Cell Membrane Definition Class 8
The cell membrane also known as the plasma membrane PM or cytoplasmic membrane and historically referred to as the plasmalemma is a biological membrane that separates the interior of all cells from the outside environment the extracellular space which protects the cell from its environment.
Cell membrane definition class 8. This membrane is living thin and delicate. 1In animal cells nucleus lies in the centre of the cell whereas in plant cells the nucleus may be on the periphery of the cell. T he cell membrane is a semi-permeable.
It is however absent in animal cells. The cell membrane regulates which molecules pass through the cell and which molecules cant pass through the cell. The cell membrane consists of a lipid bilayer including cholesterols a lipid.
MSE Chandigarh 2007 Answer. Question 1 is the outermost layer of an animal cell. Ii It is living part of the cell thin delicate and elastic.
D A tissue and an. This helps the cells to aggregate and defend themselves against microbes. The cytoplasm and nucleus are enclosed within the cell membrane also called the plasma membrane.
It is the outermost covering of animal cells. The cell membrane also receives messages from. B controls only the entry of materials into cells.
Download revision notes for Cell-Structure and Functions class 8 Notes and score high in exams. Cell membrane is made up of lipids and proteins. The outer boundary of cell enclosing nucleus and cytoplasm is called cell membrane or plasma membrane.
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