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Q. No.

Which end of the glycogen molecule is the reducing end?
1. The left
2. The right
3. The right and the left both
4. Neither the right nor the left

Subtopic:  Carbohydrates: Starch & Glycogen |
 80%
Level 1: 80%+
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Identify the correct statements:
a: Plant cell walls are made of cellulose.
b: Fungal cell walls are made of chitin.
c: True bacterial cell walls are made of lipopolysaccharides.
d: Archaeal cell walls are made of sporopollenin.
1. Only a and b
2. Only a and c
3. Only b and c
4. Only c and d
Subtopic:  Carbohydrates |
 93%
Level 1: 80%+
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Nucleic Acids:
I: are polynucleotides.
II: are constituents of the true macromolecular fraction of any living tissue or cell.
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic:  Nucleic Acid |
 86%
Level 1: 80%+
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Regarding the primary structure of a protein:
I: The sequence of amino acids i.e., the positional information in a protein is called the primary structure of a protein.
II: A protein is imagined as a line, the left end represented by the first amino acid and the right end represented by the last amino acid.
III: The first amino acid is also called as C-terminal amino acid and the last amino acid is called the N-terminal amino acid.
1. Only I and II are correct
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct
Subtopic:  Structural Organisation of Proteins |
 76%
Level 2: 60%+
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Adult human haemoglobin consists of:
I: 4 subunits.
II: 4 types of subunits.
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic:  Structural Organisation of Proteins |
 86%
Level 1: 80%+
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In a polypeptide or a protein, amino acids are linked by a peptide bond which is formed:
I: when the carboxyl (-COOH) group of one amino acid reacts with the amino (-NH2) group of the next amino acid
II: with the elimination of a water moiety (the process is called dehydration)
1. Only I
2. Only II
3. Both I and II
4. Neither I nor II
Subtopic:  Zwitter ion & Peptide Bond |
 88%
Level 1: 80%+
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The direction of a phosphodiester bond [in a polynucleotide chain] is:
1. 5’ – 3’ 2. 3’ – 5’
3. 1’ – 3’ 4. 3’ – 1’
Subtopic:  Nucleic Acid |
 52%
Level 3: 35%-60%
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The famous Watson-Crick model of DNA helix describes its:
1. Primary structure 2. Secondary structure
3. Tertiary structure 4. Quaternary structure
Subtopic:  The DNA |
 69%
Level 2: 60%+
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Almost all enzymes are proteins but a few may be:
1. nucleic acids 2. carbohydrates
3. lipids 4. metal ions
Subtopic:  Enzymes |
 81%
Level 1: 80%+
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In the absence of an enzyme, the reaction catalysed by this enzyme:
1. will not take place
2. is very slow
3. produces some other product
4. gets faster
Subtopic:  Enzyme Catalysis |
 82%
Level 1: 80%+
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