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Q. No.Which naturally occurring amino acid contains only one basic functional group?
1.
Arginine
2.
Lysine
3.
Histidine
4.
Isoleucine
Subtopic: α - Amino Acids, Peptide Bond, Proteins & Structure |
Level 3: 35%-60%
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Given below are two statements:
In the light of the above statements choose the correct answer from the options given below:
| Statement I: | A unit formed by the attachment of a base to 1' position of sugar is known as a nucleoside. |
| Statement II: | When nucleoside is linked to a phosphorous acid at 5' position of sugar moiety, we get nucleotide. |
| 1. | Statement I is false but Statement II is true. |
| 2. | Both Statement I and Statement II are true. |
| 3. | Both Statement I and Statement II are false. |
| 4. | Statement I is true but Statement II is false. |
Subtopic: DNA, RNA & Metal Ions |
Level 4: Below 35%
NEET - 2023
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The figure shows a hypothetical tetrapeptide portion of a protein with parts labelled A-D. Which one of the following options is correct?
| 1. | D is the acidic amino acid - glutamic acid |
| 2. | C is an aromatic amino acid - tryptophan |
| 3. | A is the C-terminal amino acid and D is N terminal amino acid |
| 4. | A is the sulphur containing amino acid-methionine |
Subtopic: α - Amino Acids, Peptide Bond, Proteins & Structure |
57%
Level 3: 35%-60%
NEET - 2013
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Subtopic: DNA, RNA & Metal Ions |
Level 3: 35%-60%
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| Statement I: | Pentaacetate of cyclic glucose reacts with hydroxylamine |
| Statement II: | Glucose on oxidation with nitric acid yields gluconic acid. |
| 1. | Statement I is correct but Statement II is incorrect |
| 2. | Statement I is incorrect but Statement II is correct |
| 3. | Both Statement I and Statement II are correct |
| 4. | Both Statement I and Statement II are incorrect |
Subtopic: Carbohydrates - Classification & D-L configuration |
51%
Level 3: 35%-60%
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Subtopic: α - Amino Acids, Peptide Bond, Proteins & Structure |
50%
Level 3: 35%-60%
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Which of the following diseases is caused by a deficiency of Vitamin \(\mathrm{B_2}\)?
| 1. | Beri-Beri | 2. | Cheilosis |
| 3. | Pernicious anaemia | 4. | Convulsions |
Subtopic: Vitamins, Hormones & Enzymes |
53%
Level 3: 35%-60%
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Subtopic: α - Amino Acids, Peptide Bond, Proteins & Structure |
Level 3: 35%-60%
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The symptom that is not shown by a person suffering from vitamin B2 deficiency is:
1. Retarded growth
2. Digestive disorders
3. Burning sensation of skin
4. Fissuring at the corners of the mouth
1. Retarded growth
2. Digestive disorders
3. Burning sensation of skin
4. Fissuring at the corners of the mouth
Subtopic: Vitamins, Hormones & Enzymes |
56%
Level 3: 35%-60%
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Consider the following reactions:
'x', 'y', and 'z' in the above-given reactions are, respectively:
1. 5, 4, and 5
2. 4, 6, and 5
3. 4, 5, and 5
4. 5, 6, and 5
| (i) | \(\small {Glucose + ROH} \xrightarrow { \text {dry HCl}} \text {Acetal} \xrightarrow [(CH_3CO)_2O] { x~ eq. of} \text {acetyl derivative}\) |
| (ii) | \(\text {Glucose } \xrightarrow { {Ni}/H_2} \text {A} \xrightarrow [(CH_3CO)_2O] { y~ eq. of} \text {acetyl derivative}\) |
| (iii) | \(\text {Glucose } \xrightarrow [(CH_3CO)_2O] { z~ eq. of} \text {acetyl derivative}\) |
1. 5, 4, and 5
2. 4, 6, and 5
3. 4, 5, and 5
4. 5, 6, and 5
Subtopic: Carbohydrates - Classification & D-L configuration |
Level 3: 35%-60%
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