Cells, and its Function
Functions of cells In order for a cell to survive it must be able to carry out a variety of functions. such as growth, respiration, reproduction, excretion, sensitivity/sensation,movement and nutrition. Growth:- Cells have the ability to grow until they are mature and ready to reproduce.A cell can grow and repair itself by manufacturing protein. Respiration:- Every cell requires oxygen for the process of respiration. Oxygen is absorbed through the cell’s semipermeable membrane and is used to oxidise nutrient material to provide heat and energy. The waste products of cell respiration include carbon dioxide and water. These are passed out from the cell through its semipermeable membrane. Reproduction:- When growth is complete in a cell, reproduction takes place. The cells of the human body reproduce Or divide by the process of mitosis. Excretion:- During metabolism, various substances are produced which are of no further use to the cell and can be damaging. These waste products ar...