Question

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Answer 1

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More information:-

• A microorganism is defined as a living thing that is so small it must be viewed with a microscope. Some microorganisms like viruses are so small they can only be seen with special electron microscopes.

• Generally, microorganisms are broken into five categories

• Bacteria: Bacteria come in a variety of shapes (spheres, rods, or spirals) and are a diverse group of organisms. Many cause disease, such as some strains of E. coli, while others actually help support life, such as the bacteria inside our intestines.Common diseases caused by bacteria include Typhoid, Pneumonia, Sore throat, Tetanus, Diphtheria

• Algae: Algae can be single-celled or multicelled and only a very small number can cause disease.

• Fungi: Common diseases caused by fungi include athlete’s foot in humans and white nose syndrome in bats, but the type of fungi known as penicillium gives us the antibiotic Penicillin

• Protozoa: Most protozoa do not cause disease but there are a few that cause harm to humans, including Plasmodium (malaria) and Giardia.

• Viruses: They have DNA or RNA and infect a host like other parasites, viruses have no true cells and cannot reproduce on their own. Viruses cause AIDS, Infuenza, Common cold