BIMM 120 Midterm 2 questions with
verified answers passed
What is F0 driven by? - correct answer ✔✔ Proton motive force
What is F1 driven by? - correct answer ✔✔ ATP hydrolysis
What are bacteria flagella made of and in what order? - correct answer ✔✔ 1) Basal body 2)
Hook 3) Filament
Why would flagella change direction? - correct answer ✔✔ Based on chemotactic signal
transduction that monitors the environment it is in
What makes up MotAB? - correct answer ✔✔ MotA and MotB
What steps are the flagella constructed in? - correct answer ✔✔ 1) Basal body 2) Filament 3)
Hook
What does FliK do? - correct answer ✔✔ Regulates the hook length like a ruler
What would change a bacteria's motility strategy? - correct answer ✔✔ Presence of a surface or
change in viscosity
What's important about the sodium motive force? - correct answer ✔✔ It is an alternate form
of energy for swarming and used to generate a moving kink
, What is the trade off between nutrients and motility? - correct answer ✔✔ In order to reach
the nutrients cells need to use a high amount of energy to move there
What is the significance of cAMP - correct answer ✔✔ It reflects growth under carbon-limited
conditions
Why is the flagellum detrimental to pathogens? - correct answer ✔✔ The flagellum is where
antibodies bind and triggers an immune system response
How do bacteria affect their community members? - correct answer ✔✔ Chemotactic
responses
What happens at higher densities of cells and swimming? - correct answer ✔✔ Increased
physical interactions between bacteria through colliding or displacing the fluid
How is the flagellum beneficial at surfaces? - correct answer ✔✔ The flagellum serves as an
adhesin to attach to the surface
Why is the flagellum beneficial for pathogenic bacteria? - correct answer ✔✔ Important for
successful host colonization and infection because it provides a motility advantage
What is the rhizosphere? - correct answer ✔✔ Area of soil around roots that is rich in nutrients,
leading to a higher concentration of microbes in these areas
Why can the rhizosphere be harmful for a plant? - correct answer ✔✔ Harmful bacteria can
accumulate in these areas and some chemicals in the rhizosphere can enable host selection for
invasion
Why is adhesion to surfaces important? - correct answer ✔✔ It resists fluid flow and enables
injection of virulence factors
verified answers passed
What is F0 driven by? - correct answer ✔✔ Proton motive force
What is F1 driven by? - correct answer ✔✔ ATP hydrolysis
What are bacteria flagella made of and in what order? - correct answer ✔✔ 1) Basal body 2)
Hook 3) Filament
Why would flagella change direction? - correct answer ✔✔ Based on chemotactic signal
transduction that monitors the environment it is in
What makes up MotAB? - correct answer ✔✔ MotA and MotB
What steps are the flagella constructed in? - correct answer ✔✔ 1) Basal body 2) Filament 3)
Hook
What does FliK do? - correct answer ✔✔ Regulates the hook length like a ruler
What would change a bacteria's motility strategy? - correct answer ✔✔ Presence of a surface or
change in viscosity
What's important about the sodium motive force? - correct answer ✔✔ It is an alternate form
of energy for swarming and used to generate a moving kink
, What is the trade off between nutrients and motility? - correct answer ✔✔ In order to reach
the nutrients cells need to use a high amount of energy to move there
What is the significance of cAMP - correct answer ✔✔ It reflects growth under carbon-limited
conditions
Why is the flagellum detrimental to pathogens? - correct answer ✔✔ The flagellum is where
antibodies bind and triggers an immune system response
How do bacteria affect their community members? - correct answer ✔✔ Chemotactic
responses
What happens at higher densities of cells and swimming? - correct answer ✔✔ Increased
physical interactions between bacteria through colliding or displacing the fluid
How is the flagellum beneficial at surfaces? - correct answer ✔✔ The flagellum serves as an
adhesin to attach to the surface
Why is the flagellum beneficial for pathogenic bacteria? - correct answer ✔✔ Important for
successful host colonization and infection because it provides a motility advantage
What is the rhizosphere? - correct answer ✔✔ Area of soil around roots that is rich in nutrients,
leading to a higher concentration of microbes in these areas
Why can the rhizosphere be harmful for a plant? - correct answer ✔✔ Harmful bacteria can
accumulate in these areas and some chemicals in the rhizosphere can enable host selection for
invasion
Why is adhesion to surfaces important? - correct answer ✔✔ It resists fluid flow and enables
injection of virulence factors
