Microorganism is small animals with micro size, micro is same as 1 m divide by 1 million or 1/1000000 m. Animals include on this category such as viruses, bacteria fungi and animals and plant in single cell structure.
Animals in micro structure have different metabolism system with normal creature, on microorganism all the metabolism system are in micro so they don't have any organ like us. Bacteria don't have mouth, don't have hands and don't have blood like us.
The study of bacteria is called bacteriology, which belongs to the broader is called bacteriology, or the study of all types of microorganisms, including one celled protozoans, yeast, and algae. Medical microbiology is concerned with the behavior and control of pathogens, which are microorganisms that cause infections Diseases in humans and others animals.
