Mаtch eаch pаthоgen tо the оrganism's list of cellular traits. Each pathogen is only used once. Use the clues in the descriptions to help you distinguish between prokaryote (gram + or -), eukaryote (protist or fungal), or virus (with or without reverse transcriptase). There is more info here than you need, but you have learned relative sizes, growth rates, and other cellular features that distinguish each pathogen type.