Podcast
Questions and Answers
Bacterial organisms form a biofilm to
Bacterial organisms form a biofilm to
- mate with other bacterial organisms of the same or different species
- find a food source when nutrients are scarce
- attach to a surface in an area where food is plentiful (correct)
- claim territory and fight off competing organisms of a different species
When a microorganism is found in an environment below its minimum growth temperature,
When a microorganism is found in an environment below its minimum growth temperature,
- growth stops because the cell membrane melts
- the cell dies
- growth slows but does not stop
- growth slows or stops because enzymatic processes become sluggish (correct)
Which of the following statements regarding examples of chemotrophy is FALSE?
Which of the following statements regarding examples of chemotrophy is FALSE?
- NAD plays an important role in chemotrophic metabolism
- Glucose is reduced compound that freely donates electrons to NAD, a more oxidized compound
- Glucose is an important chemotrophic carbon source
- Glucose is an oxidized compound that freely donates electrons to NAD, a more reduced compound (correct)
Which of the following is NOT used for attachment in biofilm formation?
Which of the following is NOT used for attachment in biofilm formation?
A facultative organism might prefer aerobic respiration over fermentation when carbohydrates become scarce because it gets
A facultative organism might prefer aerobic respiration over fermentation when carbohydrates become scarce because it gets
What type of disease transmission would be associated with pathogens that can form endospores?
What type of disease transmission would be associated with pathogens that can form endospores?
Which of the following is NOT required for microorganisms to grow and divide?
Which of the following is NOT required for microorganisms to grow and divide?
Which of the following is NOT necessary for endospore formation?
Which of the following is NOT necessary for endospore formation?
Which of the following is true about MacConkey medium?
Which of the following is true about MacConkey medium?
In the figure below, in which phase(s) do(es) the number of bacteria change exponentially?
In the figure below, in which phase(s) do(es) the number of bacteria change exponentially?
