One ml of a liquid suspension of bacteriophage is mixed with its host bacteria and plated. After incubation, the plate is completely clear. What is the probable explanation?
A) The bacteria mutated and could no longer be infected by this phage.
B) The bacteriophage doesn't grow on the type of agar used.
C) The bacteriophage culture was dead.
D) The phage concentration was so high that all the host bacterial cells were killed.
E) The phage concentration was too low to infect many bacterial cells.
Correct Answer:
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