You can see from this chart that the root words: sulfa, oxacins, cillins, and mycins are not exact for each category. It is helpful, however, as the types are used for different pathological (disease-causing) organisms. 
Explore the organisms that antibiotics are used for. 
Include the following aspects in the assignment: 

Make a simple chart for each of the six categories of antibiotics in the chart 
Research each category and under each describe the specific type of organism each might be used for (gram-positive cocci, gram-negative bacillus, etc.) 
Include the illness that might be caused by the organism (gastroenteritis, pneumonia, skin infection) 
Cite any references. At all times proper grammar, sentence structure, and spelling. 

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