Question

This simple bacteria cell has the same structure as more complex cells. It controls what comes in to and leaves the cell and also maintains homeostasis. It is the
A) capsule.
B) cytoplasm.
C) membrane.
D) wall.

Answer 1

It is C, the cell membrane. The membrane is responsible for controlling what goes in and out of the cell by using diffusion and osmosis. The cell wall's purpose is to give shape to the cell, so the answer is C.

Answer 2

The right answer is C) membrane.

The cell is a logical entity: it is a compartmentalized compartment by a cell membrane (or cytoplasmic membrane) in which are grouped all the living molecules (organelles and nutrients). Without this membrane these biomolecules would be diluted in the surrounding environment.