Give a description of:
1) The history of Microbiology.
2) The early theory of spontaneous generation and describe one experiment which supported the theory.
3) List two experiments by early scientists and give a detailed description of how each experiment disproved the theory of spontaneous generation.
4) What components of the modern theory of the cell replace these early theories? Explain how does an understanding of cell biology contribute to our understanding of life and the origin of life?