PROKARYOTE CELLS The simplest of the cells, and also the first types of cells to evolve about 4.5 billion years ago, are the prokaryote cells, cells that lack a membrane. The bacteria are the best know example of prokaryote cells, but recently a new type of prokaryote cell was discovered called archea. Prokaryotic cells were the only form of life on earth for about 2 billion years. Fossils of prokaryotes were found in Western Australia and South …showed first 75 words of 1359 total…

…showed last 75 words of 1359 total…industry. Prokaryotes are used to make antibiotics and vaccines for immunization against infectious disease. The vaccines for illnesses such as whooping cough, dipheria, typhoid and cholera are made from the respective prokaryotes. As a result of our studies of prokaryotes we have made major advancements in heath of humans, animals and the environment. Prokaryotes are very useful and make up the major part of our environment for this we should study and research them continually.