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Q. No.Consider the given two statements:
I. The term ‘carbohydrate’ meaning ‘hydrated carbon’ is a misnomer.
II. In the synthesis of such molecules, a water molecule is simply attached to each carbon atom.
1. Both I and II are correct and II explains I
2. Both I and II are correct but II does not explain I
3. I is correct and II is incorrect
4. Both I and II are incorrect
I. The term ‘carbohydrate’ meaning ‘hydrated carbon’ is a misnomer.
II. In the synthesis of such molecules, a water molecule is simply attached to each carbon atom.
1. Both I and II are correct and II explains I
2. Both I and II are correct but II does not explain I
3. I is correct and II is incorrect
4. Both I and II are incorrect
Subtopic: Carbohydrates |
55%
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Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R):
In the light of the above statements choose the correct answer from the options given below:
| Assertion (A): | Lipids are macromolecules |
| Reason (R): | They have a molecular weight range of ten thousand Daltons and above. |
| 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: Element Analysis |
From NCERT
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Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R):
In the light of the above statements, choose the correct answer from the options given below:
| Assertion (A): | Dietary proteins are the source of essential amino acids. |
| Reason (R): | All essential amino acids are aromatic. |
| 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: Proteins |
85%
From NCERT
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Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R):
| Assertion (A): | Low temperature destroys enzymatic activity. |
| Reason (R): | Proteins are denatured when exposed to low temperatures. |
In the light of the above statements choose the correct answer from the options given below:
| 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: Factors Affecting Enzyme Catalysis Reaction |
70%
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Identify the incorrect statement:
1. Insulin is a polymer of fructose.
2. Cellulose is a homopolymer
3. Starch is a homopolymer
4. Chitin is nitrogen containing complex polysaccharide
1. Insulin is a polymer of fructose.
2. Cellulose is a homopolymer
3. Starch is a homopolymer
4. Chitin is nitrogen containing complex polysaccharide
Subtopic: Proteins |
72%
From NCERT
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Which of the following organic molecule is not correctly matched with diagrammatic representation of its structure?
| 1. | Alanine | .svg) |
| 2. | Palmitic acid | \(CH_3 - {(CH_2)}_{14} - COOH\) |
| 3. | Glycerol | .svg) |
| 4. | Adenylic acid | .svg) |
Subtopic: Element Analysis |
74%
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Identify the incorrectly matched pair:
| 1. | Glycerol | Trihydroxy propane |
| 2. | Lecithin | Phospholipid |
| 3. | Glycine | Beta amino acid |
| 4. | Lysine | Basic amino acid |
Subtopic: Amino Acids |
84%
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Regarding polysaccharides:
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
| I: | Cellulose does not contain complex helices. |
| II: | Inulin is a polymer of fructose. |
| III: | Left end of glycogen is the reducing end |
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct
Subtopic: Carbohydrates | Carbohydrates: Starch & Glycogen | Carbohydrates: Cellulose, Chitin, Inulin & Agar |
71%
From NCERT
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An enzyme catalysed reaction is running optimally at 40oC. If the temperature is reduced to 20oC, the rate of reaction is expected to:
| 1. | Double | 2. | Half |
| 3. | Increase four time | 4. | Reduce to a quarter |
Subtopic: Factors Affecting Enzyme Catalysis Reaction |
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Identify the incorrect statement:
| 1. | Zinc is a cofactor for carboxypeptidase |
| 2. | NADP contains the vitamin cyanocobalamin |
| 3. | Malonate is a competitive inhibitor of Succinic dehydrogenase |
| 4. | Haem is the prosthetic group in peroxidase |
Subtopic: Enzyme Cofactors |
82%
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