Nutrition, is the process by which cells obtain food molecules to support their other activities, Digestion, is the process by which food particles are broken down into smaller soluble units suitable for cell use with the help of enzymes., Absorption, is the process by which cells absorb water, minerals and other materials essential to life from their environment., Biosynthesis, is the process by which all cells organize complex chemicals from simple building units or substances, Excretion, is the process by which by-products of all cell activities which are not needed for further cell functioning are eliminated., Egestion, is the process by which insoluble, non-digested particles are eliminated by the cell., Secretion, is the process by which substances that are synthesized by the cells are expelled from the membrane. This elimination process helps in the functioning of the body., Movement, is a process which includes the locomotion of cell by means of special structures like cilia or flagella, Irritability, is the process by which cells respond or react to external factors or conditions around them. Cells can alter their functions in response to changes their environment., Respiration, is the process of breaking down food molecules into chemical energy needed by all cells in order to function, Reproduction, is a process by which a cell copies or replicates its DNA and increases its number by cell division. It gives rise to new cells as a result, organisms grow.

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