Which of the following sequence is correct on the basis of increasing molecular weight?

Options

A. DNA,ATP,NADP,AMP
B. AMP,ATP,NADP,DNA
C. ATP,AMP,DNA,NADP
D. ATP,ADP,NADP,DNA

Answer

To determine the correct sequence of biomolecules based on increasing molecular weight, we need to analyze the molecular weights of the given options: DNA, ADP, NADPH, and AMP.

### Step-by-Step Solution:

1. **Identify the Molecular Weights**:
- **AMP (Adenosine Monophosphate)**: The molecular weight is approximately 347.22 g/mol.
- **ADP (Adenosine Diphosphate)**: The molecular weight is approximately 507.8 g/mol.
- **NADPH (Nicotinamide Adenine Dinucleotide Phosphate)**: The molecular weight is approximately 744.413 g/mol.
- **DNA (Deoxyribonucleic Acid)**: The molecular weight can vary significantly based on the length of the DNA molecule, but for human DNA, it is approximately 6.6 billion g/mol (3.3 x 10^9 base pairs, with an average of 650 g/mol per base pair).

2. **Arrange the Molecules by Increasing Molecular Weight**:
- Start with the lowest molecular weight: **AMP (347.22 g/mol)**
- Next is **ADP (507.8 g/mol)**
- Followed by **NADPH (744.413 g/mol)**
- Finally, **DNA** has the highest molecular weight.

3. **Final Sequence**:
- The correct order based on increasing molecular weight is:
- AMP < ADP < NADPH < DNA

4. **Select the Correct Option**:
- From the options provided, the sequence that matches our findings is:
- **Option B: AMP, ADP, NADPH, DNA**

### Conclusion:
The correct sequence based on increasing molecular weight is AMP < ADP < NADPH < DNA, which corresponds to **Option B**.