Arrange the following compounds in ascending order based on the number of carbons in them. I Erythrose II Sedopheptulose III DHAP IV Xylulose

Options

A. III-I-IV-II
B. II-IV-I-III
C. IV-II-III-I
D. III-IV-I-II

Answer

To arrange the compounds Erythrose, Sedoheptulose, DHAP, and Xylulose in ascending order based on the number of carbon atoms, we will first identify the number of carbon atoms in each compound:

1. **Erythrose**: This is a four-carbon sugar (C4).
2. **Sedoheptulose**: The name indicates that it has seven carbon atoms (C7).
3. **DHAP (Dihydroxyacetone phosphate)**: This is a three-carbon molecule (C3).
4. **Xylulose**: This is a five-carbon sugar (C5).

Now, let's list the compounds with their respective number of carbons:

- DHAP: 3 carbons
- Erythrose: 4 carbons
- Xylulose: 5 carbons
- Sedoheptulose: 7 carbons

Next, we will arrange these compounds in ascending order based on the number of carbon atoms:

1. DHAP (3 carbons)
2. Erythrose (4 carbons)
3. Xylulose (5 carbons)
4. Sedoheptulose (7 carbons)

Thus, the final ascending order based on the number of carbon atoms is:

**DHAP < Erythrose < Xylulose < Sedoheptulose**