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Q. No.Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R):
Assertion (A):
Lipids are macromolecules
Reason (R):
They have a molecular weight range of ten thousand Daltons and above.
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: Element Analysis |
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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 peroxidise |
Subtopic: Enzyme Cofactors |
82%
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The number of:
| 1. | Aromatic proteinogenic amino acids is 5 |
| 2. | Carbon atoms in arachidonic acid including carboxyl carbon is 20 |
| 3. | Fatty acids in cholesterol is 3 |
| 4. | Polypeptide chains in quaternary structure of haemoglobin is 2 |
Subtopic: Lipids: Glycerolipids, Phospholipids & Glycerol |
86%
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