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Q. No.The number of correct statement(s) from the statements given below is/are:
I:
Cellulose is a polymeric polysaccharide consisting of only one type of monosaccharide.
II:
Starch is a homopolymer.
III:
Inulin is a polymer of fructose.
IV:
In glycogen, the right end is called the reducing end, and the left end is called the non-reducing end.
1. 1
2. 2
3. 3
4. 4
Subtopic: Carbohydrates: Starch & Glycogen | Carbohydrates: Cellulose, Chitin, Inulin & Agar |
77%
From NCERT
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If the R group in a proteinaceous amino acid is called hydroxy methyl, the amino acid must be:
1. phenylalanine
2. serine
3. alanine
4. tyrosine
1. phenylalanine
2. serine
3. alanine
4. tyrosine
Subtopic: Different Amino Acids |
91%
From NCERT
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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 |
94%
From NCERT
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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%
From NCERT
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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%
From NCERT
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Subtopic: Introduction to Proteins | Zwitter ion & Peptide Bond | Structural Organisation of Proteins |
76%
From NCERT
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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%
From NCERT
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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%
From NCERT
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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%
From NCERT
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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 |
91%
From NCERT
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