Living things that are too small to be seen without a microscope
multicellular
organisms
unicellular
microorganisms
largest group of microorganisms. Can be shaped like rods, spirals, or spheres
bacteria
fungi
protozoa
algae
This microorganism makes bread rise
unicellular
algae
protozoa
yeast
The main producers in oceans, lakes, and rivers
fungi
protozoa
algae
bacteria
Medicines that cure diseases caused by bacteria and sometimes protozoa
vaccine
algae
virus
antibiotics
Harmful microorganism that can only live if it is inside something that is living
bacteria
fungi
penicillin
virus
Can produce a red tide in oceans that kills fish and makes people sick
bacteria
algae
protozoa
fungi
