Practice question
Question
A bacterium possesses an outer loose sheath, a rigid layer that maintains shape and an innermost selectively permeable membrane that is structurally similar to a eukaryotic plasma membrane.
Which option correctly gives the order and collective role of these layers?
Explanation
The bacterial envelope consists of the outermost glycocalyx, followed by the cell wall and then the plasma membrane. Although the layers perform distinct functions, they operate together as a protective unit.
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