Microbes that grow optimally at pH less than 7 are described as: 

Which of the following is not a characteristic of a virus? 

Which would be an example of contact transmission?

The type of reproduction in prokaryotes that results in a palisade arrangement of cells is called__________. 

When describing the stages of an infectious disease, which stage is associated with most severe signs and symptoms and is the peak of disease?

Place Koch’s postulates in the correct order:  1: Agent must be isolated and grown in pure culture 2: Same agent should be found in the diseased experimental host. 3: Suspected agent must be present in every case of the disease.  4: The cultured agent must cause the disease when it is inoculated into a healthy, susceptible experimental host. 

After scientists identify an effective antimicrobial agents, they quantitatively express its potency as _________. 

Which pathogen is responsible for lock jaw?

What viral family contains smallpox? 

What secondary infection can chicken pox manifest in older adults after viral reactivation?