Cell membranes of archaebacteria can withstand higher temperatures because their membrane lipids have

Options

A. ester bonds
B. hydrogen bonds
C. ether bonds
D. low molecular weight

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks why the cell membranes of archaebacteria can withstand higher temperatures. This relates to the structure of their membrane lipids.

2. **Identifying the Options**: The options provided are:
- A) H-turbones
- B) Hydrogen bonds
- C) Ether bonds
- D) Low molecular weight

3. **Analyzing the Options**:
- **H-turbones**: This term is not commonly associated with membrane lipids and does not provide a clear explanation for temperature resistance.
- **Hydrogen bonds**: While hydrogen bonds are present in many biological molecules, they are not the primary reason for the stability of archaebacterial membranes at high temperatures.
- **Ether bonds**: Archaebacteria have unique lipids that contain ether bonds, which are more stable than the ester bonds found in the membranes of other organisms. This stability is crucial for withstanding extreme temperatures.
- **Low molecular weight**: This option does not directly relate to the stability of membranes at high temperatures.

4. **Determining the Correct Answer**: Given the analysis, the correct answer is **C) Ether bonds**. Ether bonds in the membrane lipids of archaebacteria contribute to their ability to withstand high temperatures due to their stability compared to other types of bonds.

5. **Conclusion**: The cell membranes of archaebacteria can withstand higher temperatures because their membrane lipids have ether bonds.

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