_Protist_test_review - Chapter 29 Protists Test Review...

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Chapter 29 Protists Test Review Sheet 1) What happens when a mosquito infected with Plasmodium first bites a human? 2) In an area with a high abundance of algal blooms, the introduction of _____ might alleviate the severity of the blooms. 3) Encouraging the growth (via nutrient fertilization) of photosynthetic protists in marine environments may help reduce global warming. Why? 4) Plankton is comprised of photosynthetic protists and bacteria. What is the primary importance of plankton to humans? 5) Which of the following is most likely to lead to PSP (paralytic shellfish poisoning)? 6) Which of the following might be a result of adding a secondary consumer (a species that feeds on primary consumers) to an aquatic ecosystem? 7) Which of the following monophyletic eukaryotic clades includes photosynthetic species with double-membraned chloroplasts? 8) Which of the following eukaryotic lineages contains species that all lack functioning mitochondria? 9) You discover a new eukaryotic species. It is non-photosynthetic, unicellular, and its motile cells contain a single flagellum. To which group of eukaryotes might this organism belong? 10) Which of the following statements is consistent with the assertion that protists are paraphyletic? Use the following information to answer the corresponding question(s). Giardia intestinalis can cause disease in several different mammalian species, including humans. Giardia organisms ( G. intestinalis ) that infect humans are similar morphologically to those that infect other mammals; thus they have been considered a single species, though other species in the Giardia genus infect other organisms. However, G. intestinalis has been divided into different subgroups based on their host and a few other characteristics. In 1999, a DNA sequence comparison study tested the hypothesis that these subgroups actually constitute different species. The following phylogenetic tree was constructed from the sequence comparison of rRNA from several subgroups of G. intestinalis and a few other morphologically distinct species of
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This note was uploaded on 04/18/2011 for the course BIOLOGY 25 taught by Professor Dr.larrybuckley during the Spring '11 term at RIT.

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_Protist_test_review - Chapter 29 Protists Test Review...

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