Academic session 2026-27, Chapter 10 in the current curriculum.
Welcome to the NCERT Solutions for Class 12 Chemistry - Chapter Biomolecules. This page offers a step-by-step solution to the specific question from Exercise 2, Question 24:
Write the important structural and functional differences between DNA and RNA.
. With detailed answers and explanations for each chapter, students can strengthen their understanding and prepare confidently for exams. Ideal for CBSE and other board students, this resource will simplify your study experience.Write the important structural and functional differences between DNA and RNA.
The structural differences between DNA and RNA are as follows:
|
DNA |
RNA |
||
|
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. |
The reaction between A and B is first order with respect to A and zero order with respect to B. Fill in the blanks in the following table:
| Experiment |
A/ mol L - 1 |
B/ mol L - 1 |
Initial rate/mol L - 1 min - 1 |
| I | 0.1 | 0.1 |
2.0 × 10 - 2 |
| II | -- | 0.2 |
4.0 × 10 - 2 |
| III | 0.4 | 0.4 | -- |
| IV | -- | 0.2 |
2.0 × 10 - 2 |
NCERT questions are designed to test your understanding of the concepts and theories discussed in the chapter. Here are some tips to help you answer NCERT questions effectively:
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Welcome to the NCERT Solutions for Class 12 Chemistry - Chapter . This page offers a step-by-step solution to the specific question from Excercise 2 , Question 24: Write the important structural and functional differences between DNA and RNA.....
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