5. Image of rod-shaped bacteria. 6. Image of a bacteriophage, a virus that infects bacteria.

5. Bacteria

The image displays rod-shaped microorganisms, which are characteristic of bacteria. Based on the context of biology, these are likely bacteria.

6. Bacteriophage

The second image clearly depicts a bacteriophage, which is a type of virus that specifically infects bacteria. Its structure, with a head containing genetic material, a sheath, and tail fibers, is a classic representation of a bacteriophage.