Synthetic biopolymer , PHBV is made up to the following monomers ,

Options

A. 3-hydroxybutanoic acid +3-hydroxypentanoic acid
B. 2-hydroxybutaoic acid +2-hydoxypropanoic acid
C. 3-chlorobutanoic acid +3-chloropentanoic acid
D. 2-chlorobutanoic acid +3-methylpentanoic acid.

Explanation

To determine the monomers that make up the synthetic biopolymer PHBV (Poly(3-hydroxybutyrate-co-3-hydroxyvalerate)), we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Structure of PHBV**:
- PHBV is a copolymer, which means it is formed from two different monomers.

2. **Identify the Monomers**:
- The question provides four options for the monomers that could make up PHBV. We need to analyze each option to find the correct pair.
- The correct monomers for PHBV are known to be 3-hydroxybutanoic acid and 3-hydroxyvaleric acid.

3. **Review the Options**:
- **Option 1**: 3-hydroxybutanoic acid + 3-hydroxypentanoic acid
- **Option 2**: 2-hydroxybutanoic acid + 2-hydroxypropanoic acid
- **Option 3**: 3-chlorobutanoic acid + 3-chloropentanoic acid
- **Option 4**: 2-chlorobutanoic acid + 3-methylpentanoic acid

4. **Analyze Each Option**:
- **Option 1**: 3-hydroxybutanoic acid is indeed one of the monomers. 3-hydroxypentanoic acid is another name for 3-hydroxyvaleric acid, which is the second monomer. This option is correct.
- **Option 2**: The acids listed here do not correspond to the known monomers for PHBV.
- **Option 3**: The presence of chlorine in these acids indicates they are not the correct monomers for PHBV.
- **Option 4**: Similar to option 3, the presence of chlorine and the structure does not match the known monomers for PHBV.

5. **Conclusion**:
- After analyzing all options, we conclude that **Option 1** (3-hydroxybutanoic acid + 3-hydroxypentanoic acid) is the correct answer.

### Final Answer:
The monomers that make up the synthetic biopolymer PHBV are **3-hydroxybutanoic acid and 3-hydroxypentanoic acid**.

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