Class 12 Chemistry - Chapter Biomolecules NCERT Solutions | Write the important structural and funct
Write the important structural and functional differences between DNA and RNA.
The structural differences between DNA and RNA are as follows:
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DNA |
RNA |
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|
1. |
The sugar moiety in DNA molecules is β-D-2 deoxyribose. |
1. |
The sugar moiety in RNA molecules is β-D-ribose. |
|
2. |
DNA contains thymine (T). It does not contain uracil (U). |
2. |
RNA contains uracil (U). It does not contain thymine (T). |
|
3. |
The helical structure of DNA is double-stranded. |
3. |
The helical structure of RNA is single-stranded. |
The functional differences between DNA and RNA are as follows:
|
DNA |
RNA |
||
|
1 |
DNA is the chemical basis of heredity. |
1 |
RNA is not responsible for heredity. |
|
2 |
DNA molecules do not synthesise proteins, but transfer coded message for the synthesis of proteins in the cells. |
2 |
Proteins are synthesised by RNA molecules in the cells. |
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