1Acellular
Viruses are acellular, made of genetic material and protein. Not composed of cells and can infect any living thing.
2Algae
A protist, its cell walls contain cellulose and capable of performing photosynthesis. Agar, biofuels and lipstick make
3Archaea
Prokaryotic which means no membrane bound organelles or nucleus.
Unicellular and no known pathogens