Q.1.
Select the wrong statement:
-
18%
a) Proteins are heteropolymers made up of amino acids.
-
11%
b) Ribozymes are nucleic acids with catalytic power.
-
28%
c) Proteins, nucleic acids and polysaccharides are the only three types of macromolecules found in the living system.
-
43%
d) Collagen is the most abundant protein in the whole of biosphere whereas RuBisco is the most abundant protein in animal world.
Q.2.
Two free ribonucleotides units are interlinked with
-
26%
a) peptide bond
-
9%
b) covalent bond
-
18%
c) hydrogen bond
-
47%
d) phosphodiester bond
Q.3.
Carbohydrates, the most abundant Biomolecules on earth, are produced by
-
23%
a) Fungi, algae and green plant cells
-
19%
b) All bacteria, fungi and algae
-
51%
c) Some bacteria, algae and green plant cells
-
6%
d) Viruses, fungi and algae
Q.4.
The amino acid involves in formation of Haeme:
-
17%
a) Tyrosine
-
31%
b) Glycine
-
23%
c) Tryptophan
-
28%
d) Histidine
Q.5.
Coenzyme is .... ..... [ BHU 1997]
-
29%
a) Often a vitamin
-
40%
b) Always an inorganic compound
-
24%
c) Always a protein
-
7%
d) Often a metal
Q.6.
ow does steroid hormone influence the cellular activities? [NEET 2019]
-
29%
a) Changing the permeability of the cell membrane
-
36%
b) Binding to DNA and forming a genehormone complex
-
25%
c) Activating cyclic AMP located on the cell membrane
-
9%
d) Using aquaporin channels as second messenger
Explanation
Q.7.
The two functional groups characteristic of sugars are ... ..[NEET 2018]
-
28%
a) carbonyl and phosphate
-
15%
b) carbonyl and methyl
-
22%
c) hydroxyl and methyl
-
35%
d) carbonyl and hydroxyl
Q.8.
Many ribosomes may associate with a single mRNA to form multiple copies of a polypeptide simultaneously. Such strings of ribosomes are termed as .... .. [NEET 2018]
-
6%
a) Plastidome
-
16%
b) Polyhedral bodies
-
55%
c) Polysome
-
23%
d) Nucleosome
Q.9.
Match the following Choose the correct option from the following
| (a) Inhibitor of catalytic activity | (i) Ricin |
| (b) Possess peptide bonds | (ii) Malonate |
| (c) Cell wall material in fungi | (iii) Chitin |
| (d) Secondary metabolite | (iv) Collagen |
-
9%
a) a → iii; b → iv; c → i; d → ii;
-
12%
b) a → ii; b → iii; c → i; d → iv;
-
74%
c) a → ii; b → iv; c → iii; d → i;
-
5%
d) a → iii; b → i; c → iv; d → ii;
Q.10.
Chitin occurs in ... .... [ AMU 2003]
-
13%
a) Crab
-
9%
b) caterpillar
-
23%
c) Agaricus
-
55%
d) All the above
Q.11.
Glucose is stored as glycogen in ... ...[ AFMC 2011]
-
27%
a) Pancreas
-
4%
b) Bone
-
11%
c) Kidney
-
58%
d) Liver
Q.12.
Match the following ... [kerala 2007]
| a) Biological pigments | 1) Sodium chloride |
| b) Chemical messengers | 2) Steroids |
| c) Important constituent of blood | 3) Prostaglandins |
| d) Four carbon rings | 4) chlorophyll |
-
4%
a) a - 2 , b - 4, c - 3, d - 1
-
16%
b) a - 2, b - 1, c - 4, d - 3
-
25%
c) a - 3, b - 3, c - 2, d - 1
-
54%
d) a - 4, b - 3, c - 1, d - 2
Q.13.
The most essential of the fatty acids is .... ...... [ AMU 2001]
-
37%
a) Arachidonic acid
-
15%
b) Linolenic amine
-
14%
c) Linoleic acid
-
33%
d) Oleic acid
Q.14.
Most abundant component of cell is ... ... [DPMT 2011]
-
11%
a) Protein
-
54%
b) Water
-
24%
c) Cellulose
-
11%
d) Lipid
Q.15.
Which one is a fibrous protein? ... .... [ Pb PMT 1997]
-
64%
a) Collagen
-
21%
b) Globulin
-
11%
c) Haemoglobin
-
4%
d) Hordein
Q.16.
" All enzymes are proteins". This statement is now modified because of exception to this ... ... [ DPMT 2010]
-
12%
a) Arylsulphate
-
67%
b) Ribozyme
-
12%
c) Nitroreductase
-
9%
d) Dehydrogenase
Q.17.
The ‘‘lock and key’’ model of enzyme action illustrates that a particular enzyme molecule:
-
15%
a) May be destroyed and resynthesised several times.
-
69%
b) Interacts with a specific type of substrate molecule.
-
3%
c) Reacts at identical rates under all conditions.
-
13%
d) Forms a permanent enzyme – substrate complex.
Q.18.
Energy currency/coin of cell is .... ... [ MPPMT 2002 ]
-
89%
a) ATP
-
5%
b) NAD
-
5%
c) ADP
-
2%
d) GDP
Q.19.
Which is not a protein .... .... [ HPPMT 2011]
-
13%
a) Trypsin
-
19%
b) Collagen
-
13%
c) Rubisco
-
54%
d) N-Acetylglucosamine
Q.20.
Enzyme are polymers of ... ... [ AFMC 1996]
-
12%
a) Fatty acids
-
62%
b) Amino acids
-
6%
c) Hexose sugar
-
20%
d) Inorganic phosphate
Q.21.
Non-proteinaceous part of enzyme is ... .... [ Har PMT 2003]
-
26%
a) Cofactor
-
10%
b) Coenzyme
-
18%
c) Prosthetic group
-
46%
d) All the above
Q.22.
Living cell contains 60-75% water. Water present in human body is ... ...[ CBSE 1992]
-
8%
a) 60-65%
-
5%
b) 50-55%
-
56%
c) 75-80%
-
31%
d) 65-70%
Q.23.
NAD is ... .... [ MHTCET 2007]
-
40%
a) Nicotinamide adenosine diphosphate
-
12%
b) Nicotine adenosine phosphate
-
33%
c) Nicotinamide adenine dinucleotide
-
14%
d) None of the above
Q.24.
Two polypeptide chains are joined by hydrogen bonds to produce .... ... [ Har PMT 2002]
-
21%
a) α-helix
-
23%
b) Tertiary structure
-
17%
c) β-pleated sheet
-
39%
d) All the above
Q.25.
Which is not true of enzymes? ... ... [ RPMT 1996]
-
2%
a) They are specific
-
9%
b) They are made of globular proteins
-
72%
c) Enzymes are most active at maximum temperature
-
17%
d) They are most active at optimum temperature
Q.26.
Enzymes enhance rate of reaction by ... .... [ CBSE 2000 ]
-
5%
a) Combining with product
-
25%
b) Forming reactant product complex
-
15%
c) Changing equilibrium of reaction
-
55%
d) Lowering activation energy
Q.27.
Nicotine and cocaine are ....
-
14%
a) Peptides
-
20%
b) Tannins
-
55%
c) Alkaloids
-
10%
d) Resin
Q.28.
Which is not correct? .... ... [ BHU 1992]
-
8%
a) All enzymes are biocatalysts
-
44%
b) All proteins are enzymes
-
36%
c) All enzymes are proteins
-
12%
d) All enzymes are thermolabile
Q.29.
Feedback inhibition is caused by blocking of enzymes by ... .... [ AFMC 2007]
-
23%
a) Accumulated end products
-
21%
b) Chemicals produced by hormones
-
19%
c) Hormones
-
37%
d) Competitive inhibition
Q.30.
Which of the following pair is monosaccharide? .... ... [ RPMT 1998]
-
69%
a) Glucose and Fructose
-
14%
b) Glucose and Sucrose
-
14%
c) Ribose and Maltose
-
2%
d) Ribose and Sucrose
Q.31.
Calcium is required for functioning of enzyme ... .... [ Pb PMT 2005] Explanation is provided, please click on
-
10%
a) Fumarase
-
41%
b) ATP-ase
-
33%
c) Succinate thiokinase
-
15%
d) Isocitrate dehydrogenase
Q.32.
Which is not a trait of enzymes? ... .... [ CPMT 1996]
-
7%
a) Proteinaceous nature
-
9%
b) Specific in nature
-
30%
c) Speed up ate of biochemical reaction
-
55%
d) Used up in reaction
Q.33.
Read the statements ... ... [ kerala 2008] i) Element important for production of thyroxine is iodine ii) Vitamin B6 is niacin or nicotinic acid iii) Fructose is a hexose monosaccharide iv) Globulin is a conjugate protein
-
16%
a) a, b, c are correct, d is wrong
-
27%
b) a, c are correct, b, d are wrong
-
41%
c) a, b are correct, c, d are wrong
-
16%
d) a is correct, b, c d are wrong
Q.34.
A fatty acid not synthesised in human body is .... ..... [ AMU 2002]
-
26%
a) Cholesterol
-
43%
b) Linoleic acid
-
12%
c) Glycerol
-
19%
d) None of the above
Q.35.
A storage protein is ... .. [ CPMT 1999 ]
-
22%
a) Keratin
-
32%
b) Collagen
-
12%
c) Haemoglobin
-
34%
d) Glutelin/Globulin
Q.36.
The form in which sugar is present in sugarcane ... ... [ Manipal 2001]
-
13%
a) Maltose
-
59%
b) Sucrose
-
18%
c) Fructose
-
10%
d) Glucose
Q.37.
Temperature is increased from 3° to 40°. The rate of enzyme controlled biochemical reaction will ... .... [ MPPMT 1996]
-
12%
a) Not change
-
32%
b) Increase
-
38%
c) Increase initially and then decrease
-
18%
d) Decrease
Q.38.
Base pairs present in one turn of DNA are ... ... [ Har. PMT 2002]
-
18%
a) 12
-
5%
b) 11
-
69%
c) 10
-
8%
d) 9
Explanation
Q.39.
Coenzyme is often a ... ..... [ CPMT 1996 ]
-
2%
a) Carbohydrate
-
29%
b) Protein
-
66%
c) Vitamin
-
2%
d) Fatty acid
Q.40.
A nucleotide is ... ... [ BHU 2001]
-
11%
a) Sugar + Phosphate
-
68%
b) Base + Sugar + Phosphate
-
8%
c) base + Sugar - OH
-
13%
d) (Base + Sugar+Phosphate)n
Q.41.
Select the correct answer from the following statements ... ...[ BHU 2008] 1) Cutin is fatty acid polymer 2) Starch is glucose polymer 3) Sucrose is monosaccharide 4) Maltose is polymer of fructose
-
22%
a) 1, 2, 3 are correct
-
44%
b) 1 and 2 are correct
-
28%
c) 2 and 4 are correct
-
6%
d) 1 and 3 are correct
Q.42.
A nucleotide is formed of ... .... [ BHU 2001]
-
18%
a) Purine, pyrimidine and phosphate
-
11%
b) Purine, sugar and phosphate
-
71%
c) Nitrogen base, sugar and phosphate
-
0%
d) Pyrimidine, sugar and phosphate
Q.43.
Digestive enzymes are .... .... [ DPMT 2007]
-
69%
a) Hydrolases
-
0%
b) Transferases
-
21%
c) Oxidoreductases
-
10%
d) Ligases
Q.44.
What is laevorotatory ... .... [ MPPMT 2007]
-
51%
a) Fructose
-
9%
b) Glucose
-
23%
c) Maltose
-
17%
d) Sucrose
Q.45.
Cellulose is ... .... [ MPPMT 2002]
-
54%
a) Hexosan polysaccharide
-
14%
b) Pentosan polysaccharide
-
9%
c) Heptopolysaccharide
-
23%
d) Heteropolysaccharide
Q.46.
Number of fatty acid residues present in one molecule of fat is ... .... [ BHU 2000 ]
-
20%
a) 4
-
66%
b) 3
-
9%
c) 2
-
6%
d) 1
Q.47.
Non-protein part of holoenzyme is ... .... [ WB 2007]
-
8%
a) Vitamin
-
76%
b) Cofactor
-
11%
c) Fatty acid
-
5%
d) Zymogen
Q.48.
A riboside is .... .... [ AIIMS 1992]
-
3%
a) base + Phosphate
-
24%
b) Ribose + Phosphate
-
30%
c) Ribose + Phosphate + Base
-
43%
d) Ribose + Base
Q.49.
An enzyme made of both protein and non-protein parts is together called ... .... [ BHU 2008]
-
17%
a) Coenzyme
-
6%
b) Endoenzyme
-
6%
c) Exoenzyme
-
72%
d) Holoenzyme
Q.50.
The protein part of enzyme is ... .... [ AFMC 2012]
-
27%
a) Prosthetic group
-
63%
b) Apoenzyme
-
7%
c) Holoenzyme
-
2%
d) Zymogen