Microbes

1. Noncellular Microbes

1.1. Viruses

1.2. bacteriophage

2. Cellular Microbes

2.1. Eukaryotes

2.1.1. Nucleus

2.1.2. Helminths

2.1.3. Fungi

2.1.4. Algae

2.1.5. Protozoa

2.2. Prokaryotes

2.2.1. No nucleus

2.2.2. Bacteria