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Exam (elaborations)

Microbiology Exam IIII Part I with answers

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Microbiology Exam IIII Part I with answers

Institution
Microbiology Rio Salado
Module
Microbiology Rio Salado









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Institution
Microbiology Rio Salado
Module
Microbiology Rio Salado

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Uploaded on
July 16, 2025
Number of pages
7
Written in
2024/2025
Type
Exam (elaborations)
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Questions & answers

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Microbiology Exam IIII Part I with answers |! |! |! |! |! |!




What're Biofilms? - Correct answer ✔Result when organisms attach to a
|! |! |! |! |! |! |! |! |! |! |!




substrate by some form of extracellular matrix that binds them together in
|! |! |! |! |! |! |! |! |! |! |! |!




organized layers |!




Dominate structure in most natural environments on earth
|! |! |! |! |! |! |!




Quorum Sensing? - Correct answer ✔Communicate and cooperate in the
|! |! |! |! |! |! |! |! |! |!




formation and function of biofilms |! |! |! |!




Ignaz Semmelweis - Correct answer ✔Identified cause of childbed fever.
|! |! |! |! |! |! |! |! |! |!




Emphasized doctor cleanliness. |! |!




Puerpural Fever - Correct answer ✔Childbed Fever caused by S. Pyogenes
|! |! |! |! |! |! |! |! |! |! |!




contracted during child birth |! |! |!




Joseph Lister - Correct answer ✔Developed antiseptic surgical techniques
|! |! |! |! |! |! |! |!




Microbe Resistance? - Correct answer ✔High Resistance= Prions, Bacterial
|! |! |! |! |! |! |! |! |!




Endospores



Moderate Resistance= Pseudomonas, Tuberculosis, Staphylococcus a.,
|! |! |! |! |! |!




Protozoan Cysts |!

, Least Resistance= Vegetative Cells, Fungal Spores, Protozoan Trophozoites
|! |! |! |! |! |! |!




Moist Heat - Correct answer ✔Can use lower temperature and shorter
|! |! |! |! |! |! |! |! |! |! |!




exposure time due to penetration
|! |! |! |!




Dry Heat - Correct answer ✔Moderate to high temperatures needed. Cause
|! |! |! |! |! |! |! |! |! |! |!




dehydration and alters protein structure. |! |! |! |!




Thermal Death Time - Correct answer ✔Shortest length of time required to
|! |! |! |! |! |! |! |! |! |! |! |!




kill microbe
|!




Thermal Death Point - Correct answer ✔Lowest temperature required to kill
|! |! |! |! |! |! |! |! |! |! |!




all microbes
|!




Tyndallization - Correct answer ✔Intermittent sterilization for substances
|! |! |! |! |! |! |! |!




that cannot withstand autoclaving
|! |! |!




Microbiostatic - Correct answer ✔Slows growth of microbes, related to
|! |! |! |! |! |! |! |! |! |!




freezing.



Dessication - Correct answer ✔Gradual removal of water from cells, leads to
|! |! |! |! |! |! |! |! |! |! |! |!




metabolic inhibition |!

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