Objectives: Differential Media
a medium whose exact chemical composition is known. ingredients have been identified and quantified.
complex; ingredients in a media have not been identified or quantified
all purpose media
supports most bacterial growth
(tryptic soy agar)
contain a component that can be used by some microorganismms but not by others
Explain why there is no universal medium capable of growing all bacteria?
due to the differences in bacteria.. whether they're gram positive, gram negative, etc.
Whats the difference between a water soluble and a water insoluble pigment?
Water soluble pigments dissolve in water. Water insoluble pigments do not dissolve in water
is an enzyme that is secreted by a cell and functions outside of that cell. used by bacteria to digest food
is an enzyme that functions within the cell in which it was produced
Name 4 all purpose medias
1. Starch agar
2. Blood agar
3. Eosin-Methylene Blue agar
4. Mannitol Salt agar