Enzymes work at optimum temperature. Over a rang 0 - 40oC, what would happen to the rate of enzyme controlled reactions for every 10oC rise in temperature?
1. The rate doubles itself
2. Decreases by half
3. No effect
4. First increases then decreases
Subtopic: Factors Affecting Enzyme Catalysis Reaction |
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Sugar that converts \(Cu^{2+} \rightarrow Cu^+\) during Benedict's test in not
1. Sucrose
2. Glucose
3. Fructose
4. Ribose
1. Sucrose
2. Glucose
3. Fructose
4. Ribose
Subtopic: Carbohydrates: Introduction |
59%
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You isolate an unidentified liquid ‘X' from a sample of beans. You add the liquid ‘X' to a beaker of water and shake it vigorously. After few minutes, water and the liquid ‘X' get separated into two layers where ‘X' floats on water. The unknown liquid ‘X' is most likely to be a/an
1. Enzyme
2. Protein
3. Lipid
4. Carbohydrate
1. Enzyme
2. Protein
3. Lipid
4. Carbohydrate
Subtopic: Lipids |
83%
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When a substrate binds to the active site of the enzyme, the altered structure of the substrate released by enzyme is called
| 1. | Product |
| 2. | Transition state |
| 3. | Enzyme-substrate complex |
| 4. | Enzyme-product complex |
Subtopic: Enzymes |
From NCERT
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Abrin and ricin are classified under which category of secondary metabolites?
1. Alkaloids
2. Drugs
3. Pigments
4. Toxins
1. Alkaloids
2. Drugs
3. Pigments
4. Toxins
Subtopic: Primary & Secondary Metabolites |
88%
From NCERT
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Most structural proteins are
1. Globular
2. Fibrous
3. Both (1) and (2)
4. Left-handedly coiled
1. Globular
2. Fibrous
3. Both (1) and (2)
4. Left-handedly coiled
Subtopic: Proteins |
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Match columns I and II.
Choose the correct option.
1. a(i), b(ii), c(iii), d(iv)
2. a(ii), b(iii), c(iv), d(i)
3. a(iii), b(iv), c(i), d(ii)
4. a(iv), b(i), c(ii), d(iii)
| Column I | Column II | |
| a | Trypsin | Hydrolyeses peptide bond |
| b | Cellulose | Unbranched polymer with -1,4 glycosidic linkages |
| c | Collagen | Most abundant protein in the animal world |
| d | Glut-4 | Enables glucose transport into cells |
1. a(i), b(ii), c(iii), d(iv)
2. a(ii), b(iii), c(iv), d(i)
3. a(iii), b(iv), c(i), d(ii)
4. a(iv), b(i), c(ii), d(iii)
Subtopic: Proteins | Carbohydrates: Starch & Glycogen | Carbohydrates: Cellulose, Chitin, Inulin & Agar |
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Subtopic: Amino Acids |
57%
From NCERT
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Glycogen on hydrolysis yields
| 1. | Glucose and maltose | 2. | Glucose and fructose |
| 3. | Lactose and glucose | 4. | Only glucose |
Subtopic: Carbohydrates: Starch & Glycogen |
71%
From NCERT
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Choose the correct Statements.
1. i and ii only
2. ii and iii
3. i, ii and iv
4. iii only
| i. | Starch in plants and glycogen in animals are storage molecules |
| ii. | Starch can hold iodine, molecules in its helical loops but cellulose being non-helical cannot hold iodine. |
| iii. | Chitin, a heteropolysaccharide occurring in the exoskeleton of arthropods, consists of N-acetyl glucosamine. |
| iv. | Right end of polysaccharide is called reducing end while left end is called non-acetyl glucosamine. |
1. i and ii only
2. ii and iii
3. i, ii and iv
4. iii only
Subtopic: Carbohydrates |
51%
From NCERT
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