Biology · BIOLOGICAL CLASSIFICATION

Refer to the structural representation of the bacteriophage in Figure 2.6(b). Which option correctly pairs the morphological region with its accurate biological role or molecular composition?

1. A
   Head encloses double-stranded DNA; Tail fibres assist in attachment to the bacterial host cell wall
2. B
   Collar contains peptidoglycan; Tail fibres inject viral protein into host cytoplasm
3. C
   Sheath contains single-stranded DNA; Collar forms the primary chitin cell wall
4. D
   Head contains single-stranded RNA; Sheath functions in photosynthetic light absorption