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Q. No.Identify the incorrect statement:
1.
Lipids are generally water insoluble.
2.
Fatty acids could be saturated (without double bond) or unsaturated (with one or more C=C double bonds).
3.
Glycerol is trihydroxy propane.
4.
No lipids have both glycerol and fatty acids.
Subtopic: Lipids: Fatty Acids |
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All the following will be secondary metabolites synthesised by living organisms, except:
1. flavonoids
2. antibiotics
3. starch
4. gums
1. flavonoids
2. antibiotics
3. starch
4. gums
Subtopic: Primary & Secondary Metabolites |
73%
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The molecules in the acid insoluble fraction of a cell:
| 1. | have molecular weights ranging from 18 to around 800 daltons (Da) approximately. |
| 2. | include lipids. |
| 3. | are all polymeric substances. |
| 4. | correspond to the cytoplasm of a typical cell. |
Subtopic: Element Analysis |
72%
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Subtopic: Introduction to Proteins | Zwitter ion & Peptide Bond | Structural Organisation of Proteins |
76%
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Consider the given two statements:
| Assertion: | The starch-I2 is blue in colour. |
| Reason: | Starch forms helical secondary structures and can hold I2 molecules in the helical portion. |
| 1. | (A) is True but (R) is False. |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is False but (R) is True. |
| 4. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
Subtopic: Carbohydrates: Starch & Glycogen |
88%
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Consider the two statements:
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
| I: | In a polypeptide or a protein, amino acids are linked by a peptide bond. |
| II: | In a polysaccharide, the individual monosaccharides are linked by a glycosidic bond. |
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Proteins | Zwitter ion & Peptide Bond | Carbohydrates: Glycosidic Bond & Disaccharide |
95%
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Like a protein, an enzyme, almost always:
I: has a primary structure
II: has the secondary and the tertiary structure
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
I: has a primary structure
II: has the secondary and the tertiary structure
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Enzyme Introduction | Introduction to Proteins | Structural Organisation of Proteins |
60%
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A crevice or pocket into which the substrate fits forms the:
1. tertiary structure of an enzyme.
2. active site of an enzyme.
3. tertiary structure of an enzyme.
4. allosteric site on an enzyme.
1. tertiary structure of an enzyme.
2. active site of an enzyme.
3. tertiary structure of an enzyme.
4. allosteric site on an enzyme.
Subtopic: Mechanism of Enzymes | Enzyme Introduction |
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Rate of a physical or chemical process:
I: refers to the amount of product formed per unit time.
II: can also be called velocity if the direction is specified.
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
I: refers to the amount of product formed per unit time.
II: can also be called velocity if the direction is specified.
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Properties of Enzymes | Mechanism of Enzymes | Enzyme Introduction |
94%
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An enzyme catalysed biochemical reaction in a living organism is being carried out at a certain rate at 20°C. If the temperature is raised to 30°C, it is generally expected that the rate:
1. will double
2. will decrease by half
3. will remain the same
4. will become zero and the reaction will stop
1. will double
2. will decrease by half
3. will remain the same
4. will become zero and the reaction will stop
Subtopic: Mechanism of Enzymes | Enzyme Introduction |
75%
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