infectious diseases .
by ; vanessa hernandez
bacteria - single - cell prokaryotes that can cause disease's multiply rapidly and can form colones
fungi - a single cell or multi cellular organism that can decompose or absorb organic matter parasites - an organism that lives in or on another organisms .
pathogen- anything that causes a disease
eukaryotic- an organisms whose cells contain a nucleus and other organelles enclosed within membranes .
prokaryotic- contains DNA but no nucleus in cells .