Measures of Disease Frequency ï° Incidence (I): Measures new cases of a disease that develop over a period of time. ï° Dictionary: âThe number of new health-related events in a defined population within a specified period of time.
Protists were traditionally subdivided into several groups based on similarities to the higher kingdoms: the unicellular animal-like protozoa, the plant-like protophyta (mostly unicellular algae), and the fungus-like slime molds and water molds.mong the pioneers in the study of the protists, which were almost ignored by Linnaeus except for some algae, were Leeuwenhoek, O. F. Mueller, MÃ¼ller. C. G ehrenberg And Felix. FÃ©lix dujardin the first groups used to classify microscopic organism Were the animalcules And. the infusoria
The largest group of heterotrophic protists is the protozoan group. Protozoa eat single-celled organisms such as bacteria and other protists; they do so either by engulfing their prey with their bodies or via animal-like mouth structures. The best-known type of protozoan is the amoeba, which eats by engulfing bacteria. Protozoa are capable of causing disease in humans.