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Q. No.Which of the following combinations of statements is CORRECT regarding amino acids?
1. I and II only
2. I and III only
3. II and III only
4. I, II and III only
| (I) | α-amino acids are organic compounds containing an amino group and an acidic group as substituents on the same carbon. |
| (II) | There are only twenty types of amino acids in total. |
| (III) | Tyrosine, phenylalanine, and tryptophan are aromatic amino acids. |
1. I and II only
2. I and III only
3. II and III only
4. I, II and III only
Subtopic: Amino Acids |
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Hints
Match List-I with List-II:
1. A - P, B - Q, C - R, D - S
2. A - Q, B - P, C - R, D - S
3. A - Q, B - P, C - S, D - R
4. A - P, B - Q, C - S, D - R
| List-I | List-II | ||
| A: | Palmitic acid | P: | Has 16 carbons including carboxyl carbon |
| B: | Arachidonic acid | Q: | Has 20 carbon atoms including the carboxyl carbon |
| C: | Glycerol | R: | Phospholipid |
| D: | Lecithin | S: | Trihydroxypropane |
1. A - P, B - Q, C - R, D - S
2. A - Q, B - P, C - R, D - S
3. A - Q, B - P, C - S, D - R
4. A - P, B - Q, C - S, D - R
Subtopic: Miscellaneous |
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Hints
Identify the biomolecules shown in the given figures:
1. A - Purine; B- Nucleotide; C - Nucleoside
2. A - Pyrimidine; B- Nucleotide; C - Nucleoside
3. A - Purine; B- Nucleoside; C - Nucleotide
4. A - Pyrimidine; B- Nucleoside; C - Nucleotide
1. A - Purine; B- Nucleotide; C - Nucleoside
2. A - Pyrimidine; B- Nucleotide; C - Nucleoside
3. A - Purine; B- Nucleoside; C - Nucleotide
4. A - Pyrimidine; B- Nucleoside; C - Nucleotide
Subtopic: Nucleic Acid: Nucleotides |
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Hints
Which of the following secondary metabolites is a lectin?
1. Abrin
2. Concanavalin A
3. Vinblastine
4. Morphine
1. Abrin
2. Concanavalin A
3. Vinblastine
4. Morphine
Subtopic: Primary & Secondary Metabolites |
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Hints
Consider the given two statements:
1. Both A and B are correct and B explains A
2. Both A and B are correct but B does not explain A
3. Only A is correct
4. Only B is correct
| A: | Dietary proteins are the source of essential amino acids. |
| B: | Humans cannot synthesise any amino acids. |
1. Both A and B are correct and B explains A
2. Both A and B are correct but B does not explain A
3. Only A is correct
4. Only B is correct
Subtopic: Amino Acids |
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Hints
Consider the given two statements:
1. Only A is correct
2. Only B is correct
3. Both A and B are correct
4. Both A and B are incorrect
| A: | Collagen is the most abundant protein in animal world. |
| B: | Ribulose bisphosphate Carboxylase-Oxygenase (RuBisCO) is the most abundant protein in the whole of the biosphere. |
1. Only A is correct
2. Only B is correct
3. Both A and B are correct
4. Both A and B are incorrect
Subtopic: Miscellaneous |
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Hints
Identify the incorrect statement regarding polysaccharides:
| 1. | Cellulose is a polysaccharide consisting of only one type of monosaccharide. |
| 2. | Inulin is a polymer of fructose. |
| 3. | Paper made from plant pulp and cotton fibre is cellulosic. |
| 4. | In a polysaccharide chain (say glycogen), the left end is called the reducing end and the right end is called the non-reducing end. |
Subtopic: Miscellaneous |
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Hints
Some proteins are an assembly of more than one polypeptide or subunits. What level
of protein structure is possible only in such proteins?
1. Primary
2. Secondary
3. Tertiary
4. Quaternary
of protein structure is possible only in such proteins?
1. Primary
2. Secondary
3. Tertiary
4. Quaternary
Subtopic: Structural Organisation of Proteins |
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Hints
Which of the following correctly distinguishes competitive inhibition from noncompetitive inhibition?
| 1. | In competitive inhibition, Vmax decreases but Km remains unchanged |
| 2. | In competitive inhibition, both Vmax and Km increase with inhibitor concentration |
| 3. | In competitive inhibition, Vmax remains unchanged but apparent Km increases |
| 4. | In competitive inhibition, the inhibitor binds irreversibly to the allosteric site |
Subtopic: Enzyme Inhibition |
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Hints
Which of the following statements correctly differentiates a prosthetic group from a coenzyme?
| 1. | Prosthetic groups are inorganic, whereas coenzymes are always proteins |
| 2. | Coenzymes remain permanently attached to the apoenzyme, whereas prosthetic groups bind transiently |
| 3. | Prosthetic groups are tightly bound to the apoenzyme, whereas coenzymes usually associate temporarily during catalysis |
| 4. | Coenzymes form the active site permanently, whereas prosthetic groups participate in many unrelated reactions |
Subtopic: Enzyme Cofactors |
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Select Chapter Topics:
- 1(current)
Q. No.
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