Lesson 2 Populations Flashcards
1
Q
What is a population?
A
A population is the number of one species in a particular area
2
Q
Why was agar jelly used when culturing microorganisms?
A
Contains nutrients for bacterial growth to occur
Glucose, Amino Acids and Mineral Ions
3
Q
What term do we use to describe visible growth in bacteria?
A
COLONY
4
Q
What is the aseptic technique?
A
Flaming the inoculation loop
Disinfectant of desk with ethanol
Minimal exposure to air (taping lid shut)
Partially opening lid
Allow inoculation loop to control after flaming
Seal petri dish
Safe disposal of used equipment in sterile packaging
5
Q
Sigmoidal growth curve (bacteria population)
A
The population on the x-axis
Time on y-axis
Lag, exponential, plateau and the death phase
