We have stated that the number of deaths from infectious disease decreased in the period leading up to 1980. Name a major factor in that decrease during that time period (before 1980). 

What is herd immunity? 

DNA replication in prokaryotes is characterized by starting at ____________.  

Matching                                                                               

Which organism is most likely to be positive for catalase? 

_____________ is the process in which genes are transferred between bacteria using a mating bridge or other close contact.

Which is the best definition for the term endemic?   

List Koch’s Postulates for determining the cause of a disease? 

Which cells have most of their DNA in a large circle?

The diagnosis of AIDS requires a low level of what cell type?