Microbiology UTA 2460 - Lab Practical 2
Correctly Answered Questions | UpToDate |
Already Graded A+
What is the role of resazurin in fluid thioglycolate medium...
🗸🗸🗸: Resazurin indicates the presence of oxygen in the media
A bacterial isolate is subcultured to two blood agar plates, one of which is incubated in an
anaerobe jar, and the other is incubated on a shelf in the incubator. After incubation, growth is
observed on the plate from the anaerobe jar, but there is not growth on the plate incubated on the
incubator shelf. Based on these results how would this organism be categorized...
🗸🗸🗸: obligate anaerobe
Where would you predict an facultative anaerobe would grow in a tube of fluid thioglycolate
medium...
🗸🗸🗸: throughout the tube
The pink color in the top of the broth in an FTM tube indicates...
🗸🗸🗸: the presence of oxygen
Both human pathogens and normal microbiota are typically classified as...
🗸🗸🗸: mesophiles
1|Page
, Taq polymersae is a DNA polymerase enzyme that demonstrates maximal activity at 72C. The
organism from which this enzyme was isolated would most likely be classified as a...
🗸🗸🗸: thermophile
Vibrio cholerae is the bacterium responsible for cholera, a GI tract infection. Normally, it takes
the ingestion of over one million bacterial cells to cause infection, but the consumption of
antacids significantly lowers this number. What does this tell you about the likely classification
of V. cholerae in terms of pH preference...
🗸🗸🗸: it is likely an alkaliphile
How does pH negatively affect the metabolism of microorganisms...
🗸🗸🗸: pH changes can denature enzymes
Why can jams and honey be stored at room temperature for long periods of time...
🗸🗸🗸: the high sugar content causes plasmolysis of bacterial cells
Microorganisms that can grow at salt concentrations as high as 15-30% are known as...
🗸🗸🗸: halophiles
An experiment involves the inoculation bacteria onto a variety of media with NaCl
concentrations ranging from 1% to 25%. Which of these media is most likely to be isotonic with
the bacterial cells...
2|Page
Correctly Answered Questions | UpToDate |
Already Graded A+
What is the role of resazurin in fluid thioglycolate medium...
🗸🗸🗸: Resazurin indicates the presence of oxygen in the media
A bacterial isolate is subcultured to two blood agar plates, one of which is incubated in an
anaerobe jar, and the other is incubated on a shelf in the incubator. After incubation, growth is
observed on the plate from the anaerobe jar, but there is not growth on the plate incubated on the
incubator shelf. Based on these results how would this organism be categorized...
🗸🗸🗸: obligate anaerobe
Where would you predict an facultative anaerobe would grow in a tube of fluid thioglycolate
medium...
🗸🗸🗸: throughout the tube
The pink color in the top of the broth in an FTM tube indicates...
🗸🗸🗸: the presence of oxygen
Both human pathogens and normal microbiota are typically classified as...
🗸🗸🗸: mesophiles
1|Page
, Taq polymersae is a DNA polymerase enzyme that demonstrates maximal activity at 72C. The
organism from which this enzyme was isolated would most likely be classified as a...
🗸🗸🗸: thermophile
Vibrio cholerae is the bacterium responsible for cholera, a GI tract infection. Normally, it takes
the ingestion of over one million bacterial cells to cause infection, but the consumption of
antacids significantly lowers this number. What does this tell you about the likely classification
of V. cholerae in terms of pH preference...
🗸🗸🗸: it is likely an alkaliphile
How does pH negatively affect the metabolism of microorganisms...
🗸🗸🗸: pH changes can denature enzymes
Why can jams and honey be stored at room temperature for long periods of time...
🗸🗸🗸: the high sugar content causes plasmolysis of bacterial cells
Microorganisms that can grow at salt concentrations as high as 15-30% are known as...
🗸🗸🗸: halophiles
An experiment involves the inoculation bacteria onto a variety of media with NaCl
concentrations ranging from 1% to 25%. Which of these media is most likely to be isotonic with
the bacterial cells...
2|Page
