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Q. No.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 |
Level 4: Below 35%
NEET - 2023
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Cheilosis occurs due to the deficiency of:
| 1. | Thiamine | 2. | Nicotinamide |
| 3. | Pyridoxamine | 4. | Riboflavin |
Subtopic: Vitamins, Hormones & Enzymes |
70%
Level 2: 60%+
NEET - 2023
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Subtopic: Carbohydrates - Classification & D-L configuration |
70%
Level 2: 60%+
NEET - 2022
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The incorrect statement about the denaturation of proteins is:
| 1. | It results due to change of temperature and pH. |
| 2. | It results in the loss of biological activity of proteins. |
| 3. | A protein is formed from amino acids linked by peptide bonds. |
| 4. | Uncoiling of the helical structure takes place. |
Subtopic: Denaturation of Proteins & Chemical Properties |
68%
Level 2: 60%+
NEET - 2022
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The RBC deficiency is a deficiency disease of:
| 1. | Vitamin B1 | 2. | Vitamin B2 |
| 3. | Vitamin B12 | 4. | Vitamin B6 |
Subtopic: Vitamins, Hormones & Enzymes |
87%
Level 1: 80%+
NEET - 2021
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Sucrose on hydrolysis gives:
1. -D-Glucose + -D-Glucose
2. -D-Glucose + -D-Fructose
3. -D-Fructose + -D-Fructose
4. -D-Glucose + -D-Fructose
Subtopic: Polysaccharides & their Importance |
86%
Level 1: 80%+
NEET - 2020
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Which of the following metal ions activates many enzymes participating in the oxidation of glucose to produce ATP and with Na it is also responsible for the transmission of nerve signals:
1. Copper
2. Calcium
3. Potassium
4. Iron
Subtopic: Vitamins, Hormones & Enzymes |
72%
Level 2: 60%+
NEET - 2020
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Subtopic: α - Amino Acids, Peptide Bond, Proteins & Structure |
86%
Level 1: 80%+
NEET - 2020
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The reaction of concentrated sulphuric acid with carbohydrates (C12H22O11) is an example of:
1. Dehydration
2. Oxidation
3. Reduction
4. Sulphonation
Subtopic: Polysaccharides & their Importance |
62%
Level 2: 60%+
NEET - 2020
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Deficiency of which vitamin causes osteomalacia ?
| 1. | Vitamin A | 2. | Vitamin D |
| 3. | Vitamin K | 4. | Vitamin E |
Subtopic: Vitamins, Hormones & Enzymes |
81%
Level 1: 80%+
NEET - 2020
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