br/gtBacteria play a vital role in life on Earth, inhabiting1
Inoculate the agar in the petri dish with bacteria from one of the test tubes.
Begin with test tube #1.
Test tube #1: staphylococcus aurenus
Test tube #2: haemophilus influenzae
Test tube #3: streptococcus pneumoniae
Dip a sterile metal loop into the sample and streak it onto the agar plate in a zig-