Question

Given 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. A - Tail fibres, B - Head, C - Sheath, D - Collar
• B. A - Sheath, B - Collar, C - Head, D - Tail Fibres
• C. A - Head, B - Sheath, C - Collar, D - Tail fibres
• D. A - Collar, B - Tail fibres, C - Head, D - Sheath

Answer 1

The correct option is C A - Head, B - Sheath, C - Collar, D - Tail fibres

Bacteriophages are virus that infect bacteria. Phage literally means eaters of bacteria. The T4 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.