Bacteria: Very small cells, Can be treated with antibiotics, Tuberculosis, MRSA, Have cell membranes similar to eukaryotes, Can replicate through binary fission, Have peptidoglycan cell walls, Gram positive / Gram negative varieties, Cholera, May have flagella, cilia and/or pili, May have plasmids (additional DNA coding for specific characteristics), All have a nucleoid (circular strand of DNA), May have mesosomes, Viruses: Not cells, Cannot be treated with antibiotics, HIV, Influenza, Have protein capsids, Can replicate through lytic/lysogenic cycle, May use DNA or RNA as "main" genetic info, May have an envelope produced from the host cell membrane, Covid-19, Non-motile, Very small 0.02-0.3ᵤm , uses repeating protein units called capsomeres minimising the genetic material needed to code for them, All have antigens known as virus attachment particles that target the hosts cell surface membrane,

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