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Q. No.
Assertion(A):
The acid-insoluble fraction contains lipids and proteins.
Reason(R):
The molecular weight of proteins and lipids is in the range of ten thousand daltons and above.
In the light of the above statements, select the option with the correct answer.
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, (R) is false.
4.
(A) is false, (R) is true.
Subtopic: Element Analysis | Introduction |
70%
From NCERT
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Match the items listed in column-I with column-II.
Choose the correct option.
1. a(iii), b(iv), c(i), d(ii)
2. a(iv), b(iii), c(ii), d(i)
3. a(iv), b(ii), c(iii), d(i)
4. a(iv), b(iii), c(i), d(ii)
| Column -I | Column-II | ||
| a. | Cellulose | (i) | Storehouse of energy in plants |
| b. | Inulin | (ii) | Exoskeleton of arthropods |
| c. | Starch | (iii) | Polymer of fructose |
| d. | Chitin | (iv) | Structural element of plant cell wall |
1. a(iii), b(iv), c(i), d(ii)
2. a(iv), b(iii), c(ii), d(i)
3. a(iv), b(ii), c(iii), d(i)
4. a(iv), b(iii), c(i), d(ii)
Subtopic: Carbohydrates: Glycosidic Bond & Disaccharide | Carbohydrates: Starch & Glycogen | Carbohydrates: Cellulose, Chitin, Inulin & Agar |
86%
From NCERT
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Read the statements given below and select the option that correctly identifies them as True(T) or False(F).
a b c d
1. F T T T
2. F T F T
3. T F T T
4. T T T T
| a. | Alanine is a sulphur containing amino acid |
| b. | Tyrosine is an aromatic amino acid |
| c. | Uracil is a substituted pyrimidine found in nucleic acids containing deoxyribose sugar |
| d. | The nitrogenous bases are projected more or less perpendicular to the sugar-phosphate backbone of polynucleotide chain |
1. F T T T
2. F T F T
3. T F T T
4. T T T T
Subtopic: Amino Acids |
76%
From NCERT
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Match column I with column II and select the correct option:
1. a(iii), b(i), c(iv), d(ii)
2. a(i), b(ii), c(iii), d(iv)
3. a(iii), b(i), c(ii), d(iv)
4. a(ii), b(i), c(iii), d(iv)
| Column I | Column II | ||
| a. | The structural component of the cell wall of fungi | (i) | Malonate |
| b. | Competitive inhibitor of succinic dehydrogenase |
(ii) | Sucrose |
| c. | Glycosidic bond | (iii) | Chitin |
| d. | Alkaloid used as painkiller | (iv) | Morphine |
1. a(iii), b(i), c(iv), d(ii)
2. a(i), b(ii), c(iii), d(iv)
3. a(iii), b(i), c(ii), d(iv)
4. a(ii), b(i), c(iii), d(iv)
Subtopic: Primary & Secondary Metabolites | Carbohydrates: Glycosidic Bond & Disaccharide | Carbohydrates: Cellulose, Chitin, Inulin & Agar |
94%
From NCERT
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| Assertion(A): | When glucose is catabolised to lactic acid, energy is liberated. |
| Reason(R): | In an exothermic reaction, the energy level of ‘Product’ (lactic acid) is lower than that of ‘Substrate’ (glucose). |
| 1. | Both (A) and (R) are true but (R) is not the correct explanation of (A) |
| 2. | Both (A) and (R) are true and (R) is the correct explanation of (A) |
| 3. | (A) is true, (R) is false |
| 4. | (A) is false, (R) is true |
Subtopic: Enzyme Catalysis | Introduction |
From NCERT
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Match column-I with column-II and select the correct option
1. a(ii), b(iv), c(iii), d(i)
2. a(iii), b(iv), c(ii), d(i)
3. a(i), b(iv), c(ii), d(iii)
4. a(iii), b(ii), c(iv), d(i)
| Column-I | Column-II | ||
| a. | Retentate | (i) | Diterpenes |
| b. | Aromatic amino acid | (ii) | Valine |
| c. | Neutral amino acid | (iii) | Nucleic acids |
| d. | Terpenoids | (iv) | Tryptophan |
1. a(ii), b(iv), c(iii), d(i)
2. a(iii), b(iv), c(ii), d(i)
3. a(i), b(iv), c(ii), d(iii)
4. a(iii), b(ii), c(iv), d(i)
Subtopic: Introduction | Primary & Secondary Metabolites |
92%
From NCERT
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Consider the statements 'A' and 'B' and select the correct option:
1. Both statements A and B are correct
2. Only statement A is correct
3. Only statement B is correct
4. Both statements A and B are incorrect
| 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 |
2. Only statement A is correct
3. Only statement B is correct
4. Both statements A and B are incorrect
Subtopic: Enzymes |
76%
From NCERT
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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%
From NCERT
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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 |
58%
From NCERT
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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
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 |
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