Microbiology, Module 5, Portage
Learning Questions and Answers |
Latest Version | 2025/2026 | Correct &
Verified
What part of the bacterial cell is targeted by penicillin?
✔✔ Cell wall
What term describes bacteria that grow in the presence of oxygen but can survive without it?
✔✔ Facultative anaerobes
What term refers to a microorganism that requires oxygen to survive?
✔✔ Obligate aerobe
What type of bacteria thrive in extremely salty environments?
✔✔ Halophiles
What is the name for bacteria that grow best at moderate temperatures?
✔✔ Mesophiles
1
,What type of medium contains nutrients that allow only certain bacteria to grow?
✔✔ Selective medium
What kind of medium allows differentiation between bacterial types based on metabolic activity?
✔✔ Differential medium
What is the purpose of a streak plate technique in microbiology?
✔✔ Isolate single colonies
What part of a bacterial growth curve represents rapid reproduction?
✔✔ Log phase
What stage of bacterial growth occurs when the rate of cell death equals cell division?
✔✔ Stationary phase
What is the term for the time it takes a bacterial population to double?
✔✔ Generation time
2
,What is a chemical substance produced by one microorganism that inhibits another?
✔✔ Antibiotic
What is the primary function of the bacterial capsule in infections?
✔✔ Prevent phagocytosis
What type of bacterial reproduction involves binary fission?
✔✔ Asexual reproduction
What structure do some bacteria use for movement?
✔✔ Flagella
What environmental condition is required by obligate anaerobes?
✔✔ Absence of oxygen
What is the term for the total number of live and dead cells in a culture?
✔✔ Total cell count
3
, What type of count only includes viable, living bacteria?
✔✔ Colony-forming unit (CFU)
What bacterial structure is responsible for adherence to surfaces?
✔✔ Fimbriae
What term describes bacteria that obtain energy from sunlight?
✔✔ Photoautotrophs
What kind of bacteria derive their energy from chemical compounds?
✔✔ Chemoautotrophs
What type of bacteria prefer cold environments to grow?
✔✔ Psychrophiles
What kind of sterilization uses high pressure and steam?
✔✔ Autoclaving
4
Learning Questions and Answers |
Latest Version | 2025/2026 | Correct &
Verified
What part of the bacterial cell is targeted by penicillin?
✔✔ Cell wall
What term describes bacteria that grow in the presence of oxygen but can survive without it?
✔✔ Facultative anaerobes
What term refers to a microorganism that requires oxygen to survive?
✔✔ Obligate aerobe
What type of bacteria thrive in extremely salty environments?
✔✔ Halophiles
What is the name for bacteria that grow best at moderate temperatures?
✔✔ Mesophiles
1
,What type of medium contains nutrients that allow only certain bacteria to grow?
✔✔ Selective medium
What kind of medium allows differentiation between bacterial types based on metabolic activity?
✔✔ Differential medium
What is the purpose of a streak plate technique in microbiology?
✔✔ Isolate single colonies
What part of a bacterial growth curve represents rapid reproduction?
✔✔ Log phase
What stage of bacterial growth occurs when the rate of cell death equals cell division?
✔✔ Stationary phase
What is the term for the time it takes a bacterial population to double?
✔✔ Generation time
2
,What is a chemical substance produced by one microorganism that inhibits another?
✔✔ Antibiotic
What is the primary function of the bacterial capsule in infections?
✔✔ Prevent phagocytosis
What type of bacterial reproduction involves binary fission?
✔✔ Asexual reproduction
What structure do some bacteria use for movement?
✔✔ Flagella
What environmental condition is required by obligate anaerobes?
✔✔ Absence of oxygen
What is the term for the total number of live and dead cells in a culture?
✔✔ Total cell count
3
, What type of count only includes viable, living bacteria?
✔✔ Colony-forming unit (CFU)
What bacterial structure is responsible for adherence to surfaces?
✔✔ Fimbriae
What term describes bacteria that obtain energy from sunlight?
✔✔ Photoautotrophs
What kind of bacteria derive their energy from chemical compounds?
✔✔ Chemoautotrophs
What type of bacteria prefer cold environments to grow?
✔✔ Psychrophiles
What kind of sterilization uses high pressure and steam?
✔✔ Autoclaving
4
