Hi Irfan! Cells are the basic building blocks of all the living things (animals, plants, humans etc.) Cells have many different parts such as nucleus, cytoplasm, DNA (carries heredity information), endoplasmic reticulum, Golgi apparatus, ribosomes, cell wall (plants), etc. Cells are made up of carbohydrates, proteins, lipids and nucleic acids. There are mainly two types of cells: Eukryotic and prokryotic. Eukryotic cells contains nucleus and prokyotic do not. Prokyotes are single cell organisms and eukryotes can be single or multicell organisms.

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