Question

Cell membranes contain branched chain lipids in

• A. Actinomycetes
• B. Spirochaetes
• C. Eubacteria
• D. Archaebacteria

Answer 1

The correct option is D Archaebacteria

The cell membrane of bacteria is a lipid bilayer. However, the phospholipids of archaebacteria are different from other bacteria in various ways. It is composed of glycerol-ether lipids instead of glycerol-ester lipids. Also, cell membranes of archaebacteria contain branched chain lipids. Whereas, the cell membranes of other bacteria is made up of straight chains without side branches or rings. The branched chains of Archaebacteria help prevent cell membranes from leaking at high temperatures.

Thus, the correct answer is 'Archaebacteria.'