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Q. No.Consider the statements 'A' and 'B' and select the correct option:
Statement A:
Just like inorganic catalysts, enzymes work efficiently at high temperatures and high pressures
Statement B:
Thermal stability is an important quality of enzymes isolated from thermophilic organisms
1. Both Statement A and Statement B are correct
2. Only Statement A is correct
3. Only Statement B is correct
4. Both Statement A and Statement B are incorrect
Subtopic: Enzymes |
76%
Level 2: 60%+
Hints
Read the statements given below carefully:
How many of the statements given above are correct?
| (a) | Lipids are generally water soluble. |
| (b) | Dietary proteins are the source of essential amino acids. |
| (c) | Paper made from plant pulp and cotton fibre is cellulosic in nature. |
| (d) | In a nucleic acid, the bond between the phosphate and hydroxyl group of sugar is an ester bond. |
| 1. | One | 2. | Two |
| 3. | Three | 4. | Four |
Subtopic: Nucleic Acid | Proteins | Carbohydrates | Lipids | Carbohydrates: Glycosidic Bond & Disaccharide |
75%
Level 2: 60%+
Hints
Read the statements given below and select the correct option:
| (a) | In glycogen, the right end is the reducing one |
| (b) | Cellulose and starch form complex helices |
| (c) | Starch is the main structural component of papers made from plant pulp |
| 1. | Statements (a) and (b) are correct while statement (c) is incorrect |
| 2. | Statements (a) and (c) are correct while statement (b) is incorrect |
| 3. | Statements (b) and (c) are incorrect while statement (a) is correct |
| 4. | Statements (a) and (c) are incorrect while statement (b) is correct |
Subtopic: Carbohydrates: Starch & Glycogen |
60%
Level 2: 60%+
Hints
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Read the given statements carefully and select the correct option
| Statement A: | Tyrosine contains two aromatic rings in its structure |
| Statement B: | Sulphur is an integral part of tyrosine |
| 1. | Both statements A and B are correct |
| 2. | Both statements A and B are incorrect |
| 3. | Only statement A is correct |
| 4. | Only statement B is correct |
Subtopic: Proteins |
Level 3: 35%-60%
Hints
Read the following given statements with respect to nucleic acids.
How many of the above statements are incorrect?
1. One
2. Two
3. Three
4. Four
| (a) | DNA possesses ribose sugar in its structure. |
| (b) | Thymine bonds with cytosine through two hydrogen bonds. |
| (c) | The rise per base pair in B-DNA would be 3.4 Å. |
| (d) | The pitch of B-DNA would be 34 nm. |
How many of the above statements are incorrect?
1. One
2. Two
3. Three
4. Four
Subtopic: The DNA |
Level 3: 35%-60%
Hints
| Assertion (A): | Co-enzymes are inorganic compounds that bind tightly with the apoenzyme to form a holoenzyme. |
| Reason (R): | Co-enzymes and prosthetic groups are cofactors. |
| 1. | (A) is False but (R) is True. |
| 2. | (A) is True but (R) is False. |
| 3. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 4. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
Subtopic: Enzyme Cofactors |
73%
Level 2: 60%+
Hints
| Assertion (A): | Humans are advised to take a diet rich in proteins. |
| Reason (R): | Essential amino acids cannot be synthesized by the human body. |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true and (R) is not the correct explanation of (A). |
| 3. | (A) is true, (R) is false. |
| 4. | (A) is false, (R) is true. |
Subtopic: Proteins |
Level 4: Below 35%
Hints
Match column I with column II and select the correct option:
1. a(iii), b(i), c(ii), d(iv)
2. a(i), b(iii), c(ii), d(iv)
3. a(i), b(iii), c(iv), d(ii)
4. a(iii), b(i), c(iv), d(ii)
| Column I | Column II | ||
| a. | Down's syndrome | (i) | Bacterial disease |
| b. | Diphtheria | (ii) | Cannot hold I2 |
| c. | Cellulose | (iii) | Congenital disorder |
| d. | Starch | (iv) | Helical secondary structures |
1. a(iii), b(i), c(ii), d(iv)
2. a(i), b(iii), c(ii), d(iv)
3. a(i), b(iii), c(iv), d(ii)
4. a(iii), b(i), c(iv), d(ii)
Subtopic: Carbohydrates |
80%
Level 1: 80%+
Hints
Following statements are with reference to ‘lipids’.
Choose the option with correct statements only:
1. (a) and (b)
2. (b) and (e)
3. (c) and (d)
4. (b) and (c)
| (a) | Acetic acid is a precursor of a derived lipid called cholesterol. |
| (b) | Lecithin is a phospholipid found in the cell membrane. |
| (c) | Glycerol is trihydroxy propane, considered an alcohol but not a lipid. |
| (d) | Palmitic acid has 16 carbons excluding carboxyl carbon. |
| (e) | Arachidonic acid is a saturated fatty acid which has 19 carbons excluding carboxyl carbon. |
1. (a) and (b)
2. (b) and (e)
3. (c) and (d)
4. (b) and (c)
Subtopic: Lipids |
Level 3: 35%-60%
Hints
How many of the following statements are correct about lipids?
Select the correct option from the following.
1. Four
2. Three
3. Two
4. One
| a. | Trihydroxy propane is an example of a simple lipid. |
| b. | Fatty acids with one or more C = C double bonds are said to be saturated. |
| c. | Palmitic acid has 16 carbons excluding the carboxyl carbon. |
| d. | Lecithin is an example of a phospholipid. |
1. Four
2. Three
3. Two
4. One
Subtopic: Lipids |
71%
Level 2: 60%+
Hints
Select Chapter Topics:
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