Discuss the significant differences between the flasks used by Pasteur and Spallanzanu

Question #1 discuss the significant differences between the flasks used by Pasteur and Spallanzanu. How did Pasteur’s investigation settle the theory of spontaneous generation and what were drawbacks of Spallanzani’s experiment?
#2 Though research find an article on Koch’s postulates and highlights how Koch’s postulates needed to be revised for today’s understanding of diseases. Use examples to explain.
#3 Alage and Bacteria are both considered microorganisms yet they have fundamental differences in their cell structure and classification. Explain the differences between algae and bacteria in terms of their cell structure , mode of nutrition and taxonomic classification.
Suggested sources : PubMed , BMC , ASM
Should be detailed , APA with 3 citations minimum . All scientific journals .