What is Microbiology? {Ans: } The study of microscopic organismsMajor group of microorganisms {Ans: } Bacteria, Viruses, protozoa, helminths, and fungi. All these are cellular organisms except for the Viruses.Viruses {Ans: } Cause harm to the host cell they infect.Medical Microbiology {Ans: } this branch deals with microbes that cause diseases in humans and animals. researchers examine factors that make the microbes virulent and mechanisms for inhibiting themPublic Health Microbiology and Epidemiology {Ans: } These branches monitor and control the spread of diseases in communitiesImmunology {Ans: } This branch studies the complex web of protective substances and cells produced in response to infection.Industrial Microbiology {Ans: } This branch safeguards our food and water, and also includes biotechnology, the use of microbial metabolism to arrive at a desired product, ranging from bread making to gene therapy. microbes can be used to create large quantities of substances such as amino acids, beer, drugs, enzymes, and vitaminsAgricultural Microbiology {Ans: } This branch is concerned with the relationship between microbes and domesticated plants and animalsEnvironmental Microbiology {Ans: } branch of microbiology studying the role of microorganisms in soils, water, and other habitatsLUCA {Ans: } Last Universal Common Ancestor. The shared ancestor that multiple organisms