Question

Which of the following correctly describes differences between bacteria and Archaea? Select all that apply.

a) bacterial phospholipids are straight chained, (most) archaeal phospholipids are branched chains
b) bacteria have bi-layer membranes, while (most) archaea have mono-layer membranes.
c) 000 bacteria are prokaryotes, archaea are not
d) bacteria have a phospholipid bi-layer membrane with ether linkages, archaea have a phospholipid bi-layer with ether linkages

Answer 1

Bacteria and Archaea are different in that bacterial phospholipids have straight chains and ester linkages, while archaeal phospholipids have branched chains and ether linkages. Some archaea have mono-layer membranes versus the typical bi-layer found in bacteria, and their cellular components like cell walls and membrane lipids have different chemical compositions.

Step-by-step explanation:

The correct differences between bacteria and Archaea include variations in membrane structure and lipid composition.

It is essential to understand that while both bacteria and Archaea share some basic structural similarities, they differ in the chemical makeup of these structures, reflecting their separate evolutionary paths.

For example, cell walls in bacteria are composed of peptidoglycan, whereas archaea generally do not contain peptidoglycan, and their membrane lipids are made from phytanyl groups instead of the fatty acids found in bacteria.