BIOL. 4220 Spring 201Exam 1 (100 pts tl) NamesChishm lasn Louis Pasteur used ser
ID: 192277 • Letter: B
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BIOL. 4220 Spring 201Exam 1 (100 pts tl) NamesChishm lasn Louis Pasteur used serial dilutions to A) trap microorganiums from the air in the neck of the f B) C) allow dust to reach sterile atrient beoth D) hopefully isolae pure oaltures E) keep fies away from decaying me 2.-_ Ignaz Semmelweis was instrumental in desermining Disease would be supported had "be end and b Set C) a role hand washing D) morgues had to be removed from hospitals E) responses A and C ONLY 3) that viruses are Eherable C) that solid modia is needed to obtain pure cultures D) a cause and effect relationship between a causative age E) none of the above and Which of the following would NOT be fonund in BOTH prokaryokic and eukaryoic ells A) minochondria E) chromosomal DNA 5 Bacterial capsules give the cell A) peotection from predaiors B) the ability to atac C) frequently, the ability to cause D) A, B, and C only E) none of the above h to some surface Pili are small proteins that extend from some hacterial surfaces g giving those cells A) Eukaryotic-like flagelia B) a potential vinulence factor linked to the cell's endospore C) a potential virulence factor linked to attachment D) an ability to resist UV radiation E) none of the above 7-·Lipopolysaccharide is a omponent of-serving as a-in-dieases B) Gram positive cells . target for antibiotics C) Gram negative cells . trsport protein D) cell wall outer membrane in some bactcria..oin E) the cell wall peptidoglycan layer virulence factor 8. Peptidoglycan in Gram negative cells differs from that in Gram positive cells (e-g.Staplylococcus) by lacking A) cross bridges B) porins C) NAM subunits E) any cross linksExplanation / Answer
1. D) hopefully isolate pure culture.
2. C) a role for hand washing.
3. D) a cause and effect relationship between a causative agent and an infectious disease.
4. A) mitochondria.
5. D) A, B, and C only.
6. C) a potential virulence factor linked to attachment.
7. D) cell wall outer membrane in some bacteria, toxin.
8. A) cross bridges.
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