Cells–Fundamental Units Of Life

Cells are basic units of structure and function for all living organisms and the structural order in cells forms the basis for properties of life including interaction with environment, movement, energy processing, growth, reproduction and evolution. Some organisms such as amoebas and most bacteria are single cells while plants and animals are multi cellular. Humans have an estimated 100 trillion cells and each cell can carry out specialized functions with its own set of instructions stored within the cell for carrying out various activities. There are two types of cells: eukaryotic and prokaryotic. Prokaryotic cells are usually independent, while eukaryotic cells are usually found in multicellular organisms. Prokaryotes are distinguished from eukaryotes on the basis of nuclear organization, specifically their lack of a nuclear membrane. Nucleus which houses the cell’s chromosomes and is the place where almost all DNA replication and RNA synthesis occur, gives the eukaryote its name, which means "true nucleus". For more information about 'Cells' visit our web site wonderwhizkids/Biology/Cells