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Investigate various protists such as Entamoeba histolytica and Paramecium caudatum. Learn about their unique features and reproductive processes. Engage in interactive lab exercises to deepen your understanding of these microscopic organisms.
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Lab Exercise 10: Protists
Station 1. Entamoeba histolytica Cysts are ingested in contaminated water or food and then trophozoites hatch out in the intestines and can be seen in fecal smears Name two ways parasitic Entamoeba histolytica is different from its pond water ‘cousin’ Amoeba proteus Answer: It has no contractile vacuoles or food vacuoles
Station 3: Giardia lamblia flagella
Vaginal smear Station 4: Trichomonas vaginalis
b. Method of reproduction? Asexual or sexual? Conditions? Station 5. Paramecium caudatum a. Method of reproduction? Asexual or sexual? Conditions? c. Anterior or posterior end? Answers: a. binary fission, asexual, good conditions b. conjugation, sexual, harsh conditions c. anterior end
Station 6. Plasmodium life cycle Sporogony zygotes Fertilization occurs Gametocytes Macro and micro Schizogony form Schizogony (10-14 days) 48 hour cycles
Station 7. Physarum (slime mold) cyclosis
Station 9. Dinoflagellates Name of groove? Answer: annulus
Station 10. Diatoms Habitats? Cell wall composed of? Answer: silica (glass) Answer: round marine, elongated freshwater
Station 12. Filamentous Green algae b. Haploid (n) or diploid (2n)? Spirogyra a. Type of reproduction? Asexual or sexual? Conditions? Answers: a. conjugation, sexual, harsh conditions b. diploid (2n)
Station 14. Brown agae blade Kelp algin