Q: Which of the following structures is most likely missing in a bacterium that regenerates from an…
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Q: List the four phases of the bacterial growth curve:
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Q: What if the purpose of bacterial culture? Why might it be useful to grow bacteria?
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A:
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Q: what practical significance are capsule forming bacteria in industry and medicine?
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Q: What factors can cause a lag phase in a bacterial growth curve?
A: The bacterial growth curve represents the number of live cells in a bacterial population over a…
Q: For growth, a mutant bacterium requires that an amino acid not required by the wild parental strain…
A: Answer :- For growth, a mutant bacterium requires that an amino acid not required by the wild…
Q: Escherichia coli but not Pyrolobus fumarii will grow at 40°C,while P. fumarii but not E. coli will…
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Q: If you altered the conditions under which bacterial growth normally occurs (i.e. increase the…
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Q: Why does a one-step growth curve differ in shapefrom that of a bacterial growth curve?
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Q: how often must bacteria be subcultured from a broth to maintain culture viability?
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Q: Which bacterium helps in dairy industry?
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Q: Contrast the mechanism for motility in Flavobacteriumwith that in Escherichia coli.
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Q: E.coli was incubated with aeration in a nutrient medium containing two carbon sources provided one…
A: First of all, E. coli can utilize glucose and lactose both as a carbon source. Lactose is a…
Q: Describe the following phases of the bacterial growth curve and draw them out: a. Lag phase b.…
A: Answer
Q: Why do some organisms grow within the zones of growth inhibition caused by the antibiotics?
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Q: Why are agar plates incubated upside down?
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Q: How are lactic acid bacteria different from otheranaerobes and why are they usually restricted…
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Q: What functions do endospores have in the proliferation, dispersal and survival of bacteria? Please…
A: Bacteria are the primitive type of cells that do not contain membrane bound organelles on a simple…
Q: What are the differences between true and false movement of bacteria?
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Q: Why inoculate from just a single colony?
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Q: Compare and contrast the growth of bacteria in different physical types of media (broths, slants,…
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- Why is nutrient broth considered as a universal growth medium for bacteria?A bacterium is inoculated into a medium containing two carbon sources, one of which is the bacterium’s preferred carbon source. The resulting growth curve shows two lag phases. Explain this phenomenon. What is this type of growth called? Include a diagram of what the growth curve would look like and indicate the usage of each carbon source.What are the defining characteristics of the exponential/log phase of the bacterial growth curve. Explain the culture conditions that arise that cause the phase to end. In different culture media, and the exact same starting inoculum, will the end of exponential/log occur at the same time? Why or why not? A graph or a drawing of the growth curve would help but is not essential to answer this question.
- Escherichia coli but not Pyrolobus fumarii will grow at 40°C,while P. fumarii but not E. coli will grow at 110°C. What ishappening (or not happening) to prevent growth of eachorganism at the nonpermissive temperature?what type of bacteria may cause spoilage in coconut water that has been in the fridge for more than a week?Describe the events that occur with E. coli in each of the following growth conditions: in a medium containing glucose but not lactose; in a medium containing both sugars; in a medium containing lactose but no glucose; and in a medium containing neither sugar
- How would a limited food supply affect the bacterial growth curve? The lag phase would be longer than if the food supply were unlimited. The log phase would be shortened. The culture would not enter a death phase but would remain stationary indefinitely. The death phase would be shortened.In what phase of the bacterial growth curve do cells die at rapid rates?Diseases that involve biofilm-producing bacteria are serious concern. They are not easily treated compared with those involving free-floating bacteria. Explain three reasons why biofilm formers are more pathogenic.
- Pseudomonas bacteria have porin proteins, are resistant to the chemical triclosan, and survive and can even multiply in quaternary ammonium compounds. True or False?Bacteria use many different modes of nutrition. Please discuss these modes using the terms photoautotroph, photoheterotroph, chemoautotroph and chemoheterotroph.What is the benefit of using LB (Lysogeny broth) medium for the growth of E. coli, Bacillus subtilis and Pseudomonas putida? Why ?