Which chemical characterstic is not common to all living beings?

Options

A. Types of protein present in the body
B. Similar triplet code for amino acids
C. Energy is stored in high phosphate bonds
D. None of the above

Answer

To determine which chemical characteristic is not common to all living beings, we need to analyze the given options carefully.

### Step-by-Step Solution:

1. **Understanding the Options**:
- **Option A**: Types of proteins present in the body.
- **Option B**: Similar triplet code for amino acids.
- **Option C**: Energy is stored in high phosphate bonds.
- **Option D**: None of the above.

2. **Analyzing Each Option**:
- **Option A**: Types of proteins present in the body can vary significantly among different organisms. For example, humans have specific proteins that may not be present in plants or bacteria. Therefore, this characteristic is not common to all living beings.
- **Option B**: The triplet code for amino acids (the genetic code) is universal among all living beings, meaning that the same codons specify the same amino acids across different species.
- **Option C**: The storage of energy in high phosphate bonds (like ATP) is a characteristic shared by all living organisms, as ATP is the primary energy carrier in cells.
- **Option D**: This option suggests that all previous statements are common, which is incorrect based on our analysis.

3. **Conclusion**:
- Based on the analysis, the correct answer is **Option A**: Types of proteins present in the body, as this characteristic varies among different living beings.

### Final Answer:
**Option A: Types of proteins present in the body.**

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