Question

Give below is the diagram of a bacteriophage. In which one of the options all the four parts $A,B,C$ and $D$ are correct?

• A. tail fibres , head, sheath, collar
• B. sheath ,collar, head ,tail , fibres
• C. head , sheath, collar, tail, fibres
• D. collar, tail fibres, head, sheath

Answer 1

Answer: (C)

Bacteriophages are virus that infect bacteria. Phage literally means eaters of bacteria. The $T_4$ phage that infects the bacterium Escherichia coli consists of a polyhedral head attached to a helical tail, a shape commonly found in bacteriophages. Many phages have tail fibers that attach to the host cell.