BIOMOLECULES

1.    The total number of amino acids which         occur in proteinss
    1) 10      2) 20         3) 200      4) 24
2.    Which of the following amino acid is             neutral in nature
    1) Glutamic acid    2) Asparatic acid
    3) Valine        4) Lysine
3.    Which of the following type of             biomlecules upon ionization form zwitter         ions
    1) Carbohydrates    2) Nucleic acids
    3) Amino acids        4) Vitamins
4.    “Anthocyanin” is a type of
    1) Terepenoid        2) Toxins
    3) Drug        4) Pigment
5.    Rubber, gums, cellulose are examples for
    1) Polymeric substances
    2) Pigments
    3) Essential oils
    4) Drug
6.    Organic acids having a hydrocarbon             chain and end in a carboxylic group are         called
    1) amino acids        2) Fatty acids
    3) Nucleic acids    4) Vitamins
7.    Nucleotide consists of
    1) N2 base only
    2) N2 base + sugar
    3) N2 base + sugar + phosphate
    4) sugar + Phosphate
8.    Find the odd “Nirogen base”
    1) Thymine    2) Cytosine
    3) Uracil    4) Adenine
9.    “Glycosidic bond” is seen in
    1) Oligosaccharides    2) Polysaccharides
    3) Monosaccharides
    4) a & b
10.    The type of bond formed between
    hydroxyl group of sugar and phosphate is
    1) Ester bond        2) Glycosidic
    3) Peptide bond    4) All the above
11.    Nitrogen bases in a DNA double helix are         bounded by
    1) Phosphodiester bonds 2) Ester bond
    3) Hydrogen bonds      4) Glycosidic bond
12.    A series of reactions which occur to form         a compound or degrade a compound put         together are called
    1) Metabolism        2) Anabolism
    3) Catabolism        4) All the above
13.    Antibodies having enzymatic activity are         called
    1) Ribozymes        2) Abzymes
    3) Endoenzymes    4) All the above
14.    Enzymes included in oxido reductases         class catalyse the following reaction
    1) Transamination    2) Oxidation
    3) Reduction        4) b & c
15.    The total number of type of nucleotides         is
    1) 5        2) 21         3) 12       4) 18
16.    A simple enzyme contains
    1) Apoenzyme and Metallic ion
    2) Apo enzyme and prosthetic group
    3) Only protein part   
    4) Enzyme like molecule
17.    Raffinose on hydrolysis gives
    1) Glucose, fructose and lactose
    2) Glucose, fructose and galactose
    3) Fructose, glucose adn erithrose
    4) Glucose, fructose and mannose
18.    Glucose gives silver mirror test with             Tollen’s reagent. It shows teh presene of
    1) Carboxylic group    2) Alcoholic acid
    3) Ketonic group    4) Aldeydic group
19.    When glucose is heated with nitric acid         the product is
    1) Lactic acid        2) Saccharic acid
    3) Glycollic acid    4) Oxalic acid
20.    Cellulose in the polymer of
    1) L- fructose        2) D - fructose
    3) D-glucose        4) Amylose
21.    Malt sugar  is
    1) Lactose    2) Glucose
    3) Maltose    4) Fructose
22.    Raffinose is made up of
    1) Galactose + Glucose + Fructose
    2) Maltose + Glucose + Galactose
    3) Galactose + Fructose + Maltose
    4) All the above
23.    Which of the following                 nucopolysaccharide  is used as an
    anticoagulant?
    1) Agar-Agar    2) Heparin
    3) Funori    4) (2) & (3)
24.    The storage protein is
    1) Tubulin    2) keratin
    3) Starch    4) Glutelins
25.    The most abundant type of lipids in             plants and animals is
    1) Triglycerides    2) Phospholipids
    3) Derived lipids    4) Glycolpids
26.    Which one of the following fats contains         unsaturated fatty acids
    1) Ghee        2) Curd
    3) Saffflower oil    4) Fish oil
27.    The following is one of the important             biological roles of lipids
    1) Enzyme activator     2) Energy source
    3) Emulsifiers               4) Vitamin carriers
    1) A and D      2) B and C
    3) A, C and D       4) A, B, C, D
28.    The most effiecient source of energy in         the human body is
    1) Fats        2) Sugars
    3) Proteins    4) Nucleic acid
28.    Bile, acids, cholesterol and vitamin
    -D belong to
    1) Simple lipids     2) Compound lipids
    3) Derived lipids     4) Glycolipids
30.    Which of the following  processes is             “Semi conservative” ?
    1) Translation        2) Transcription
    3) Replcation        4) Genetic code
31.    The reason for double helical structure of         DNA is operation of
    1) Vander waal’s forces
    2) Dipole - dipole interaction
    3) Hydrogen bonding
    4) Electrostatic attractions
32.    The ratio of phosphates sugars and             nitrogen bases in ds - DNA
    1) 1 : 2 : 1    2) 1 : 1 : 1
    3) 1 : 1 : 2    4) 3 : 1 : 1
33.    The most unstable molecule is
    1) ss DNA    2) ds RNA
    3) m RNA    4) t RNA
34.    t- RNA can not be called
    1) s RNA    2) Adaptor RNA
    3) Interpretor of genetic code
    4) Genetic RNA
35.    The term nucleic acids was given by
    1) Altnann    2) Meishcer
    3) Fishcher    4) Watson
36.     bacteriophage has
    1) Single strand DNA   
    2) Double strand RNA
    3) Double strand DNA
    4) Single strand RNA
37.    (A): Grape contains glucose
    (R): Glucose is called fruit sugar
    1) Both (A) and (R) are true and (R) is         the correct explanation of (A)
    2) Both(A) and (R) are true and (R) is         not the correct explanation of (A)
    3) (A) is true but (R) is false
    4) Both (A) are (R) wrong
38.    (A) : Nucleic acids are polymers of             nucleotides
    (R): Nucleotides are acidic in nature
    1) Both (A) and (R) are true and (R) is         the correct explanation of (A)
    2) Both(A) and (R) are true and (R) is         not the correct explanation of (A)
    3) (A) is true but (R) is false
    4) Both (A) are (R) wrong
39.    (A): Uracil is not seen in DNA
    (R): Thymine is absent in RNA
    1) Both (A) and (R) are true and (R) is         the correct explanation of (A)
    2) Both(A) and (R) are true and (R) is         not the correct explanation of (A)
    3) (A) is true but (R) is false
    4) Both (A) are (R) wrong
40.    (A): Dephosphorylated nucleosides are         nucleotides
    (R): Nucleoside consists of sugar
    nitrogen base and phosphate
    1) Both (A) and (R) are true and (R) is         the correct explanation of (A)
    2) Both(A) and (R) are true and (R) is         not the correct explanation of (A)
    3) (A) is true but (R) is false
    4) Both (A) are (R) wrong
41.    (A): Glycine is the  simplest and optically         inactive aminoacid
    (R): In glycine “R” group is replaced by         H atom therefore  carbon atom be            comes symmetric
    1) Both (A) and (R) are true and (R) is         the correct explanation of (A)
    2) Both(A) and (R) are true and (R) is         not the correct explanation of (A)
    3) (A) is true but (R) is false
    4) Both (A) are (R) wrong
42.    (A): The most abundant protein in human         body is collagen
    (R): Collagen shows three polypeptide         chains in coiled form
    1) Both (A) and (R) are true and (R) is         the correct explanation of (A)
    2) Both(A) and (R) are true and (R) is         not the correct explanation of (A)
    3) (A) is true but (R) is false
    4) Both (A) are (R) wrong
43.    (A): Complexity of protein molecule             increases from primary structure to             quaternary structure
    (R): In quaternary structure two or more         polypeptide chains are linked by different         types of bonds
    1) Both (A) and (R) are true and (R) is         the correct explanation of (A)
    2) Both(A) and (R) are true and (R) is         not the correct explanation of (A)
    3) (A) is true but (R) is false
    4) Both (A) are (R) wrong
44.    (1): Natural rubbers are polymer of    
    terpenes
    (R): Terpene is a liquid
45.    (1): Oils and fats turn rancid, if they are         exposed to warm, moist air
    (R): Rancidity occurs due to formation of         double bonds of fatty acids
46.    Shape of starch grains        Plant
    A) Simple eccentric        1) Maize
    B) Simple concentric        2) Potato
    C) Compound starch grain  3) Euphorbia
    D) Dumbell shape             4) Rice
    Identify the correct matching
    1) A= 4    B= 3    C = 1     D = 2
    2) A = 2   B = 1    C = 4    D = 3
    3) A = 3   B = 2    C = 1     D =4
    4) A =2    B= 1     C = 3     D = 4
47.    Organic acid        Found in
    A) Palmitic acid    1) Animal fat
    B) Caprylic acid    2) Cocoa butter
    C) Butyric acid    3) Butter
    D) Stearic acid        4) Coconut palm
    Identify the correct matching
    1)  A = 4   B = 1     C = 2   D = 3
    2) A =1     B = 3     C = 2   D = 4
    3) A = 3    B = 2      C = 4   D = 1
    4) A = 1    B = 4      C = 3   D = 2
48.    Column I        Column II
    A) Monosaccharides    e) Fructose
    B) Oligosaccharides    f) Gluconic acid
    C) Polysaccharides    g) pectin
                h) Lactose
    1) A = e, B = f, C = h
    2) A = f, B = g, C = h
    3) A = g, B = h, C = e
    4) A = f, B = e, C = g
49.    Pepsin s inactivated at pH
    1) Below 3    2) Below 2
    3) Above 5    4) Above 3
50.    Interferons are
    1) Pesticide    2) weedicide
    3) Anti-viral proteins
    4) Anti-bacterial proteins
51.    DNA nucleotides are attached by
    1) Hydrogen bonds
    2) Covalent bonds
    3) Vander wall’s force
    4) Electrovalent bonds

KEY
    1) 2    2)3    3)3    4)4    5)1
    6)2    7)3    8)4    9)4    10)1
    11)3    12)1    13)2    14)4    15)1
    16)3    17)2    18)4    19)2    20)3
    21)3    22)1    23)4    24)4    25)1
    26)3    27)4    28)1    29)3    30)3
    31)3    32)1    33)3    34)4    35)1
    36)1    37)3    38)2    39)2    40)4
    41)1    42)2    43)1    44)3    45)3
    44)2    47)4    48)2    49)4    50)3
    51) 2