You have the option of selecting either option A or B for ea…
You have the option of selecting either option A or B for each question. If you respond to both options, only the first response will be graded. Please indicate which question you intend to respond to. 2A. Explain how beta lactam antibiotics work, identify the type of bacteria that they work best against and discuss at least two ways that bacteria can become resistant. 2B. List and describe four criteria designed by Koch to establish a causative relationship between a microbe and a disease.