Which of the following is a protozoan with two nuclei and no mitochondria?

A) Plasmodium
B) Paramecium
C) Euglena
D) Giardia
E) Trichomonas


D
Bloom's Taxonomy: Knowledge
Section: Protozoa
Learning Outcome: 12.12

Biology & Microbiology

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A serious limitation of using a retrovirus as a vector for gene therapy is that

A) the retrovirus may insert into a proto-oncogene, causing cancer. B) a genetically modified retrovirus causes AIDS. C) it causes ADA accumulation. D) reverse transcriptase will not work in human cells.

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Angiosperms are more advanced than gymnosperms

because gymnosperms lack which structure found in angiosperms? a. independent sporophyte b. pollen grains c. flowers d. spores e. seeds

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A linear depiction of energy flow in an ecosystem is:

a. a food web. b. a food chain. c. a trophic web. d. an ecological pyramid. e. a pyramid of numbers

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The process represented at step A of the accompanying figure is referred to as:

a. filtration. b. secretion. c. excretion. d. deamination. e. elimination

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