Which cellular structure makes it possible for a cell to differ structurally and biochemically from its surroundings? select one: a. nucleolus b. nucleus c. plasma membrane d. cell wall e. endoplasmic reticulum?

The correct answer is - c. plasma membrane.

Plasma membrane( also called Cell membrane, made up of bilayer of phospholipids) is a membrane surrounding the cytoplasm of all cells and separates the internal environment of cell from its exterior environment.

It is a semipermeable membrane, which means that it allows the entry and exit of only specific molecules ( such as small uncharged molecules, small polar molecules like Oxygen and Carbon-dioxide, small uncharged polar molecules like water).

Also, it does not allow the toxic substances to enter the cell and at the same time the useful substances to leave the cell.

By doing this, it keeps the cell interior structurally and biochemically different from its surroundings.