Question

Which of the following are characteristics of archaeal cell membranes that probably help them survive at very high temperatures?

Answer 1

Answer:

• Option-(B,C):

Ether-linked lipids, and Membrane mono-layers,

Explanation:

• Archaeal cell membrane:

The archaeal cell membrane is able to resist any severe environmental factors, as the cell is able to live in the most extreme conditions of temperature and are able to perform there various cellular function in such way just because of having a double protective structure in there cell wall or membrane. As the fatty acids present inside the membrane are in connection to the outer lipid molecules(lipids) present in the archaeal cell membrane.

Answer 2

Answer:

Ether-linked lipids

Explanation:

Most organisms found in the Archaea are found in extreme enviroments such as very high temperatures. They are generally called Thermophiles.

In order to survive high temperatures, their cell membrane membrane contains ether-linked lipids. This is because these lipids are Thermo-stable. and can not be easily degraded by the high temperatures.

They also have a limited permeability to proton even at high temperatures hence maintaining a viable proton motive force even at these extreme temperatures.