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Q. No.Which of the following categories of enzyme classification are correctly matched?
EC 1
Oxidoreductases: catalyze oxidation/reduction reactions
EC 2
Hydrolases: catalyze the hydrolysis of various bonds
EC 3
Transferases: transfer a functional group (e.g. a methyl or phosphate group)
EC 4
Lyases: cleave various bonds by means other than hydrolysis and oxidation
EC 5
Isomerases: catalyze isomerization changes within a single molecule
EC 6
Ligases: join two molecules with covalent bonds.
1. EC 1, EC 4, EC 5 and EC 6 only
2. EC 2 and EC 3 only
3. EC 1, EC 4 and EC 6 only
4. EC 3, EC 4, EC 5 and EC 6 only
Subtopic: Enzymes Classification |
62%
Level 2: 60%+
Hints
Enzymes A, B and C in the given figure can be:
| A | B | C | |
| 1. | Gastric lipase | Salivary amylase | Lingual lipase |
| 2. | Pepsin | Salivary amylase | Trypsin |
| 3. | Pepsin | Trypsin | Lactase |
| 4. | Rennin | Maltase | Sucrase |
Subtopic: Factors Affecting Enzyme Catalysis Reaction |
70%
Level 2: 60%+
Hints
In the given diagram of DNA double helix, what would be the correct values of 1, 2, and 3 in nanometre?
| 1 | 2 | 3 | |
| 1. | 1.0 | 3.4 | 34 |
| 2. | 2.0 | 0.34 | 3.4 |
| 3. | 2.0 | 3.4 | 0.34 |
| 4. | 4.0 | 3.4 | 0.34 |
Subtopic: The DNA |
74%
Level 2: 60%+
Hints
Given below is a schematic diagram of a metabolic pathway in living organisms. Please do not try to decipher anything from the given diagram. Can you tell what will be true for metabolic pathways in living organisms in general?
I. Biomolecules in a living organism have a turn over.
II. Metabolic pathways cross-cross each other.
III. Flow of metabolites through metabolic pathways has a definite rate and direction.
1. Only I and II
2. Only I and III
3. Only II and III
4. I, II and III
I. Biomolecules in a living organism have a turn over.
II. Metabolic pathways cross-cross each other.
III. Flow of metabolites through metabolic pathways has a definite rate and direction.
1. Only I and II
2. Only I and III
3. Only II and III
4. I, II and III
71%
Level 2: 60%+
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Hints
Identify the correct statement regarding the figure given:
| 1. | A is an ester bond; B is a glycosidic bond and they are type of hydrogen bonds |
| 2. | A is an ester bond; B is a glycosidic bond and they are formed by dehydration synthesis |
| 3. | A is a peptide bond; B is a glycosidic bond and they are types of hydrogen bonds |
| 4. | A is a peptide bond; B is an ester bond and they are formed by dehydration synthesis |
Subtopic: The DNA |
76%
Level 2: 60%+
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Hints
In the enzyme which catalyses the breakdown of:
\(\mathrm{H}_2 \mathrm{O}_2 \rightarrow \mathrm{H}_2 \mathrm{O}+\mathrm{O}_2\)
the prosthetic group is:
\(\mathrm{H}_2 \mathrm{O}_2 \rightarrow \mathrm{H}_2 \mathrm{O}+\mathrm{O}_2\)
the prosthetic group is:
| 1. | Nicotinamide adenine dinucleotide | 2. | Haem |
| 3. | Zinc | 4. | Niacin |
Subtopic: Enzyme Cofactors |
72%
Level 2: 60%+
NEET - 2022
Hints
Amongst the following, the element constituting the least percent of the weight of human body is:
1. Oxygen
2. Carbon
3. Hydrogen
4. Nitrogen
1. Oxygen
2. Carbon
3. Hydrogen
4. Nitrogen
Subtopic: Element Analysis |
Level 4: Below 35%
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Hints
Please attempt this question first.
The molecule shown in the given figure is:
1. Uridine
2. Thymidine
3. Uridylic acid
4. Thymidylic acid
1. Uridine
2. Thymidine
3. Uridylic acid
4. Thymidylic acid
Subtopic: Nucleic Acid: Nucleotides |
69%
Level 2: 60%+
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Hints
When a cell is chemically analysed, one feature common to all compounds found in the acid soluble pool is:
1. They are all homopolymers.
2. They are all heteropolymers.
3. They have molecular weight between 18 and 800 daltons.
4. All of them are biomacromolecules.
1. They are all homopolymers.
2. They are all heteropolymers.
3. They have molecular weight between 18 and 800 daltons.
4. All of them are biomacromolecules.
Subtopic: Element Analysis |
79%
Level 2: 60%+
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Hints
What is the number of correct statements amongst the statements given below?
I. Valine is an acidic amino acid.
II. Gingelly oil remains as oil in winters.
III. Abrin, Morphine and Vinblastin are all primary metabolites.
IV. Insulin is a polymer of fructose.
V. In a polysaccharide chain, the right end is the reducing end.
VI. Collagen is most abundant protein in biosphere.
1. 2
2. 3
3. 4
4. 5
I. Valine is an acidic amino acid.
II. Gingelly oil remains as oil in winters.
III. Abrin, Morphine and Vinblastin are all primary metabolites.
IV. Insulin is a polymer of fructose.
V. In a polysaccharide chain, the right end is the reducing end.
VI. Collagen is most abundant protein in biosphere.
1. 2
2. 3
3. 4
4. 5
Subtopic: Amino Acids | Carbohydrates | Lipids | Lipids: Fatty Acids | Different Amino Acids | Primary & Secondary Metabolites |
52%
Level 3: 35%-60%
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