Question

What is a plaque composed of?

A) lysed bacteria, phage, and agar
B) bacteriophage and agar
C) lysed bacteria
D) live bacteria and bacteriophage
E) bacteriophage and dead bacteria

Answer 1

A plaque is composed of bacteriophage and dead bacteria. When a bacteriophage infects a bacterial cell, it replicates inside the cell and eventually causes the cell to burst, releasing new phages and causing the formation of a clear plaque on the bacterial lawn.

Step-by-step explanation:

A plaque is composed of E) bacteriophage and dead bacteria. A plaque is a clear area on a bacterial lawn caused by the viral lysis of host cells. When a bacteriophage infects a bacterial cell, it replicates inside the cell and eventually causes the cell to burst, releasing new phages and causing the formation of a clear plaque on the bacterial lawn.