Podcast
Questions and Answers
What is the optimal growth temperature for Bacteroides fragilis?
What is the optimal growth temperature for Bacteroides fragilis?
- 25°C
- 37°C (correct)
- 60°C
- 45°C
What is the pH range for optimal growth of Bacteroides fragilis?
What is the pH range for optimal growth of Bacteroides fragilis?
- 3-5
- 5-7 (correct)
- 7-9
- 9-11
What structures does B. fragilis use for adhesion to other molecular structures?
What structures does B. fragilis use for adhesion to other molecular structures?
- Cilia
- Lipopolysaccharide chains
- Flagella
- Peritrichous fimbriae (correct)
What type of bacterium is Bacteroides fragilis?
What type of bacterium is Bacteroides fragilis?
What type of metabolism does Bacteroides fragilis have in the gut microbiome?
What type of metabolism does Bacteroides fragilis have in the gut microbiome?
How does B. fragilis survive the volatile intestinal micro-environment?
How does B. fragilis survive the volatile intestinal micro-environment?
What is the role of cytochrome bd oxidase in B. fragilis?
What is the role of cytochrome bd oxidase in B. fragilis?
What does the environmental-sensory system of B. fragilis effectively handle?
What does the environmental-sensory system of B. fragilis effectively handle?
What is the main attributed factor for the high resistance to antibiotics of B.fragilis?
What is the main attributed factor for the high resistance to antibiotics of B.fragilis?
What is a characteristic feature of the antibiotic resistance mechanisms in members of the genus Bacteroides?
What is a characteristic feature of the antibiotic resistance mechanisms in members of the genus Bacteroides?
Which organism is the most prevalent in the B. fragilis group?
Which organism is the most prevalent in the B. fragilis group?
What do animals lacking gut bacteria require to maintain body mass?
What do animals lacking gut bacteria require to maintain body mass?
What do Bacteroides species accumulate in their gastrointestinal tract?
What do Bacteroides species accumulate in their gastrointestinal tract?
Which enzymes are utilized by B. fragilis to resist the degrading effects of bile salts?
Which enzymes are utilized by B. fragilis to resist the degrading effects of bile salts?
What permits growth in the presence of nanomolar concentrations of O2?
What permits growth in the presence of nanomolar concentrations of O2?
What permits B. fragilis to survive/adapt in the ever-changing human gut microbiome?
What permits B. fragilis to survive/adapt in the ever-changing human gut microbiome?
What is the cofactor required for Haemophilus species growth, known as the V factor?
What is the cofactor required for Haemophilus species growth, known as the V factor?
Which agar is an excellent growth medium for Haemophilus due to increased accessibility to the required factors?
Which agar is an excellent growth medium for Haemophilus due to increased accessibility to the required factors?
In the 'Staph streak' technique for culturing Haemophilus, what produces the necessary blood factor byproducts required for Haemophilus growth?
In the 'Staph streak' technique for culturing Haemophilus, what produces the necessary blood factor byproducts required for Haemophilus growth?
Which species is an exception to the requirement of X and V factors and can grow well on both blood and chocolate agars?
Which species is an exception to the requirement of X and V factors and can grow well on both blood and chocolate agars?
What is the main attribute of the 'V factor' for Haemophilus species growth?
What is the main attribute of the 'V factor' for Haemophilus species growth?
What is the primary function of the 'Staph streak' technique in culturing Haemophilus organisms?
What is the primary function of the 'Staph streak' technique in culturing Haemophilus organisms?
What do most species of the genus Haemophilus require for growth on blood agar plates?
What do most species of the genus Haemophilus require for growth on blood agar plates?
What prevents the growth of many Haemophilus species on blood agar plates?
What prevents the growth of many Haemophilus species on blood agar plates?
Why are Haemophilus bacteria categorized as pleomorphic?
Why are Haemophilus bacteria categorized as pleomorphic?
Which genus includes significant pathogenic species such as H. influenzae and H. ducreyi?
Which genus includes significant pathogenic species such as H. influenzae and H. ducreyi?
Where do Haemophilus organisms typically inhabit?
Where do Haemophilus organisms typically inhabit?
What prevents most species of the genus Haemophilus from growing on blood agar plates?
What prevents most species of the genus Haemophilus from growing on blood agar plates?
