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An inventor of the microscope. His microscopes were made of a single lens and could magnify from 270X-500X. He termed tiny organisms "animalcules" (beasties)
van Leeuwenhoek
Study of organisms too small to see by the unaided eye
Microbiology
Organisms considered to be microorganisms
1) Bacteria
2) Fungi
3) Virus
4) Protozoa
5) Algae
6) Archaea
7) Parasitic Worms
Unicellular or multicellular photosynthetic eurkaryotes
Algae
Groups of single-cell organisms that are prokaryotes. The cells of this group have a cell wall and are generally smaller than eukaryotes. An example of a member of this group is Staphylococcus aureus which is the most common nosocomial infection.
Bacteria
Group of organisms whose cells are eukaryotic and must obtain food from other organisms. They differ from animal cells because they have a cell wall. A representative of this group is brewer's and baker's yeast.
Fungi
Single-celled microorganisms that are similar to animal cells in nutritional needs and cellular structure. Most are capable of motion through use of pseudopodia, cilia, or flagella
Protozoa
Generic term for a group of organisms whose members are extremely small. Technically, this group is not alive. An example is Ebola.
Virus
Microorganism that causes disease in humans
Pathogen
Term for the origin of life that states that new organisms come from parental organisms.
Biogenesis
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