Question

Which structure of the cell controls what goes in and comes out of the cell?

Answer 1

In simple diffusion, small molecules without charges such as oxygen and carbon dioxide flow through a plasma membrane without assistance and without expending energy. Other substances such as proteins, glucose and charged particles called ions cannot pass through the selectively permeable membrane

Answer 2

The structure of a cell that controls what goes in and out of the cell is called the cell membrane.

• The bilayer lipid molecules that make up the cell membrane govern the flow of substances in and out of the cell.
• The cell membrane also distinguishes between the cell organelles inside the cell and the cell's external environment.
• Active or passive diffusion permits important substances to travel within and outside the cell across the cell membrane.
• It is aided by the presence of ionic gates in the cell membrane structure.
• The elimination of harmful substances from the cell is also aided by the cell membrane.

• In this way, the cell membrane plays an important role in regulating the flow of material into and out of the cell.