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Q. No.Assertion (A): Hydrolases are the enzymes which catalyse the hydrolysis of ester, ether, peptide and glycosidic bonds.
Reason (R): Lyases functions as ligases.
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: Enzymes Classification |
86%
From NCERT
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Assertion (A): Enzymes get denatured at high temperature
Reason (R): Inorganic catalyst work efficiently at high temperatures.
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.
Reason (R): Inorganic catalyst work efficiently at high temperatures.
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: Enzyme Catalysis | Properties of Enzymes |
90%
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Assertion (A): Enzymes are divided into eight different classes.
Reason (R): The most important of all classes is ligases.
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.
Reason (R): The most important of all classes is ligases.
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: Enzymes Classification |
74%
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Which of the following is true for non-competitive enzyme inhibition?
1. Vmax decreases, Km remains same
2. Inhibitor can attach with the enzyme at a region other than active site
3. A typical example is cyanide inhibiting cytochrome oxidase
4. More than one option is true.
1. Vmax decreases, Km remains same
2. Inhibitor can attach with the enzyme at a region other than active site
3. A typical example is cyanide inhibiting cytochrome oxidase
4. More than one option is true.
Subtopic: Enzyme Inhibition: Introduction | Enzyme Inhibition |
70%
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Inulin is a collection of:
1. Fructose polymers
2. Sucrose polymers
3. Lactose polymers
4. Glucose polymers
1. Fructose polymers
2. Sucrose polymers
3. Lactose polymers
4. Glucose polymers
Subtopic: Carbohydrates | Carbohydrates: Cellulose, Chitin, Inulin & Agar |
96%
From NCERT
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'Monellin' is :
1. A non-toxic sweetener
2. A protein obtained from a West African berry plant
3. Both (1) and (2)
4. A polysaccharide
1. A non-toxic sweetener
2. A protein obtained from a West African berry plant
3. Both (1) and (2)
4. A polysaccharide
Subtopic: Carbohydrates: Cellulose, Chitin, Inulin & Agar |
79%
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How many unsaturated fatty acids are mentioned in the box?
1. Five
2. Two
3. One
4. Four
| Arachidonic acid, Palmitic acid, Oleic acid, Stearic acid, Linoleic acid, Linolenic acid |
2. Two
3. One
4. Four
Subtopic: Lipids | Lipids: Fatty Acids |
56%
From NCERT
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Arrange the following RNA in relative abundance present in a cell:
1. rRNA > tRNA > mRNA
2. rRNA > mRNA > rRNA
3. tRNA > rRNA > mRNA
4. mRNA > rRNA > tRNA
| tRNA, mRNA, rRNA |
2. rRNA > mRNA > rRNA
3. tRNA > rRNA > mRNA
4. mRNA > rRNA > tRNA
Subtopic: Nucleic Acid |
54%
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Which one of the following is incorrect for uncompetitive inhibition?
1. Vmax and Km both decreases
2. ES, ESI are possible but EI is not possible
3. Vmax and Km both increases
4. All are incorrect
1. Vmax and Km both decreases
2. ES, ESI are possible but EI is not possible
3. Vmax and Km both increases
4. All are incorrect
Subtopic: Enzyme Inhibition: Introduction | Enzyme Inhibition |
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Read the enzymatic reation and choose the correct option:
I.
II.
III.
IV.
V.
I.
II.
III.
IV.
V.
| Oxidore ductase | Transferase | Hydrolase | Lyase | Ligase | |
| 1. | Alcohol dehydrogenase | Glucohexo kinase | Sucrase/Invertase | Aldolase | PEP-Carboxylase |
| 2. | Alcohol dehydrogenase | Glucohexo kinase | Aldolase | PEP-Carboxylase | Invertase |
| 3. | PEP-Carboxylase | Glucohexo kinase | Invertase | Sucrase | Aldolase |
| 4. | Aldolase | Invertase | Aldolase | PEP-Carboxylase | Glucohexo kinase |
Subtopic: Enzymes Classification |
61%
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