Across
- 2. Organisms that can function and reproduce on their own, unlike viruses
- 5. The part of a cell that produces energy- something viruses lack
Down
- 1. A virus is considered this because it cannot perform life processes on its own
- 2. Protective outer layer of a virus
- 3. The protein structre that allows viruses to attach to host cells
- 4. The type of cell a virus must infect to replicate