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 |
88%
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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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Which one of the following represents a set of homopolymers?
| 1. | Peptidoglycan, glycogen and starch |
| 2. | Cellulose, insulin and polypeptides |
| 3. | Insulin, chitin and pectin |
| 4. | Starch, cellulose and inulin |
Subtopic: Carbohydrates: Cellulose, Chitin, Inulin & Agar |
72%
From NCERT
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Subtopic: Nucleic Acid: Nucleotides |
81%
From NCERT
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Subtopic: Lipids: Glycerolipids, Phospholipids & Glycerol |
83%
From NCERT
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