Microbiology Experiment Results and Conclusions
Explore the findings from microbiology experiments involving starch metabolism, oxygen requirements, Gram staining, and colony observations. The results reveal details about the bacteria present, their characteristics, and growth conditions. Discover the identification of Bacillus subtilis and Escherichia coli in different experimental settings, shedding light on their behavior and metabolic activities.
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Presentation Transcript
Group 10 Group 10 Sophia Topoliov Slovakia Ane ka Jurkov Czech Republic Kacper Karo Poland
Re Result sult of 1. experiment of 1. experiment - - starch starch metabolism metabolism A Observation: The first Petri dish has a smile and the second does not have a smile. Result: The white places are without starch because the bacteria metabolised it. Conclusion: B We expect that in the first Petri dish there is Bacillus subtilis and in the second E. coli.
R Result esult of 2. experiment of 2. experiment oxygen oxygen need need Observation: Bacteria are on the top of the solution in both tubes and inside the A B solution in tube B. Result: Bacteria on the top can grow with the air/oxygen -> AEROBIC (A) and bacteria in the solution can grow without the air/oxygen -> ANAEROBIC and bacteria which can grow both with and whitout air/oxygen is FACULTATIVE ANAEROBIC (B) Conclusion: A -> Bacillus subtilis, B -> E. coli
R Result esult of 3. experiment of 3. experiment Gram Gram quick quick test test A Observation: The B mixture on the optical glass is sticky and the A is liquid. Result: Object plate 1 The A mixture is gram positive because it has thick cell walls not dissolved by KOH. B The B mixture is gram negative because it has thin cell walls and it s dissolved by KOH. Object plate 2 Conclusion: On the first optical glass (A) there is Bacillus subtilis and on the second (B) E. coli.
Final Final conclusion conclusionof of three three experiments experiments A -> metabolised starch, aerobic, gram positive B > not metabolised starch, facultative anaerobic, gram negative A -> Bacillus subtilis B -> Escherichia coli
R Result esult of 4. experiment of 4. experiment pure pure colonies colonies Pure colonies are located in little dots. The largest amount of bacteria is on the side where we Pure colony 1 started applying them and the smallest amount is in the middle of the Petri dish. Pure colony 2
