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Q. No.How many of the following statements are correct about lipids?
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.
Select the correct option from the following.
1. Four
2. Three
3. Two
4. One
Subtopic: Lipids |
67%
From NCERT
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Match the entries in column I and column II. Which one of the following choices is correct?
1. a-3, b-1, c-4, d-2
2. a-4, b-3, c-1, d-2
3. a-2, b-1, c-3, d-4
4. a-4, b-1, c-3, d-2
| Column I | Column II | ||
| (a) | Haem | 1. | Metallic Cofactor |
| (b) | NAD | 2. | Vitamin |
| (c) | Zinc | 3. | Coenzyme |
| (d) | Niacin | 4. | Prosthetic group |
1. a-3, b-1, c-4, d-2
2. a-4, b-3, c-1, d-2
3. a-2, b-1, c-3, d-4
4. a-4, b-1, c-3, d-2
Subtopic: Enzyme Cofactors |
90%
From NCERT
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Assertion (A): Adenine cannot pair with cytosine.
Reason (R): Adenine specifically forms hydrogen bonds with guanine whereas cytosine forms hydrogen bond with thymine.
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): Adenine specifically forms hydrogen bonds with guanine whereas cytosine forms hydrogen bond with thymine.
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: Nucleic Acid | Nucleic Acid: Nucleotides |
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Assertion (A): Co-enzyme is a non-protein group without which certain enzymes are inactive or incomplete.
Reason (R): Coenzymes not only provide a point of attachment of the chemical group being transformed but also influence the properties of the group.
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): Coenzymes not only provide a point of attachment of the chemical group being transformed but also influence the properties of the group.
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 Cofactors |
62%
From NCERT
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Assertion (A): Competitive inhibitor is also called substrate analogue.
Reason (R): It resembles the enzymes in structure.
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): It resembles the enzymes in structure.
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: Factors Affecting Enzyme Catalysis Reaction |
From NCERT
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Assertion (A): Enzymes lower down the activation energy of the reactant molecule to make its transition into product easier.
Reason (R): Enzymes are highly substrate specific catalysts.
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): Enzymes are highly substrate specific catalysts.
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 | Enzyme Catalysis | Factors Affecting Enzyme Catalysis Reaction | Properties of Enzymes | Mechanism of Enzymes | Enzyme Introduction |
79%
From NCERT
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Assertion (A): All the proteinaceous enzymes have a 3-D structure.
Reason (R): The secondary structure of protein is according to amino acid present inside the polypeptides.
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 secondary structure of protein is according to amino acid present inside the polypeptides.
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: Element Analysis | Enzyme Introduction |
51%
From NCERT
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Assertion (A): Glutamine contains amide group.
Reason (R): Isoelectric point of glutamine is 7.
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): Isoelectric point of glutamine is 7.
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: Amino Acids | Proteins |
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Assertion (A): Starch is a polymer of glucose.
Reason (R) : It is made of several glucose units.
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) : It is made of several glucose units.
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: Carbohydrates | Carbohydrates: Starch & Glycogen |
87%
From NCERT
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Assertion (A): Keratin sulphate consists of acetyl glucosamine, galactose and sulphuric acid.
Reason (R): Keratin provides strength and flexibility to skin and cornea.
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): Keratin provides strength and flexibility to skin and cornea.
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: Proteins |
57%
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