Q. No.The total number of chiral carbons/centers in \(\beta - D- \) ribose are:
1. Three
2. Four
3. Five
4. Two
1. Three
2. Four
3. Five
4. Two
Subtopic: DNA, RNA & Metal Ions |
63%
Level 2: 60%+
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Subtopic: DNA, RNA & Metal Ions |
90%
Level 1: 80%+
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Which of the following are obtained on complete hydrolysis of RNA?
| 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 |
89%
Level 1: 80%+
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The incorrect statement about nucleic acid is:
| 1. | It is responsible for heredity. |
| 2. | It is responsible for protein synthesis in a cell. |
| 3. | It is a constituent of the chromosome. |
| 4. | It is responsible for the transmission of chemical signals. |
Subtopic: DNA, RNA & Metal Ions |
78%
Level 2: 60%+
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The correct statement about RNA is :
| 1. | The helical structure of RNA is mostly single-stranded . |
| 2. | It has deoxyribose sugar. |
| 3. | It is the chemical basis of heredity. |
| 4. | It contains thymine (T) |
Subtopic: DNA, RNA & Metal Ions |
81%
Level 1: 80%+
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Subtopic: DNA, RNA & Metal Ions |
96%
Level 1: 80%+
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Subtopic: DNA, RNA & Metal Ions |
93%
Level 1: 80%+
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Carbon atoms of pentose sugars of nucleotides having phosphodiester linkage are:
1. 5' and 3'
2. 2' and 5'
3. 5' and 5'
4. '3 and 3'
Subtopic: DNA, RNA & Metal Ions |
92%
Level 1: 80%+
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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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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 |
68%
Level 2: 60%+
NEET - 2013
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