WorksheetsA221 Team 4 Lesson 8
Total questions: 10
Worksheet time: 3mins
How does A.Fischeri help the Bobtail squid?
It doesnt help
It helps to hide it from predators.
It protects it from prey.
For protection from predators and hide from prey.
What is the symbiotic relationship between A.Fischeri bacteria and the Bobtail squid?
Mutualism
Commensalism
Parasitism
What is the cell arrangement of A.Fischeri?
It looks like a fish
Coccus
Vibrio
Bacillus
Communication cannot occur between Gram-positive and Gram-negative bacteria.
True
False
What is the difference in communcation between Gram-positive and Gram-negative bacteria?
AHL
Type of autoinducers
SHL
AIP
Both Gram-negative and Gram-positive use both regulatory and sensory proteins in the quorum sensing.
True
False
Quorum sensing such as bioluminescence can only occur in high cell density.
True
False
Which gene is involved in producing the bioluminescence effect?
Lac operon
Bacterial gene
Trisomy 21
Luciferase gene
How many phases are involved in biofilm formation?
0
2
5
4
What is the 3rd stage of biofilm formation and function?
Maturation I - Fully mature biofilm acts as protective coating and barrier
Maturation I - Arrival of other cells and polysaccharide matrix forms.
Dispersion - Colonise new surfaces by dispersing single dividing cells.
Initial attachment - Biofilm formation
