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
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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.
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
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
The process represented at step A of the accompanying figure is referred to as:
a. filtration. b. secretion. c. excretion. d. deamination. e. elimination