First Year Biology Mcqs with Answers Chapter 2 | Class 11 Biology Mcq with Answers pdf chapter wise test
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Chapter 2
Biological Molecules
Encircle the most appropriate answer among the following options
1. Which one is a protein
- Colestrol
- ATP
- There is no way of knowing without seeing the chemical reaction
- Cellulase
2. Glycogen is an example of choose one:
- Both a polysaccharide and a carbohydrate
- Phospholipid
- Polysaccharide (only)
- Carbohydrate (only)
3. A triglyceride is a choose one:
- Protein
- Nucleic acid
- Simple sugar
- Lipid
4. Which is an organic molecule?
- NO2
- C6H12O6
- H2O
- H2SO4
5. Which class of molecule is the major component of cell membrane?
- Cellulose
- Phospholipid
- wax
- Triglyceride
6. Peptide bonds are found in choose one:
- Proteins
- Inorganic compounds
- Lipid
- Carbohydrate
7. Glycerol is the backbone molecule for choose one:
- ATP
- DNA
- Triglycerides
- Disaccharides
8. When a protein undergoes a hydrolysis reaction the end-products are choose one:
- Amino acid
- Nucleotides
- Fatty acid
- Monosaccharide’s
9. To produce Lactose choose one:
- Glucose and galactose must undergo a dehydration reaction.
- Glucose and fructose must undergo a hydrolysis reaction.
- Two amino acids must form a peptide bond.
- Pairing of nitrogenous bases must occur between nucleotides.
10. The biological function of a protein is determined by its choose one:
- Primary structure
- Quaternary structure
- Secondary structure
- Tertiary structure
11. Enzymes are choose one:
- Proteins
- Triglycerides
- Steroids
- Polysaccharides
12. The function of ATP is to choose one:
- Store energy
- Act as a catalyst
- Determine the function of a cell
- Act as a template for production of protein
13. All organic compounds contain the elements choose one:
- Iron and oxygen
- Carbon and hydrogen
- Carbon and nitrogen
- Carbon and oxygen
14. All of the following are organic compounds except choose one:
- Water
- Enzyme
- ATP
- Glucose
15. Which of the following is considered to be neutral?
- Cytoplasm
- HCI
- Urine
- Pure water
16. Glyceraldehyde is one example of a group of sugers called choose one:
- Pentose
- Tetrose
- Triose
- Octose
17. Nitrogen bases such as choline, ethanolamine and serine are important of choose one:
- Sphingolipid
- Phospholipid
- Phosphatidycholine
- Phosphodiester
18. Which molecule is used for short term energy storage?
- Chitin
- Fat
- Cellulose
- Glycogen
19. The functional group COOH is choose one:
- Basic
- Never ionized
- Acidic
- AllA,BandC
20. Which of these is an example of hydrolysis?
- Dipeptide + H20-amino acid + Amino acid
- Amino acid + Amino acid — Dipeptide + H20
- Neither of these is correct
- Both of these (A) and (B) are correct
21. A fatty acid is unsaturated if it choose one:
- Contain double bonds
- Contains an acidic group
- Bonds to glycogen
- Contain hydrogen
22. Which is not a lipid?
- Polysaccharides
- Wax
- Steroid
- Fat
23. Nucleotide contains choose one:
- Sugar, nitrogen base and carbon
- Sugar, nitrogen — containing base and a phosphate molecule
- Monomer for fat and Polysaccharide
- Sugar, glycerol and phosphate
24. ATP choose one:
- Has a helical structure
- is an amino acid
- Provide enzyme for metabolism
- is a high — energy molecule
25. A hormone is an example of which functional class of proteins?
- Regulatory
- Catalytic
- Contractile
- Structural
26. The Sugar found in R.N.A. is choose one:
- Galactose
- Fructose
- Ribose
- Deoxyribose
27. Steroids are classified as choose one:
- Lipids
- Protein
- Carbohydrate
- Nucleic acid
28. Hemoglobin is an example of which functional class of protein?
- Regulatory
- Contractile
- Transport
- Structural
29. In RNA the Nitrogen base that takes the place of thymine is choose one:
- Adenine
- Guanine
- Cytosine
- Uracil
30. Which of the following represent accurate pairing in D.N.A. molecules?
- Adenine to cytosine and guanine to thymine
- Adenine to uracil and cytosine to guanine
- Adenine to adenine and guanine to guanine
- Adenine to thymine and cytosine to guanue
31. The Suffix that denotes a sugar is choose one:
- ide
- ase
- ose
- amide
32. The melting points of palmitic acid is choose one:
- 800C
- 720C
- 63.10C
- 700C
33. Polar molecules choose one:
- Have a positive charge at one end and a negative charge at the other end
- Are found at the ends of other molecules
- Are pointed at both ends
- None of the above
34. Metabolic activities included choose one:
- Photosynthesis
- Respiration
- Digestions
- All of the above
35. Large molecules with skeletons of carbon atoms are said to be choose one:
- Carbonic
- Inorganic
- Carboxylate
- Organic
36. The Combining capacity of an atom or ion is called choose one:
- pH
- Valency
- Elemental balance
- Bonding capacity
37. DNA model was suggested by choose one:
- Wilkins and Franklin
- Hershey & Chase
- Watson and crick
- Char gaff
38. Conjugated Histon Proteins are choose one:
- Transport protein
- Only structured protein
- Only regulatory protein
- Structural and (Functional) regulatory protein
39. Branch of biology, which deals with the study of chemical components and chemical process in the living organism, is called choose one:
- Ecology
- Physiology
- Biochemistry
- Histology
40. Basis element of organic compound is choose one:
- Water
- Aldo — sugar
- Solid
- Carbon
41. Carbohydrates are also called choose one:
- Saccharides
- Glycogen
- Glycosidic bond
- Ribofuranose
42. The sugar with aldehyde group is called choose one:
- Aldo-sugar
- Keto-suger
- Acylglycerol
- Glycogen
43. Ribose form a ring structure when in solution known as choose one:
- Hydrolysis
- Biochemistry
- Ribofuranose
- Carbon
44. Oligosaccharides yield from two to ten monosaccharides on choose one:
- Polymerization
- Hydrolysis
- Glycosidic bond
- Condensation
45. The covalent bond between two monosaccharides called choose one:
- Phophodiester linkage
- Peptide bond
- Hydrophobic interactions
- Glycosidic bond
46. Starches have unbranched chains of glucose and soluble in hot water are choose one:
- Acylglycerol
- Amylase
- Amylopectin
- Herbivores
47. Starches have branched chains and are insoluble in hot or cold water are choose one:
- Amylopectin
- Amylose
- Phospholipids
- Acylglycerol
48. Animal starch is choose one:
- Carbon
- Amylose
- Glycogen
- Amylopectin
49. Cellulose is digested because of microorganism in their tract by choose one:
- Omnivores
- Carnivores
- Herbivores
- Macrophages
50. The nature of Lipids is choose one:
- Inorganic
- Carbon
- Heterogeneous
- Proteinacous
51. These are composed of glycerol and fatty acids choose one:
- Phospholipids
- Waxes
- Acylglycerol
- Terpenoids
52. In animal fatty acids are choose one:
- Solid
- Ringed
- Straight
- None of these
53. Solubility of fatty acids in organic solvents and their melting points increase with increasing number of choose one:
- Carbon
- Hydrogen
- Oxygen
- All of the above
54. At room temperature animal Fats are choose one:
- Solid
- liquids
- Semi-solid
- All of these
55. Fats and oils are lighter than choose one:
- Air
- Oil
- Glycerol
- Water
56. Derivatives of phosphatidic acid are.
- Waxes
- Terpenoids
- Phospholipids
- Acylgycerols
57. Terpenoids are made up of simple repeating units called choose one:
- Isoprenoid units
- Amino acid
- Peptide unit
- Glycosidic unit
58. Most abundant organic compound to be found in the cells is choose one:
- Proteins
- Carbon
- Nucleic acid
- Lipids
59. Protein’s polymers are choose one:
- Nucleotides
- Amino acid
- Glucose
- Fatty acids
60. Number of peptide bonds in a dipeptide choose one:
- Four
- Three
- Two
- One
61. Which structure of protein comprises the number and sequence of amino acid in a protein molecule?
- Primary
- Secondary
- Tertiary
- Quatenary
62. Each alpha chain of hemoglobin contains amino acid.
- 141
- 142
- 139
- 140
63. Oxygen carrying protein of red blood cells exhibits quaternary structure of protein.
- Hemoglobin
- Myoglobin
- Insulin
- Fibrinogen
64. In tertiary structure of protein polypeptide chain bends and folds upon itself forming a shape choose one:
- Ellipsoidal
- Square
- Globular
- Triangular
65. In aqueous medium fibrous proteins are choose one:
- Soluble
- least soluble
- Insoluble
- readily soluble
66. Globular proteins are ellipsoidal or choose one:
- Helix
- linear
- Fiber like
- Spherical
67. DNA and RNA are made up of choose one:
- Nucleoside
- Amino acids
- Nucleotide
- Nucleic acid
68. A 5 carbon monosaccharide, a nitrogen base and a phosphoric acid are three sub units of choose one:
- Nucleoside
- Nucleotide
- Nucleic acid
- Carbohydrates
69. The compound formed by combination of a base and a pentose sugar is called choose one:
- Nucleic acid
- ATP
- Nucleotide
- Nucleoside
70. DNA is?
- Heredity material
- proteinacous material
- Fatty material
- Cellular material
71. Nicotinamide adenine dinucleotide abbreviated as choose one:
- DNA
- NADH
- NAD
- DAN
72. The amount of DNA is fixed for a particular species as choose one:
- Centromere
- Chromatids
- Chromosomes
- Histones
73. Heamophilus influenzae is?
- Virus
- Fungi
- prion
- Bacteria
74. RNA synthesis by DNA is known as choose one:
- Translation
- Transcription
- Replication
- Semi conservative replication
75. RNA comprises about 10 to 20% of the choose one:
- Chromosome RNA
- Conjugated RNA
- Cellular RNA
- Globular RNA
76. Two different molecule belonging to different categories, usually combine together to forms choose one:
- Protein molecules
- Cellular molecules
- Conjugated molecules
- Lipids molecules
77. The nucleohistone is present in choose one:
- Chromosome
- Centromere
- Nucleus
- Homologues Chromosomes
78. Which one pick amino acid and transfer them to ribosome where they linked to form protein choose one:
- rRNA
- tRNA
- mRNA
- RNA
79. Nonpolar organic molecule choose one:
- CO2
- NAD
- H2O
- dGTP
80. Covalent bond choose one:
- Result when atoms complete their electronic shell by sharing electron
- Result when atoms complete their electronic shell by donating electron
- Both A and B
- None of these
81. Cane suger is a/an choose one:
- Polysaccharides
- Oligosaccharides
- Monosaccharides
- None of these
82. A nucleotide of DNA choose one:
- Serine
- ATP
- dGTP
- CTP
83. Carbon is choose one:
- Bivalent
- Tetravalent
- Trivalent
- All of the above
84. Translation choose one:
- Synthesis of RNA
- Three adjacent nuclcotide on mRNA
- Synthesis of protein
- Structual component of ribosome
85. Codon choose one:
- Structual component of ribosome
- Histone
- Three adjacent nucleotide on mRNA
- Purine of DNA
86. Adenine choose one:
- Synthesis of protein
- Histone
- Purine of DNA
- Pyrimidine of DNA
87. rRNA choose one:
- Structual component of ribosome
- Histone
- Purine of DNA
- Synthesis of protein
88. Protein attach to chromosome choose one:
- Three adjacent nuclcotide on mRNA
- Purine of DNA
- Histone
- Structual component of ribosome
89. Deoxyribose choose one:
- Pentose sugar
- Pyrimidine of DNA
- DNA
- DNA model
90. Contain an anticodon choose one:
- tRNA
- DNA model
- mRNA
- DNA
91. Watson and crick choose one:
- DNA
- DNA model
- Nucleotide
- Pentose sugar
92. Double helix choose one:
- DNA
- Pentose sugar
- tRNA
- DNA model
93. Nucleoside + Phosphate choose one:
- tRNA
- DNA
- Nucleotide
- mRNA
94. Steriodes and triglycerides are example choose one:
- DNA
- Lipids
- pH7
- Disaccharide
95. Starch choose one:
- pH7
- Give blue colour with iodine
- Phospholipid
- Monosaccharide
96. Sucrose and Lactose are example of choose one:
- Lipids
- Phospholipid
- Monosaccharide
- Disaccharide
97. Glucose and fructose are example of choose one:
- Monosaccharide
- PH7
- Lipids
- Disaccharide
98. Nutral solution choose one:
- Disaccharide
- PH7
- Lipids
- Give blur color with iodized
99. Act as solvent for ionic compounds in body fluid choose one:
- Water
- Globular protein.
- ATP
- COOH
100. The branch of biology that deals with the study of in-organic and organic molecules that make up the body of a living organism is choose one:
- Pharmacology
- Biochemistry
- Both (A) and (B)
- Pharmaco-dynamics