Bacterial Metabolism Experiments and Conclusions
Explore a series of experiments focusing on bacterial metabolism, oxygen requirements, Gram testing, and pure culture production. Discover the characteristics of E. coli and Bacillus subtilis, highlighting starch metabolism, aerobicity, and Gram staining results.
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Presentation Transcript
Group 12 Gabriel Lithuania Wiktoria Poland Julien Germany
Experiment 1 starch metabolism B A Observation: No bacteria visible Result: Experiment was unsuccessful
Experiment 2 oxygen need A B Observation: A: grew mostly inside and a bit on the top B: grew on the top Results: A: facultative anaerobe B: aerobe Conclusion: A: E. coli B: Bacillus subtilis
Experiment 3 Gram quick test Observation: A: slimy, there is a string B: watery, no string Results: A: Gram-negative B: Gram-positive Conclusion: A: E. coli B: Bacillus subtilis B A
Experiment 4 production of pure culture Conclusion: Pure colonies small dots Largest amount of bacteria is in first 3 stripes Unsuccessful attempt with bacteria A Pure colonies
Conclusion Bacteria A: No information about starch metabolism Facultative anaerobe Gram-negative E. coli Bacteria B: No information about starch metabolism Aerobe Gram-positive Bacillus subtilis
