Question

what does the membrane of a cell do? protect the nucleus of a cell separates a cells interior from its environment contains proteins of the cell

Explanation:

The cell membrane is a crucial structure. It is a semi - permeable barrier. Its main function is to separate the cell's interior (cytoplasm, organelles etc.) from the external environment. This separation is essential for maintaining the cell's internal environment (homeostasis).

• The nucleus is protected by the nuclear membrane, not the cell membrane.
• While the cell membrane does contain proteins (such as transport proteins, receptor proteins), its primary and most fundamental role is separation, not just containing proteins.

Answer:

separates a cell's interior from its environment