Define microbiology.
 2. Explain who Robert Koch was and his importance to microbiology.
 3. Explain who Alexander Fleming was and tell how important he was to microbiology.
 4. Say what are the sciences associated with microbiology.
 5. In your opinion, is microbiology an important science for health sciences?
 6.  Make a summary of the history of microbiology.
 Please be brief in your answers and provide reliable references.