Exam 3 -- Protozoa 1 Flashcards
Protozoa is a _____ organism and reproduces via _______.
unicellular; binary fission
What are the 2 stages of protozoa?
cyst/trophozoite
Describe the cyst stage of the protozoa. What shape is it? What type of stage is this?
circular; dormant
Describe the trophozoite stage of the protozoa. What shape is it? What type of stage is this?
Irregular; Feeding, reproducing, moving
What stage of the protozoa is infective?
Cyst
What is the life cycle of the protozoa?
Cyst -> exocyst -> trophozoite -> encyst -> (no eggs)
What are the mobility classifications for the protozoa?
Non-motile;
Cilia;
Flagella;
Pseudopodia
What is the infection pathway of the protozoa?
- Oro-fecal pathway (cyst)
- Blood
What are the 3 different feeding mechanisms for the protozoa?
1- Osmotrophic;
2- Phagocytosis;
3- Cytosome
What feeding mechanism absorbs through the cell membrane?
Osmotrophic
What feeding mechanism engulfs food particles with pseudopodia?
phagocytosis
What feeding mechanism has a mouth like structure?
cytosome
What is organism 1?
Trophozoite
What is organism 2?
Cyst
What is 3?
Ingested Red Blood Cells
What is 5?
Karyosome
What is 6?
Nucleus
What is 7?
Chromatoidal bars
What is 8?
Karyosome
What is 9?
Nucleus
What type of mobility is this?
Cilia
What type of mobility is this?
Flagella
What type of mobility is this?
Pseudopodia
What stage of the protozoa can resist harsh and acidic environments?
Cysts
