
PMC Practice 15
Biological Molecules
Lipids
Elimination Tool:

A) Carbon dioxide

B) Water

C) Lipid

D) Hydrochloric acid

89 / 100

Lecithin is formed by combining phosphatidic acid with ______:

NUMS 2020
Biology
Biological Molecules
Lipids
Elimination Tool:

A) Serine

B) Choline

C) Inositol

D) Ethanolamine

90 / 100

What is the most common fuel of energy for cells?

PMC Practice 12
Biology
Biological Molecules
Carbohydrates
Elimination Tool:

A) Protein

B) Lipid

C) Carbohydrate

D) None of these

91 / 100

NAD is an example of:

PMC 2020
Biology
Biological Molecules
Nucleic Acids
Elimination Tool:

A) Mononucleotide

B) Dinucleotide

C) Trinucleotide

D) Tetranucleotide

92 / 100

Lipid molecules can store a double amount of energy as compared to the same amount of carbohydrates because of the high number of?

PMC Practice 26
Biology
Biological Molecules
Lipids
Elimination Tool:

A) C-C

B) C-H

C) C-N

D) C-O

93 / 100

Which of the following properties of amino acids is affected by a change in pH?

Biology
Biological Molecules
Elimination Tool:

A) Tertiary structure

B) Primary structure

C) Secondary structure

D) Net charge

94 / 100

Which type of bond is not responsible in maintaining the tertiary structure of proteins?

PMC Practice 1
Biology
Biological Molecules
Proteins
Elimination Tool:

A) Ionic

B) Hydrogen

C) Peptide

D) Glycosidic

95 / 100

For the production of Lactose we combine

PMC Practice 17
Biology
Biological Molecules
Enzymes
Carbohydrates
Elimination Tool:

A) glucose, galactose and dehydrogenase them

B) glucose, fructose and dehydrogenase them

C) two amino acids must form a peptide bond

D) nitrogenous base with sugar molecule

96 / 100

Ergocalciferol is name of vitamin:

PMC Sample 3
Biology
Biological Molecules
Introduction to Biological Molecules
Elimination Tool:

A) A

B) B

C) C

D) D2

97 / 100

5 different amino acids, numbered 1, 2, 3, 4, and 5, below from the following sequence in the path of a polypeptide chain:

1-2-3-4-2-5-3

Messenger RNA codon, which correspond to the amino acids, are:
amino acid 1 UGU

amino acid 2 GAU

amino acid 3 CAC

amino acid 4 UAG

amino acid 5 AAG

Which one of the following DNA bases sequences could provide the code for the given section of the polypeptide?

NTS 2015 DUHS and JSMU
Biology
Biological Molecules
Nucleic Acids
Elimination Tool:

A) ACACTTGTGATGCTATTCGTG

B) ACACUAGUGAUGCUAUUCGUG

C) ACACTAGTGATGCTAAACGTG

D) ACACTAGTGATCCTATTCGTG

98 / 100

Which of the following elements are not found in carbohydrates?

PMC Practice 11
Biology
Biological Molecules
Carbohydrates
Elimination Tool:

A) C

B) H

C) N

D) O

99 / 100

Which one of the following is an example of unsaturated fatty acid?

UHS 2015
Biology
Biological Molecules
Lipids
Elimination Tool:

A) Butyric Acid

B) Oleic Acid

C) Palmitic Acid

D) Acetic Acid

100 / 100

Which is distributed more widely in a cell?

PMC Practice 12
Biology
Biological Molecules
Nucleic Acids
Elimination Tool:

A) DNA

B) RNA

C) Chloroplasts

D) Phagosomes

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