Abacterial is the resulting growth following the inoculation of a medium. this general term does not specify whether there is a single species of bacteria in the medium ( culture), or several known types ( culture).

The correct words for the gaps are : culture- pure- mixed

Explanation:

In microbiology the term bacterial culture describes the growth of bacteria that follows the inoculation of a medium. There are different types of mediums, can be gels or solutions, but basically consist in a nutrient source that under adequate conditions allows bacterial growth. When the culture is composed of only one single species, we called it pure culture while when there more than one species we talk of mixed culture.  

allowed for the prediction of the properties of missing elements.