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19 Cards in this Set
- Front
- Back
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What did Antony vonLeeuwenhoek do?
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He was the first to observe microorganisms under a microscope
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What did Louis Pasteur do?
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He discovered that attenuated microbes coud be used as vaccines
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What did Robert Koch do?
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He developed agar media for bacterial culture
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What did Francesco Redi do?
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He was the first to disprove spontaneous generation with open and closed dishes of meat
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What did Joseph Lister do?
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He introduced the practice of antisepsis during surgery
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What type of microscopy uses UV light instead of visible light?
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Fluorescent microscopy
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What is the disadvantage of observing a wet prep of cells under a microscope?
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It is difficult to observe cellular structure
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What is found ONLY in the cell wall of ACID FAST POSITIVE bacteria?
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Mycolic acid
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What are Koch's postulates?
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The criteria to prove that a disease is caused by a particular microorganism
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What occurs when bacterial flagella rotate in a CLOCKWISE direction?
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Tumbling motility
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What determines the size and shape of the bacterial cell?
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Cell wall
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What is a small molecule of DNA?
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Plasmid
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What are functions in attachment to host tissue?
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Pilus (pili)
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What protects bacteria from phagocytosis by white blood cells?
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Glycocalyx
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What category of bacteria that grow best at 37C belong to?
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Mesophiles
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What happens when a cell is put in a hypertonic solution?
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It loses water and shrivels
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What statement about bacterial spores is correct?
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They are resistant to heat and dry conditons
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What transport mechanism requires neither enerby nor a transport protein?
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Passive diffusion
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What mechanism modifies the molecule as it passes through the membrane?
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Group translocation
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