BIO 121 Lecture Notes - Lecture 30: Tunxis Community College, African Trypanosomiasis, Giardia Lamblia
Document Summary
Euglenoids are small (10 500 m) freshwater unicellular organisms. Near the base of the longer flagellum is a red eyespot that shades a photoreceptor for detecting light they lack cell walls, but instead are bounded by a flexible pellicle composed of protein strips side-by-side. A contractile vacuole, similar to certain protozoa, eliminates excess water. Euglenoids reproduce by longitudinal cell division; sexual reproduction is not known to occur. The zooflagellates: phylum zoomastigophora these protozoa are covered by a pellicle often reinforced by underlying microtubules. Trypanosoma brucei, a trypanosome transmitted by the bite of a tsetse fly, is. Giardia lamblia cysts are transmitted through contaminated water; it causes. Trichomonas vaginalis is a sexually transmitted organism that infects vagina the cause of african sleeping sickness and urethra of women and prostate, seminal vesicles and urethra of men. Protists with pseudopods are part of the zooplankton, microscopic floating organisms they engulf prey with pseudopods, cytoplasmic extensions formed as cytoplasm.
