Microbiology 2104 Mary
Miller Chapters 6 7 8 13
Exam Questions and
Complete Solutions
Graded A+
Denning [Date] [Course title]
, Psychotrophs - Answer: grow between 0 - 30 and cause food spoilage
Mesophiles - Answer: 10 - 48 degrees easily infect humans because they love our temperature
Psychrophiles - Answer: love cold -10 to 20 degrees
Thermophiles - Answer: like heat from 40 to 70
Hyperthermophiles - Answer: love extreme heat 65 to 110 degrees
Explain use of nitrogen - Answer: Protein synthesis, DNA RNA synthesis, nitrogen fixation ad taking N2
directly from atmosphere
Obligate Aerobes - Answer: require oxygen to live
facultative anaerobes - Answer: can live with or without oxygen, have greater growth in presence of
oxygen though
obligate anaerobes - Answer: Growth ceases in presence of oxygen found at bottom of test tube
Aerotolerant Aerobes - Answer: Prefer to be anaerobic but growth continues in presence of oxygen
Binary Fission - Answer: cell duplicates itself into two identical daughter cells
Budding - Answer: Small initial outgrow on original cell when it reaches the same size as parent cell then
it seperates.
Bacterial growth - Answer: an increase in the number of bacteria in a colony
Miller Chapters 6 7 8 13
Exam Questions and
Complete Solutions
Graded A+
Denning [Date] [Course title]
, Psychotrophs - Answer: grow between 0 - 30 and cause food spoilage
Mesophiles - Answer: 10 - 48 degrees easily infect humans because they love our temperature
Psychrophiles - Answer: love cold -10 to 20 degrees
Thermophiles - Answer: like heat from 40 to 70
Hyperthermophiles - Answer: love extreme heat 65 to 110 degrees
Explain use of nitrogen - Answer: Protein synthesis, DNA RNA synthesis, nitrogen fixation ad taking N2
directly from atmosphere
Obligate Aerobes - Answer: require oxygen to live
facultative anaerobes - Answer: can live with or without oxygen, have greater growth in presence of
oxygen though
obligate anaerobes - Answer: Growth ceases in presence of oxygen found at bottom of test tube
Aerotolerant Aerobes - Answer: Prefer to be anaerobic but growth continues in presence of oxygen
Binary Fission - Answer: cell duplicates itself into two identical daughter cells
Budding - Answer: Small initial outgrow on original cell when it reaches the same size as parent cell then
it seperates.
Bacterial growth - Answer: an increase in the number of bacteria in a colony
