U2 KA6 Environmental Control Of Metabolism Flashcards
What are the three main types of micro-organisms?
Archaea, bacteria, and some species of eukaryotes.
What is required in growth media for culturing micro-organisms?
Raw materials for biosynthesis and an energy source.
What are the key factors controlled when culturing micro-organisms?
Sterility, temperature, oxygen levels, and pH.
What are the four phases of microbial growth?
Lag phase, log/exponential phase, stationary phase, and death phase.
What is a growth curve in the context of micro-organisms?
A graph showing the changes in the number of micro-organisms over time during the different growth phases.
What are the two methods to measure the number of cells in a culture?
Viable cell count and total cell count.
What is the viable cell count?
The total number of cells that are currently living?
What is the total cell count?
Total number of cells dead and alive.
