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Q. No.The chemical components of a nucleotide do not include:
1. A heterocyclic compound
2. A monosaccharide
3. A phosphate
4. A saturated fatty acid
Subtopic: Nucleic Acid: Nucleotides |
84%
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Identify the given molecules:
| I | II | |
| 1. | 2’ deoxyribose | Ribose |
| 2. | Ribose | 2’ deoxyribose |
| 3. | Adenosine | Adenylic acid |
| 4. | α glucose | β glucose |
Subtopic: Nucleic Acid |
74%
From NCERT
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In a nucleic acid:
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: | a phosphate moiety links the 5’ carbon of one sugar of one nucleotide to the 1’ carbon of the sugar of the succeeding nucleotide. |
| II: | the backbone of the strand is made up of alternate sugar and nitrogenous bases. |
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: The DNA | Double Helix : Watson & Crick |
52%
From NCERT
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Consider the given two statements:
| Statement I: | In a double stranded DNA molecule, the amount of Guanine should be equal to Cytosine and the amount of Adenine should be equal to Thymine. |
| Statement II: | There are two hydrogen bonds between Adenine and Thymine and three hydrogen bonds between Guanine and Cytosine. |
| 1. | Both Statement I and Statement II are correct and Statement II correctly explains Statement I |
| 2. | Both Statement I and Statement II are correct but Statement II does not correctly explain Statement I |
| 3. | Statement I is correct but Statement II is incorrect |
| 4. | Statement I is incorrect but Statement II is correct |
Subtopic: DNA Double Helix |
66%
From NCERT
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Consider the given two statements:
| Statement I: | Iodine test can detect the presence of starch but not of cellulose in a given sample. |
| Statement II: | Starch forms helical secondary structure and can hold iodine molecules while cellulose does not contain complex helices and hence cannot hold iodine. |
| 1. | Both Statement I and Statement II are correct and Statement II correctly explains Statement I |
| 2. | Both Statement I and Statement II are correct but Statement II does not correctly explain Statement I |
| 3. | Statement I is correct but Statement II is incorrect |
| 4. | Statement I is incorrect but Statement II is correct |
Subtopic: Carbohydrates | Carbohydrates: Starch & Glycogen |
90%
From NCERT
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Consider the given two statements:
1. Only Statement I is correct
2. Only Statement II is correct
3. Both Statement I and Statement II are correct
4. Both Statement I and Statement II are incorrect
| Statement I: | The right end of the glycogen molecule is called the reducing end and the left end is called the non-reducing end. |
| Statement II: | Glycogen is a homopolymer of alpha glucose. |
2. Only Statement II is correct
3. Both Statement I and Statement II are correct
4. Both Statement I and Statement II are incorrect
Subtopic: Carbohydrates: Starch & Glycogen |
78%
From NCERT
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Consider the given two statements:
| I: | Palmitic acid has 16 carbons including the carboxyl carbon. |
| II: | Arachidonic acid has 20 carbons including the carboxyl carbon. |
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Lipids |
91%
From NCERT
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The number of:
| 1. | Aromatic proteinogenic amino acids is 5 |
| 2. | Carbon atoms in arachidonic acid including carboxyl carbon is 20 |
| 3. | Fatty acids in cholesterol is 3 |
| 4. | Polypeptide chains in quaternary structure of haemoglobin is 2 |
Subtopic: Lipids: Glycerolipids, Phospholipids & Glycerol |
87%
From NCERT
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An enzyme catalysed reaction is running optimally at 40oC. If the temperature is reduced to 20oC, the rate of reaction is expected to:
1. Double
2. Half
3. Increase four time
4. Reduce to a quarter
1. Double
2. Half
3. Increase four time
4. Reduce to a quarter
Subtopic: Factors Affecting Enzyme Catalysis Reaction |
52%
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Glucose transporter type 4 [GLUT-4]:
1. is widely distributed in fetal tissues.
2. is expressed at highest levels in erythrocytes
3. is expressed mostly in neurons
4. enables glucose transport into cells
1. is widely distributed in fetal tissues.
2. is expressed at highest levels in erythrocytes
3. is expressed mostly in neurons
4. enables glucose transport into cells
Subtopic: Proteins |
93%
From NCERT
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