Question Detail
Question
On a MacConkey agar plate, what color do lactose-fermenting E. Coli colonies typically appear?
Correct Answer
Option B is the correct answer.
Detailed Explanation
Page 15, in the 'SELECTIVE MEDIUM' caption, states 'On this MacConkey agar plate, the lactose-fermenter E. Coli colonies are bright pink.'
Hint
MacConkey agar is a differential medium; consider how lactose fermentation is visualized.