Module 3 Study Guide 3-7

3. Which of the following genera contain organisms with chloroplasts? Amoeba, Euglena, Paramecium, Spirogyra
Euglena and Spirogyra

4. What is the function of a contractile vacuole? What is the difference between this and a food vacuole?
A contractile vacuole collects excess water in a cell and releases it into the surroundings to reduce the pressure in the cell. This keeps the cell from exploding. The food vacuole, on the other hand, stores food while it is being digested and has nothing to do with excess water or pressure.

5. What is the difference between endoplasm and ectoplasm?
Endoplasm is thick, while ectoplasm is thin and watery.

6. The amoeba and euglena each have different means of locomotion. How are they different? How are they similar?
The amoeba uses pseudopods which it creates by deforming its body. The euglena, on the other hand uses a flagellum. There is one bit of similarity. When it wants to move quickly, the euglena deforms its body in an almost earthworm-type motion.

7. Name at least three pathogenic organisms from kingdom Protista.
Entamoeba histolytica, Trypanosoma, Balantidium coli, Plasmodium, and Toxoplasma

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