MICI 4218 Lecture Notes - Lecture 31: Apicomplexan Life Cycle, Entamoeba, Parasitic Disease
12 May 2021
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Mici 4218 lecture 31 march 31, 2021 parasitology. Eukaryotic: mixed group of organisms from protozoa to helminths, distinct from fungi, no chlorophyll. Ectoparasites: insects and arachnida found on the skin. Gi tract) they do not need them because of altruisim: development of pathogenic adaptations (ex. Mechanisms of attachment (hookworms): defense mechanisms (ex. Some parasites require infection of a host to complete their lifecycles (obligate parasites) Other parasites may be free living in the environment and do not need to cause infection to persist. Protozoa (based on means of locomotion: amoebae (phylum: amoebozoa) The organism flow in the direction of the extrusions: occur as trophozoites (active, growing) and cyst (environmentally protected) forms. The trophozoites form is involved in infection multiplying, moving around, taking in nutrients: when the environment is unideal, the trophozoites will start producing an outer protective layer (cyst wall) to form a cyst.
