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Filamentous molds can be further distinguished down to species level by employing biochemical tests
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- Filamentous molds can be identified down to their genera by cultural and morphological examination True or false?Mention schematically stages of the life cycle of Plasmodium. (If possible please refer to NCERT.)Explain how PEMBA (polymyxin-pyruvate-egg yolk-mannitol-bromthymol blue-agar) is used to isolate, differentiate and enumerate Bacillus cereus from food sample.
- a. What is the reproductive potential of molds in terms of sporeproduction?b. How do mold spores differ from bacterial endospores?Hypothetically make the Dichotomous key for Micrococcus luteus, Bacillus subtilis, Bacillus, Megaterium, Bacillus cereus, E.coli, Serratia Marcescens, and Enterobacter aerogenes based on colony morphology. Starting from the results of gram staining, catalase tests, (lactose, sucrose and glucose fermentation tests) and other biochemical tests for their accurate identification.Define the following terms that are commonly used describe colonies: 1. Form - 2. Elevation - 3. Margin -
- 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.What is the purpose of the cards used during exposure? What is the advantage of Bacillus species compared to this Serratia in this experiment?explain method and material of finding out about bacillus cereus in lab?
- Hypothetically draw the Dichotomous key for Bacillus subtilis, Bacillus, Megaterium, Bacillus cereus, M.Luteus, E.coli, Serratia Marcescens, and Enterobacter aerogenes based on colony morphology. Start the key from the gram stain, catalase tests, (lactose, sucrose and glucose fermentation tests) and other biochemical tests for their accurate identification.Describe the appearance of an S. agalactiae colony grown on blood agar. Describe how that colony would differ in appearance from a colony of S. pyogenes.Describe how specimen collection is performed using aseptic techniques to isolate medically significant bacteria and identify these clinically important bacterial species, Escherichia coli, Streptococcus pneumonia, Haemophilus influenzae and Streptococcus pyogenes by using different staining techniques and biochemical tests. Evaluate the effectiveness of different biochemical techniques used to identify different bacterial species.