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Q. No.Cheilosis occurs due to the deficiency of:
1.
Thiamine
2.
Nicotinamide
3.
Pyridoxamine
4.
Riboflavin
Subtopic: Vitamins, Hormones & Enzymes |
70%
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NEET - 2023
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Fructose can cyclize into a five-membered ring known as a furanose. The hydroxyl group attached to that carbon of fructose which behaves as nucleophilic during the formation of a furan is:
| 1. | Carbon 1 | 2. | Carbon 3 |
| 3. | Carbon 5 | 4. | Carbon 6 |
Subtopic: Carbohydrates - Classification & D-L configuration |
67%
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The force which does not stabilize secondary and tertiary protein is:
| 1. | H–H linkage | 2. | S–S linkage |
| 3. | Van Der Waal’s Force | 4. | Hydrogen bonding |
Subtopic: α - Amino Acids, Peptide Bond, Proteins & Structure |
53%
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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 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 |
From NCERT
NEET - 2023
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Among the given amino acids, Lysine ; Methionine; Glutamic acid; Threonine; Arginine; Cysteine; Tyrosine; Isoleucine, the total number of \(\alpha\)-amino acids containing sulphur is:
1. 5
2. 1
3. 2
4. 6
1. 5
2. 1
3. 2
4. 6
Subtopic: α - Amino Acids, Peptide Bond, Proteins & Structure |
78%
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| Assertion (A): | Maltose is a reducing sugar. |
| Reason (R): | A free aldehyde group can be produced at C1 of one of the two glucose moieties in the solution of maltose. |
| 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: Polysaccharides & their Importance |
81%
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Complete hydrolysis of RNA gives:
| 1. | \(\beta\)-D-Ribose and phosphoric acid only |
| 2. | \(\beta\)-D-2-Deoxyribose and phosphoric acid only |
| 3. | \(\beta\)-D-Ribose, phosphoric acid, and nitrogen-containing heterocyclic compounds |
| 4. | \(\beta\)-D-2-Deoxyribose and nitrogen-containing heterocyclic compounds only |
Subtopic: DNA, RNA & Metal Ions |
88%
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Subtopic: Vitamins, Hormones & Enzymes |
84%
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Match List I with List II:
Select the correct options:
1. i ‐ A, ii ‐ B, iii ‐ C, iv ‐ D
2. i ‐ B, ii ‐ A, iii ‐ C, iv ‐ D
3. i ‐ C, ii ‐ D, iii ‐ A, iv ‐ B
4. i ‐ D, ii ‐ A, iii ‐ B, iv ‐ C
| List I (Vitamins) |
List II (Deficiency Diseases) |
||
| i. | Vitamin B12 | a. | Beri Beri |
| ii. | Vitamin B1 | b. | Cheilosis |
| iii. | Vitamin B2 | c. | Convulsions |
| iv. | Vitamin B6 | d. | Pernicious anemia |
1. i ‐ A, ii ‐ B, iii ‐ C, iv ‐ D
2. i ‐ B, ii ‐ A, iii ‐ C, iv ‐ D
3. i ‐ C, ii ‐ D, iii ‐ A, iv ‐ B
4. i ‐ D, ii ‐ A, iii ‐ B, iv ‐ C
Subtopic: Vitamins, Hormones & Enzymes |
89%
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In DNA, the linkages between different nitrogenous bases are:
1. Phosphate linkages
2. H-bonding
3. Glycosidic linkages
4. Peptide linkages
1. Phosphate linkages
2. H-bonding
3. Glycosidic linkages
4. Peptide linkages
Subtopic: DNA, RNA & Metal Ions |
70%
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NEET - 2013
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