Problem
A. Explain how you would use Robert Koch's postulates to determine that the human alpha-herpesvirus 3 (varicella zoster virus) is the causative agent of chicken pox (varicella).
B. Antibiotics are often derived from microorganisms.
a. List two antibiotic producing species of fungi and two bacterial antibiotic producing species.
b. What is the benefit to an antibiotic-producing microorganism of producing an antibiotic in its natural habitat?