Cell Membrane Definition Class 8

A cell membrane is a fluid flexible barrier on the outside of a cell that protects it.

Cell membrane definition class 8. Definition It is the outer covering or boundary of cells Other Name It is also known as Plasma Membrane Characteristics It is porousallow liquid to pass through Functions It separates one cell from other cell So it helps movement of substances both. The revision notes help you revise the whole chapter 8 in minutes. The cell membrane consists of a lipid bilayer including cholesterols a lipid.

It contains raw materials and provides the same to cell organelles for their functioning. This helps the cells to aggregate and defend themselves against microbes. 85 Parts of the Cell Cell Membrane The basic components of a cell are cell membrane cytoplasm and nucleus Fig.

Cell wall is a hard and rigid covering of plasma membrane and found in plant cells only. The membrane separates cells from one another and also the cell from the surrounding medium. MSE Chandigarh 2006 Answer.

Its function is to provide a mechanical barrier for the protection of the inner cell contents and to regulate the movement of molecules in and out of the cell. The cell membrane regulates which molecules pass through the cell and which molecules cant pass through the cell. The basic components of a cell are cell membrane cytoplasm and nucleus.

B Leucoplast and chloroplast. 3It can be stained and seen easily with the help of a microscope. The outer boundary of cell enclosing nucleus and cytoplasm is called cell membrane or plasma membrane.

Parts Of the Cell. Cell membrane also protects the cell from injury. What is the name given to the green plastids.