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Biology

Critical Thinking Questions

BiologyCritical Thinking Questions
18.

Describe the hypothesized steps in the origin of eukaryotic cells.

19.

Explain in your own words why sexual reproduction can be useful if a protist’s environment changes.

20.

Giardia lamblia is a cyst-forming protist parasite that causes diarrhea if ingested. Given this information, against what type(s) of environments might G. lamblia cysts be particularly resistant?

21.

The chlorophyte (green algae) genera Ulva and Caulerpa both have macroscopic leaf-like and stem-like structures, but only Ulva species are considered truly multicellular. Explain why.

22.

Why might a light-sensing eyespot be ineffective for an obligate saprobe? Suggest an alternative organ for a saprobic protist.

23.

How does killing Anopheles mosquitoes affect the Plasmodium protists?

24.

Without treatment, why does African sleeping sickness invariably lead to death?

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