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Q. No.Consider the given two statements:
Assertion (A):
Lipids are not considered macromolecules.
Reason (R):
Lipids are not polymers.
1.
Both (A) and (R) are True and (R) is the correct explanation of (A)
2.
Both (A) and (R) are True but (R) is not the correct explanation of (A)
3.
(A) is True but (R) is False
4.
(A) is False but (R) is True
Subtopic: Lipids |
Level 3: 35%-60%
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Consider the given two statements:
| Assertion (A): | Vitamins are essential components in metabolic processes. |
| Reason (R): | They act as coenzymes and help in the catalysis of biochemical reactions. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A) |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A) |
| 3. | (A) is True but (R) is False |
| 4. | (A) is False but (R) is True |
Subtopic: Enzyme Cofactors |
89%
Level 1: 80%+
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Which of the following is not a characteristic feature of carbohydrates?
| 1. | Most carbohydrates function primarily as structural components in cell walls. |
| 2. | They serve as energy stores, fuels, and metabolic intermediates. |
| 3. | Carbohydrates are commonly found as steroids and hormones in organisms. |
| 4. | They are involved in cell recognition and signalling processes. |
Subtopic: Carbohydrates |
66%
Level 2: 60%+
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Which statement correctly describes the impact of temperature on enzyme activity?
| 1. | Enzyme activity decreases indefinitely as temperature increases due to increased kinetic energy of the substrates. |
| 2. | Enzyme activity increases until an optimum temperature is reached, beyond which activity declines rapidly due to denaturation. |
| 3. | Enzyme activity is independent of temperature changes within the living organism’s permissible range. |
| 4. | High temperatures always increase enzyme stability and, therefore, enhance enzyme activity. |
Subtopic: Factors Affecting Enzyme Catalysis Reaction |
93%
Level 1: 80%+
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Match the following secondary metabolites with their examples as given in the table of NCERT:
Options:
1. 1-A, 2-B, 3-C
2. 1-C, 2-A, 3-B
3. 1-B, 2-C, 3-A
4. 1-C, 2-B, 3-A
| Column A | Column B | ||
| 1. | Alkaloids | A. | Tannins |
| 2. | Terpenoids | B. | Rubber |
| 3. | Polyphenols | C. | Caffeine |
1. 1-A, 2-B, 3-C
2. 1-C, 2-A, 3-B
3. 1-B, 2-C, 3-A
4. 1-C, 2-B, 3-A
Subtopic: Primary & Secondary Metabolites |
Level 4: Below 35%
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Which statement about lipids is correct?
| 1. | Lipids are primarily polar and hydrophilic. |
| 2. | Lipids are polymers of amino acids. |
| 3. | Lipids are generally insoluble in water but soluble in organic solvents. |
| 4. | Lipids are made of glycerol and three phosphate groups. |
Subtopic: Lipids |
85%
Level 1: 80%+
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Which mechanism best describes the action of enzymes?
| 1. | Enzymes work by increasing the temperature of substrates. |
| 2. | Enzymes reduce the activation energy needed for a reaction. |
| 3. | Enzymes provide ATP to reactions. |
| 4. | Enzymes permanently change shape after a reaction. |
Subtopic: Enzyme Catalysis | Mechanism of Enzymes |
93%
Level 1: 80%+
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Identify the correct statements
| Statement I: | Adenine and Guanine are substituted pyrimidines |
| Statement II: | Cytosine, Thymine and Uridine are substituted purines |
| 1. | Statement I is correct and Statement II is incorrect |
| 2. | Statement I is incorrect and Statement II is correct |
| 3. | Both Statement I and Statement II are correct |
| 4. | Both Statement I and Statement II are incorrect |
Subtopic: Nucleic Acid: Nucleotides |
96%
Level 1: 80%+
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Consider the given two statements:
| Assertion (A): | Glycogen has one reducing end. |
| Reason (R): | The reducing end is where non-reducing sugars can be added to the glycogen molecule. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | Both (A) and (R) are False. |
Subtopic: Carbohydrates: Starch & Glycogen |
Level 3: 35%-60%
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At physiological pH, the amino acid exists as a zwitter ion because:
| 1. | It has no net charge. |
| 2. | It has a positive and a negative charge at different parts of the molecule. |
| 3. | It can donate a proton to the surrounding medium. |
| 4. | It can accept a proton from the surrounding medium. |
Subtopic: Zwitter ion & Peptide Bond |
85%
Level 1: 80%+
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