All versions of exam 4 categorized by question types 2024-2025 BIOD 171 Microbiology Portage
learning division Geneva college
Question type breakdown
True and false:
Matching, fill in the blank, multiple choice and short answer: *refer to answer key for short answer
questions, however, examinees are strongly encouraged to answer them in their own words.
Good luck!
True and false
Differential media is best suited for distinguishing between two similar species of bacteria. True
Growth media is best suited for distinguishing between two similar species of bacteria. False
Chocolate (cocoa) is not a component of Chocolate agar plates. True
Chocolate agar gets its brown color from cocoa to produce enriched media. False
The purpose of a quadrant streak is to expand a bacterial population. False
The purpose of a quadrant streak is to produce individual colonies of a bacterial population. True
When performing a dilution streak a new (or sterilized) loop must be used for each phase. True
When performing a dilution streak a new (or sterilized) loop is not required for each phase as long as the
bacterial culture is pure. False
To restrict the growth of a pathogenic microbe a researcher might decrease an incubator from 37°C to
25°C. True
Pathogenic strains of bacteria tend to grow slower than normal non-pathogenic bacterial strains. False
The visualization of colonies on a petri dish represents bacterial cells that have multiplied ~2-3 times.
False
The visualization of colonies on a petri dish represents bacterial cells that have often multiplied a million
times over. True
learning division Geneva college
Question type breakdown
True and false:
Matching, fill in the blank, multiple choice and short answer: *refer to answer key for short answer
questions, however, examinees are strongly encouraged to answer them in their own words.
Good luck!
True and false
Differential media is best suited for distinguishing between two similar species of bacteria. True
Growth media is best suited for distinguishing between two similar species of bacteria. False
Chocolate (cocoa) is not a component of Chocolate agar plates. True
Chocolate agar gets its brown color from cocoa to produce enriched media. False
The purpose of a quadrant streak is to expand a bacterial population. False
The purpose of a quadrant streak is to produce individual colonies of a bacterial population. True
When performing a dilution streak a new (or sterilized) loop must be used for each phase. True
When performing a dilution streak a new (or sterilized) loop is not required for each phase as long as the
bacterial culture is pure. False
To restrict the growth of a pathogenic microbe a researcher might decrease an incubator from 37°C to
25°C. True
Pathogenic strains of bacteria tend to grow slower than normal non-pathogenic bacterial strains. False
The visualization of colonies on a petri dish represents bacterial cells that have multiplied ~2-3 times.
False
The visualization of colonies on a petri dish represents bacterial cells that have often multiplied a million
times over. True
