The document describes an experiment where a microbiologist inoculated two bacteria, staphylococcus epidermidis and escherichia coli, into a culture medium. After incubation, only s. epidermidis grew, leading to questions about why e. coli did not grow. Possible explanations include that the culture medium was selective or other factors affecting bacterial growth.

1. a)complex.
b)defined.
2) microbiologist inoculated two bacteria usually found in human body, Staphylococcus epidermidis and Escherichia
coli, into a culture medium. Following incubation, only the S. epidermidis grew in the culture. What is the most likely
explanation that E. coli did not grow?
a)The culture medium was selective
b)The incubationsemperature was incorrect.
c) The culture medium was differential.
d)The microbiologist used too much inoculum.
e)The culture was contaminated.