CP-FS Exam Questions Correctly
Solved New Update (A+ Pass)
Anisakis - Answers -✔✔ roundworm common in sushi; salmon, cod, squid, cuttlefish,
octopus; cooking/freezing inactivates; onset 1-2 weeks
Cyclospora cayetanensis - Answers -✔✔ parasite; assoc. with fresh produce; rare in
US, common in areas around the tropics; explosive watery diarrhea, loss of appetite,
bloating; onset 1 week
Cryptosporidium parvus - Answers -✔✔ parasite; large amounts of severe, watery
diarrhea; onset 1 week
Entamoeba hystolytica - Answers -✔✔ Amebiasis; not common in US; poor hygienic
practices, contaminated water on fruits and vegetables; range from no symptoms to
dysentery; may last for years; onset 2-4 weeks
Giardia lamblia - Answers -✔✔ parasite; contaminated food or water; not killed by
common chlorine mixtures; onset 1-2 weeks
Nematodes - Answers -✔✔ roundworms; undercooked meats, esp. wild game such as
bear and boar, domestic pigs; travel from bowel throughout body; die in organs, causing
inflammation; onset 2-28 days
Tapeworms - Answers -✔✔ Taenia solium (pork), Taenia saginata (beef); undercooked
pork or beef; hunger pains, severe wait loss, insomnia; onset 2 months to develop to full
size
thermophilic - Answers -✔✔ high temperatures, 113 to 252F
psychophilic - Answers -✔✔ capable of growth and reprod. at low temps 5-50F
mesaphilic - Answers -✔✔ moderate temps 68-113F
psychotrophic - Answers -✔✔ grow well at refrigeration temps 30-50F
thermoduric - Answers -✔✔ heat resistant and can survive cooking temps as well as
pasteurization
lag phase - Answers -✔✔ initial growth, cell # remains constant prior to rapid growth,
longest of 4 phases; cells replicating various proteins and DNA to prep to grow (may be
sev days to hours depend on bact)
, log phase - Answers -✔✔ steepest slope, double pop every 20-30 min., "logarithmic"
phase
stationary phase - Answers -✔✔ plateau of growth curve, new cells at same rate cells
die, resources being used, state of equilibrium
death phase - Answers -✔✔ final phase, dead outnumber new cells, limited resources,
waste production, other changes to environment; colony starts over at first phase
pH - Answers -✔✔ 4.6-7.5
water activity - Answers -✔✔ the measure of the energy status of the water in a
system; microbial cells compete with solute molecules for free water molecules (molds
better competitors than bac, excluding staph aureus), 0.85; varies little with temp
spore formers - Answers -✔✔ B. cereus, C. bot, C. perfringens
toxin formers in food - Answers -✔✔ B cereus, C bot, Staph aureus
enterotoxin - Answers -✔✔ harmful substance prod. by staph aureus, b cereus, ETEC,
dangerous to GI tract
Bacillus cereus - Answers -✔✔ spore former; underreported due to mild symptoms;
causes 2 kinds of illness: toxin in small intestine (toxin mediated) or toxin in cont. food
(rice, starchy foods); watery diarrhea, cramps, nausea, vomiting (emetic); onset 6-15
hours (diarrheal); 30-6 hours (emetic)
Clostridium botulinum - Answers -✔✔ anaerobic, gram-positive spore former, potent
neurotoxin; blurry vision, trouble swallowing, speaking and breathing; onset 18-36 hours
Staphylococcus aureus - Answers -✔✔ gram-pos, small spherical bac, 50-70% of
people carry it on skin, in upper respiratory tract or in cuts/lesions; several species
produce highly heat stable enterotoxin; foods that have a lot of handling; nausea,
stomach cramps, vomit/diarr; onset 1-7 hours
Campylobacter jejuni - Answers -✔✔ Est. 3rd leading cause of FBI in US; raw poultry,
unpast milk and cheeses, contaminated water; microaerophilic (grow at lower than
atmospheric oxygen levels, 3-5%); watery bloody diarrhea, onset 2-5 days, lasts 7-10
days)
Clostridium perfringens - Answers -✔✔ anaerobic (aerotolerant) gram pos, spore
forming rod, produces enterotoxin, spores heat resistant; assoc with spices, improperly
cooled meat and gravy dishes, meat and meat products; 2nd leading bac FBI in US;
toxin mediated, onset 8-22 hours, lasts 24 hours, severe diarrhea and cramps
