does E. coli spread out (swarm) from the circular inoculation on a Petri dish. Why or...
does E. coli spread out (swarm) from the circular inoculation on a Petri dish. Why or Why not?
when you inoculate a petri dish with e coli by only forming a circular inoculation, how is the bacteria moving? it is forming biofilm
Homework Answers
1. yes, e coli swarm from the circular inoculation when grown on agar in rich medium,
2. because they can produce more flagella.
3. whe you inoculate a plate the cells swirl about in packs and in the edges they form a monolayer. in the center, closer to the point of inoculation, there are multilayers.
4. yes its forming biofilm. E. coli can switch between planktonic form and biofilm form
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does E. coli spread out (swarm) from the circular inoculation on
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Directions: There are two parts for this lab. The first part is
working with the Microscope slides. The second part is working with
media.
Task 1 – Bacteriology Survey Microscope Slides
Directions: There are eight different bacterium you need to
research.
Below is the following bacterium you need to describe and include
an image for.
• Streptococcus
• Treponema
• Neisseria gonorrhoeae
• Klebisella pneumonia
• Unstained Bacillus
• Bacillus cereus
• Clostridium tetani
• Escherichia coli
Task 2 –...
1, (12 pts.) You are fortunate to obtain a strain of E. coli from the Pasteur Institute labeled #348, preserved from the work of Jacob & Monod. The genotype of the strain is Lac LacP Laco' Lacz' LacY. The Lacf mutation results in resistance to allolactose allosteric inhibition so it is always bound to the LacO operator. The LacY is a mutation resulting in zero permease activity. Lucky for you, today's echnology allows you to test this bacterial strain to...
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