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- The three types of external bacterial appearances are _____________, _____________, and _____________.you grew streak plates of Clostridium sporogenes under both aerobic and anaerobic conditions. Which plates showed bacterial growth, and what does the zone around the metronidazole disc represent? Additionally, explain what types of bacterial growth metronidazole affects and why.Describe the appearance of the area surrounding the bacterial growth of b.cereus on left and b.megaterium on right.
- What implications does the complex hydrophobic mycobacterial cell wall have in terms of treating diseases caused by these bacteria?What makes the cell wall of Listeria monocytogenes interesting in regard to the Gram-negative cell wall and the Gram-positive cell wall and also lipopolysaccharide (LPS) layer?What effect does decreasing the incubation temperature have on bacterial growth rate? Why?
- What protein is thought to control the shape of cells ofCaulobacter?If you altered the conditions under which bacterial growth normally occurs (i.e. increase the temperature of incubating a culture from 35 to 40°C), what effect would this have on the bacterial growth curve of the organism under study?What are the effects of the different agar concentrations, the temperature, and the dye types on the rate of diffusion? How do these factors mediate in the observed diffusion?
- Can you thoroughly explain the effect of pH on the growth of Bifidobacterium, an anaerobic, gram positive, non-acid-fast, nonsporeforming and nonmotile bacteria?List 5 physical factors required for bacterial growth.Gram-negative bacteria are generally more resistant to antibiotics than Gram-positive bacteria. What structure in Gram-negative bacteria (but not Gram-positive bacteria) is the basis of this difference?