Biomolecules — DPP 3

20 NEET questions from Biomolecules, with answers and explanations. Attempt it as a timed test to get scoring, accuracy breakdown and mistake tracking.

Attempt this test free 20 questions · 30 minutes · +80 marks
1
Paper made from plant pulp and cotton fiber. Which type of polysaccharide present in it :-
  1. A Cellulose
  2. B Chitin
  3. C Inulin
  4. D Starch
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Correct answer: A

2
Enzyme inhibition caused by a substrate analogue is :-
  1. A Competitive
  2. B Non-competitive
  3. C In competitive
  4. D Semi-competitive
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Correct answer: A

3
Which one is the poly hydroxy aldehyde or ketone :-
  1. A Lipid
  2. B Nucleic acid
  3. C Carbohydrate
  4. D Water
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Correct answer: C

4
Adenylic acid is: -
  1. A Ribose + Adenine + phosphate
  2. B Ribose + cytosine
  3. C Nucleoside
  4. D Deoxyribonucleotide
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Correct answer: A

5
Proteins in the body are composed of: -
  1. A Amino acids
  2. B Natural proteins
  3. C Enzymes
  4. D nucleic acids
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Correct answer: A

6
Assertion : Dietary proteins are the source of non-essential amino acids.
Reason : Each protein is a homopolymer, which can be essential or non-essential.
  1. A Both (A) & (R) are correct but (R) is the correct explanation of (A).
  2. B Both (A) & (R) are correct but (R) is not the correct explanation of (A).
  3. C (A) is correct but (R) is incorrect.
  4. D Both (A) & (R) are incorrect.
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Correct answer: D

7
In DNA, purine nitrogen bases are: -
  1. A Uracil and Guanine
  2. B Guanine and Adenine
  3. C Adenine and cytosine
  4. D None
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Correct answer: B

8
5-Methyl uracil is present in
  1. A RNA
  2. B DNA
  3. C RNA & DNA
  4. D None
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Correct answer: B

9
Nucleotide is -
  1. A N-base, pentose sugar and phosphoric acid
  2. B Nitrogen, Hexose sugar and phosphoric acid
  3. C Nitrogen base, pentose sugar
  4. D Nitrogen base, trioses and phosphoric acid
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Correct answer: A

10
Identify the statement which is incorrect?
  1. A Primary metabolites have identifiable functions.
  2. B Secondary metabolites have ecological importance.
  3. C Primary metabolites play known role in normal physiological processes.
  4. D Secondary metabolites are alkaloids, Ricin, Amino acids, Arachidic acids etc.
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Correct answer: D

11
Sequence of N -base in one strand of DNA is A G T C T T G C. Then the sequence of N-base in it's complementary strand will be ?
  1. A T C A G A A C G
  2. B U C A G A A C G
  3. C C G T T C T G A
  4. D None
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Correct answer: A

12
Back bone in structure of DNA molecule is made up of -
  1. A Pentose Sugar and phosphate
  2. B Hexose sugar and phosphate
  3. C Purine and pyrimidine
  4. D Sugar and phosphate
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Correct answer: A

13
Which type of protein have hormonal function :-
  1. A Collagen
  2. B Insulin
  3. C Trypsin
  4. D Receptor
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Correct answer: B

14
Which element is not found in nitrogenous base?
  1. A Nitrogen
  2. B Hydrogen
  3. C Carbon
  4. D Phosphorus
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Correct answer: D

15
One of the following almost not found in living organism :-
  1. A Si
  2. B K
  3. C Na
  4. D Ca
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Correct answer: A

16
Which of the following statements regarding cofactors is not correct ?
  1. A Every coenzyme is a cofactor but every cofactor is not a coenzyme
  2. B Catalytic activity is lost when the cofactor is removed from the enzyme
  3. C Every coenzyme is a cofactor and every cofactor is a coenzyme
  4. D In the catalase enzyme, haem group work as a cofactor BBM149
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Correct answer: C

17
A → Non-protein constituents called apoenzyme.
B → Co-factors are bound to the enzyme to make the enzyme catalytically active.
  1. A A & B are correct
  2. B A & B are incorrect
  3. C A is correct & B is incorrect
  4. D A is incorrect & B is correct
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Correct answer: D

18
The cofactor of various respiratory enzymes is: -
  1. A Ca
  2. B B
  3. C Mg
  4. D Mo
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Correct answer: C

19
Inulin is made up of :-
  1. A Glucose
  2. B Fructose
  3. C Protein
  4. D Amino acid
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Correct answer: B

20
Biomolecules – NEET-1826 In the following diagrammatic representation A and B is :-
  1. A A → G-6-P, B → ATP
  2. B A → AMP, B → ATP
  3. C A → Fructose-6-P, B → ATP
  4. D A → ATP, B → ADP
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Correct answer: B

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