BUNDLED MMBio 221 Exam Guide Questions with Correct Answers Graded A 2024

Coliform - rapidly ferment lactose, are part of normal microbiota, may be opportunistic, aerobic or facultatively anaerobic. Found in soil and plants. Presence in water= impure water and poor sewage treatment 3 types of antigens used to serotype enteric bacteria - O-outer membrane K- capsular an...

Disinfection - destruction of vegetative pathogens; usually on inanimate objects. Antiseptic - agent which prevents bact. contamination and growth; usually on living tissue. Which agent doesn't necessarily work better at higher concentrations? - Alcohol, 70% (goldie lock zone)(60-80% most eff...

Fungi - cell wall made of chitin; Eukaryote Algae - cell wall made of silicates, eukaryotic Protozoa - Eukaryote Bacteria - Prokaryotic Virus - Acellular; only reproduce if they are inside of a living cell What allows a substance to cross a membrane - Protiens Substances that will ...

Obligate halophiles - High osmotic pressure aka lots of salt like the great salt lake Facultative halophiles - Type that causes acne can be in salty also known as osmolaric but not nessesary Neutrophiles - Most bacteria Protozoa and pathogens like neutral ph rang 6.5-7.5 Acidophiles - Reall...

Virulence: mycolic acid in cell wall causes slow growth, protection from lysis once bacteria are phagocytized, capacity for intracellular growth, resistance to Gram-staining, detergents, many antimicrobial drugs, and dessication - Mycobacterium Tuberculosis Unique properties: grows very slowly, c...

Which of the following microorganisms are not eukaryotic? - Bacteria....yeasts, molds, protozoa are eukaryotic Which microorganisms are used to make microbiological growth media? - Algae In which habitat would you most likely find archaea? - Acidic hot springs, swamp mud, Great Salt Lake Of...