Prevented with inoculation of weakened virus Can only reproduce inside a living cell Is dormant outside a living cell Averages 20 to 25 nanometers long Made up of nucleic acid inside a protein coat Single-celled living organism Reproduces by binary fission (splitting in two) Can be found in all ecosystems on Earth Averages 1000 nanometers long Can be treated with antibiotics Have DNA or RNA to carry genetic information Can cause disease in an organism Commonly called a pathogen Bacteria Viruses Most are beneficial to your health Do not carry out internal life processes Has a cell wall surrounding it Prevented with inoculation of weakened virus Can only reproduce inside a living cell Is dormant outside a living cell Averages 20 to 25 nanometers long Made up of nucleic acid inside a protein coat Single-celled living organism Reproduces by binary fission (splitting in two) Can be found in all ecosystems on Earth Averages 1000 nanometers long Can be treated with antibiotics Have DNA or RNA to carry genetic information Can cause disease in an organism Commonly called a pathogen Bacteria Viruses Most are beneficial to your health Do not carry out internal life processes Has a cell wall surrounding it

Prevented with inoculation of weakened virus Can only reproduce inside a living cell Is dormant outside a living cell Averages 20 to 25 nanometers long Made up of nucleic acid inside a protein coat Single-celled living organism Reproduces by binary fission (splitting in two) Can be found in all ecosystems on Earth Averages 1000 nanometers long Can be treated with antibiotics Have DNA or RNA to carry genetic information Can cause disease in an organism Commonly called a pathogen BacteriaViruses Most are beneficial to your health Do not carry out internal life processes Has a cell wall surrounding it