Question

What is a plausible explanation for why bacteria lack ether-linked cell membranes? Select one:. a. They need chitin in the cell membranes.. b. They exchange fluids with the environment.. c. They do not live in the extreme environments.. d. They have peptidoglycan in their membranes..

Answer 1

Answer: The correct answer is- c. They do not live in the extreme environments.

Cell membrane ( also called plasma membrane) surrounds the cytoplasm of all cells and separates the internal environment of cell from its external environment. In bacteria, it is composed of phospholipids and many protein.

• Phopholipids are linked to ester in case of bacterial cell membrane whereas in archaebacteria, they are linked to ether ( that is they are linked to glycerol backbone).

The ether linkage in the cell membrane of Archaebacteria forms stable membranes that enable them to survive under harsh environmental conditions such as hot springs, boiling mud surrounding volcanoes,  salt lakes,

Bacteria do not live under such conditions. Thus, bacteria lack ether-linked cell membranes.

Answer 2

"They do not live in the extreme environments" is the one among the following choices that is a plausible explanation for why bacteria lack ether-linked cell membranes. The correct option among all the options that are given in the question is the third option or option "C". I hope it has helped you.