How are bacteria beneficial to humans?
How can bacteria be helpful to humans?
How can bacteria be harmful to humans? Is there an ecological importance for bacteria? How do bacteria consume food? What is the ecological importance of bacteria? How does bacteria help plants grow? In what ways? What are the roles of nitrogen-fixing bacteria? How important is it? Can humans survive without bacteria? What are the key molecular components and genetic elements needed for gene expression (i.e., transcription) in bacteria? What are some things that we still don't know about bacteria? How do bacteria fight white blood cells? Can bacteria get infected by a virus? What are some examples of typical bacteria? Can we live without bacteria? What are the functions of the 3 existing kind of bacteria? How non-motile bacteria obtain nutrition? Do bacteria have chloroplasts? If so, what are their functions? How are multicellular bacteria produced? How do motile bacteria obtain nutrition? Why is microbial ecology important? How does bacteria die in food? Is it a common feature of all mammals to have more bacterial than self cells in the body? Are bacteria animals or plants? What is the importance of microbial ecology? Can bacteria infected by a virus? What are some examples of places where bacteria can be found? How can we respond against increasing multi-resistant bacterial epidemics? Do a normal hand wash, clean a hand from e. coli and other fecal bacterias? How much heat is required to kill bacteria in food? Microbiology: Do negative ions kill fungi, bacteria, viruses and dust mites? How effective are these  devices? What are common diseases caused by bacteria?