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Q. No.Identify the incorrect statement:
1.
Cytosine is common for both DNA and RNA.
2.
Uracil is present in RNA at the place of Thymine.
3.
A nitrogenous base is linked to the OH of 1'C pentose sugar through a N-glycosidic linkage to form a nucleoside.
4.
When a phosphate group is linked to OH of 2'C of a nucleoside through phosphoester linkage, a corresponding nucleotide is formed.
Subtopic: Nucleic Acid: Nucleotides |
78%
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All the following biomolecules can be called both polymers and macromolecules except:
1. Lipids
2. Proteins
3. Carbohydrates
4. Nucleic acids
1. Lipids
2. Proteins
3. Carbohydrates
4. Nucleic acids
Subtopic: Lipids |
88%
From NCERT
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Which of the following secondary metabolites is a carbohydrate-binding protein [Lectin]?
1. Abrin
2. Vinblastin
3. Curcumin
4. Concanavalin A
1. Abrin
2. Vinblastin
3. Curcumin
4. Concanavalin A
Subtopic: Primary & Secondary Metabolites |
89%
From NCERT
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Subtopic: Amino Acids |
88%
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The activator of alcohol dehydrogenase enzyme is:
| 1. | Zinc | 2. | Magnesium |
| 3. | Manganese | 4. | Molybdenum |
Subtopic: Enzyme Cofactors |
71%
From NCERT
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Consider the two statements:
| Assertion (A): | Iodine-KI reagent can be used to detect starch in a sample. |
| Reason (R): | Starch can hold iodine molecules in its helical portion and starch-iodine is blue in colour. |
| 1. | Both (A) and (R) are True but (R) does not correctly explain(A). |
| 2. | (A) is True but (R) is False. |
| 3. | Both (A) and (R) are False. |
| 4. | Both (A) and (R) are True and (R) correctly explains (A). |
Subtopic: Carbohydrates: Starch & Glycogen |
76%
From NCERT
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In the absence of an enzyme, the catalysed reaction:
| 1. | does not take place |
| 2. | takes place at a very slow rate |
| 3. | takes place at a higher rate |
| 4. | is not affected at all |
Subtopic: Enzymes | Enzyme Catalysis |
84%
From NCERT
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Subtopic: Nucleic Acid | The DNA |
83%
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Subtopic: Proteins |
71%
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Prosthetic groups are distinguished from other cofactors in that they are:
1. tightly bound to the apoenzyme
2. inorganic compounds
3. metal ions
4. vitamins
1. tightly bound to the apoenzyme
2. inorganic compounds
3. metal ions
4. vitamins
Subtopic: Enzyme Cofactors |
91%
From NCERT
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