FSC 342 BUNDLED QUESTIONS ANSWERED CORRECTLY LATEST UPDATE 2025/2026
Bacillus cereus - Gram reaction - Answers Gram positive
Bacillus cereus - Spores? - Answers Yes, spore-forming
Bacillus cereus - Motility - Answers Motile rod
Bacillus cereus - Oxygen use - Answers Aerobic
Bacillus cereus - Growth temperature - Answers 10-50°C; some strains grow at 4°C
Bacillus cereus - pH range - Answers 4.9-9.3
Bacillus cereus - aw minimum - Answers 0.93
Bacillus cereus - Infectious dose - Answers Diarrheal: 10⁵-10⁷ cells; Emetic: preformed toxin
Bacillus cereus - Symptoms - Answers Vomiting (emetic) or diarrhea (diarrheal)
Bacillus cereus - Foods - Answers Fried rice, cooked rice, pasta, dairy
Clostridium perfringens - Gram reaction - Answers Gram positive
Clostridium perfringens - Spores? - Answers Yes
Clostridium perfringens - Oxygen - Answers Anaerobic
Clostridium perfringens - Growth temperature - Answers 43-45°C
Clostridium perfringens - Infectious dose - Answers 10⁶-10⁷ cells
Clostridium perfringens - Symptoms - Answers Watery diarrhea, cramps
Clostridium perfringens - Foods - Answers Meat, poultry, gravies
Clostridium botulinum - Gram reaction - Answers Gram positive
Clostridium botulinum - Spores? - Answers Yes, heat-resistant
Clostridium botulinum - Oxygen - Answers Strict anaerobe
Clostridium botulinum - pH limit - Answers No growth below pH 4.6
Clostridium botulinum - Symptoms - Answers Neurotoxic paralysis
Clostridium botulinum - Foods - Answers Canned foods, vacuum-packed fish, garlic-in-oil
Listeria monocytogenes - Gram reaction - Answers Gram positive rod
, Listeria monocytogenes - Temperature class - Answers Psychrotroph (grows in fridge)
Listeria monocytogenes - Symptoms - Answers Miscarriage, meningitis, sepsis
Listeria monocytogenes - Foods - Answers Deli meats, soft cheese, smoked fish
Staphylococcus aureus - Gram reaction - Answers Gram positive cocci
Staphylococcus aureus - Spores? - Answers No
Staphylococcus aureus - aw for toxin - Answers Toxin produced above aw 0.93
Staphylococcus aureus - Symptoms - Answers Rapid vomiting, nausea
Staphylococcus aureus - Foods - Answers Ham, pastries, cream foods
Salmonella - Gram reaction - Answers Gram negative rod
Salmonella - Infectious dose - Answers 10⁵-10⁷ (lower in high-fat foods)
Salmonella - Symptoms - Answers Diarrhea, fever, cramps
Salmonella - Foods - Answers Poultry, eggs, peanut butter, produce
Shigella - Gram reaction - Answers Gram negative
Shigella - Motility - Answers Non-motile
Shigella - Infectious dose - Answers Very low (10-100 cells)
Shigella - Symptoms - Answers Bloody diarrhea, fever
Shigella - Foods - Answers Salads, produce, water
E. coli O157:H7 - Gram reaction - Answers Gram negative rod
E. coli O157:H7 - Infectious dose - Answers 10-100 cells
E. coli O157:H7 - Symptoms - Answers Bloody diarrhea, HUS
E. coli O157:H7 - Foods - Answers Ground beef, leafy greens, raw milk
Yersinia enterocolitica - Gram reaction - Answers Gram negative rod
Yersinia enterocolitica - Temperature class - Answers Psychrotrophic
Yersinia enterocolitica - Symptoms - Answers Diarrhea, pseudoappendicitis
Yersinia enterocolitica - Foods - Answers Pork, chitterlings, milk
Bacillus cereus - Gram reaction - Answers Gram positive
Bacillus cereus - Spores? - Answers Yes, spore-forming
Bacillus cereus - Motility - Answers Motile rod
Bacillus cereus - Oxygen use - Answers Aerobic
Bacillus cereus - Growth temperature - Answers 10-50°C; some strains grow at 4°C
Bacillus cereus - pH range - Answers 4.9-9.3
Bacillus cereus - aw minimum - Answers 0.93
Bacillus cereus - Infectious dose - Answers Diarrheal: 10⁵-10⁷ cells; Emetic: preformed toxin
Bacillus cereus - Symptoms - Answers Vomiting (emetic) or diarrhea (diarrheal)
Bacillus cereus - Foods - Answers Fried rice, cooked rice, pasta, dairy
Clostridium perfringens - Gram reaction - Answers Gram positive
Clostridium perfringens - Spores? - Answers Yes
Clostridium perfringens - Oxygen - Answers Anaerobic
Clostridium perfringens - Growth temperature - Answers 43-45°C
Clostridium perfringens - Infectious dose - Answers 10⁶-10⁷ cells
Clostridium perfringens - Symptoms - Answers Watery diarrhea, cramps
Clostridium perfringens - Foods - Answers Meat, poultry, gravies
Clostridium botulinum - Gram reaction - Answers Gram positive
Clostridium botulinum - Spores? - Answers Yes, heat-resistant
Clostridium botulinum - Oxygen - Answers Strict anaerobe
Clostridium botulinum - pH limit - Answers No growth below pH 4.6
Clostridium botulinum - Symptoms - Answers Neurotoxic paralysis
Clostridium botulinum - Foods - Answers Canned foods, vacuum-packed fish, garlic-in-oil
Listeria monocytogenes - Gram reaction - Answers Gram positive rod
, Listeria monocytogenes - Temperature class - Answers Psychrotroph (grows in fridge)
Listeria monocytogenes - Symptoms - Answers Miscarriage, meningitis, sepsis
Listeria monocytogenes - Foods - Answers Deli meats, soft cheese, smoked fish
Staphylococcus aureus - Gram reaction - Answers Gram positive cocci
Staphylococcus aureus - Spores? - Answers No
Staphylococcus aureus - aw for toxin - Answers Toxin produced above aw 0.93
Staphylococcus aureus - Symptoms - Answers Rapid vomiting, nausea
Staphylococcus aureus - Foods - Answers Ham, pastries, cream foods
Salmonella - Gram reaction - Answers Gram negative rod
Salmonella - Infectious dose - Answers 10⁵-10⁷ (lower in high-fat foods)
Salmonella - Symptoms - Answers Diarrhea, fever, cramps
Salmonella - Foods - Answers Poultry, eggs, peanut butter, produce
Shigella - Gram reaction - Answers Gram negative
Shigella - Motility - Answers Non-motile
Shigella - Infectious dose - Answers Very low (10-100 cells)
Shigella - Symptoms - Answers Bloody diarrhea, fever
Shigella - Foods - Answers Salads, produce, water
E. coli O157:H7 - Gram reaction - Answers Gram negative rod
E. coli O157:H7 - Infectious dose - Answers 10-100 cells
E. coli O157:H7 - Symptoms - Answers Bloody diarrhea, HUS
E. coli O157:H7 - Foods - Answers Ground beef, leafy greens, raw milk
Yersinia enterocolitica - Gram reaction - Answers Gram negative rod
Yersinia enterocolitica - Temperature class - Answers Psychrotrophic
Yersinia enterocolitica - Symptoms - Answers Diarrhea, pseudoappendicitis
Yersinia enterocolitica - Foods - Answers Pork, chitterlings, milk
