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Why is it necessary to sterilize the loop between streaks when streaking for single colonies?
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- what is the physical characteristics of this streak plate? Look at a single colony on a streak plate and look for special physical characteristics such as: motility, possible presence of endospores and/or capsule, culture color?How do you recognize individual colonies? Describe color, shape, size. Explain how the streak plate method enabled you to identify a single species from a mixed culture?Identify the texture, transparency, color, colony size, form, margin and elevation of the two colonies in the photo (a) and (b)
- Why is it important to use a sterilized loop between streaks when preparing a streakplate? Observation of a streakplate culture shows more growth in Quadrant 4 than in Quadrant 3. Account for this observation. Describe the way in which you can isolate an individual colony from a spreadplate or a streakplate that holds multiple colonies. Outline the differences between a streak plate and a spread plate.If you notice on your agar plate that there are more than one color of colonies-- What does this mean? What should you do? Can you use this plate for the identification of an unknown bateria?Why does a streaking method used to inoculate plates result in isolated colonies?
- Gardnerella vaginalis is a gram variable rod. What type of media should be used when culturing for it? Describe the appearance of the colonies.explain why you would expect to see similarities in the types of colonies on the fomite plates and the handwashing plates?Why are only the colonies growing close to the mold inhibited?