Ellele Me
bacterium A
Covered with
bacterium B
Placedo
covered with
bacterium C
each pla
Clear zone
bacteria
Incubation at 37°C for 48 hours
Bacterial
growth
Result
[Adapted from 2004 HSC NSW: Section 1 - Part B Q27)
The plates were incubated at 37°C for 48 hours. The diagram of plates 1, 2 and 3
in the bottom row show the results of the investigation.
2.1 Formulate a hypothesis for this investigation.​