H s 350 exam 4 stuvia - Study guides, Class notes & Summaries

Which population should be most concerned about toxoplasmosis infection? - Answer pregnant women With pinworm infection, when is itching most likely to occur and why? - Answer -Itching around the anus and is most likely to occur at night because the worms move to the area around the anus to lay their eggs. Head to head contact is necessary to spread lice T/F - Answer False What is most common waterborne disease in U.S.? - Answer -Swimmers ear (otitis externa) What disease is more com...

three classes of bacteria - Answer bacillus coccus spiral bacillus - Answer rod-shaped example of bacillus - Answer e coli coccus - Answer irregular clusters example of coccus - Answer staph infection spiral - Answer curved, rod like example of spiral - Answer cholera bacteria size - Answer much larger than a virus, but smaller than a red blood cell bacteria cellular organization - Answer cell wall made of peptidoglycan no nucleus, DNA free in cytoplasm reproducti...

Prokaryotes - Answer BACTERIA - Have cell wall, no nucleus, DNA free floating in cytoplasm, most can reproduce outside host cell. How are bacteria classified? - Answer Bacteria are classified by shape and gram stain 3 shapes of bacteria - Answer bacilli (rods) cocci (balls) spirochetes (squiggles) Gram-Positive - Answer purple color thick/multilayered nonresistant to antibiotics no outer membrane Gram-Negative - Answer pink/red color thin/single layered more resistant to antib...