Culturing Microorganisms (AQA GCSE Biology): Flashcards

Growing them in lab using nutrients

Carbohydrates, minerals, proteins, vitamins

Wire loops used to spread microorganisms on agar

Prevents condensation disrupting growth

Prevent contamination from other microorganisms

Pass them through a flame

Would allow harmful anaerobic bacteria to grow

25 degrees

37°C allows harmful bacteria growth (body temp)

Bacteria multiplication - one splits into two

Every 20 minutes

Start × $2^{divisions}$ = end

Disc soaked in sterile water

Clear area where bacteria died around antibiotic disc

$\pi r^2$ where $r$ is radius