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A. nucleus. B. flagella. C. chloroplasts. D. mitochondria.

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A. nucleus. B. flagella. C. chloroplasts. D. mitochondria.

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  1. 3. A scientist uses a microscope to examine two slides of living bacteria. Each slide contains a different type of bacteria. While the cells on the first slide are moving rapidly, the cells on the second slide are stationary. Based on these observations, the cells on the second slide most likely have no A. nucleus. B. flagella. C. chloroplasts. D. mitochondria. :15

  2. 4. An aquatic ecologist collects data about the water quality of an Ohio lake throughout the year. In the summer, the ecologist shares data with a public health official from a nearby town. Which data would a public health official use to determine whether the water was safe for swimming? A. the temperature of the surface water B. the amount of dissolved oxygen in the deep water C. the number of water lilies, N. odorata, growing in the lake D. the concentration of E. coli bacteria near the surface of the lake :15

  3. 5. The picture shows some of the structures in a single-celled organism. The presence of which structure provides evidence that this organism is capable of locomotion? 5 • cell wall • ribosome • flagellum • cytoplasm 0 :15 index

  4. 6. Energy produced by cellularprocesses is stored as • CO2. • ATP. • DNA. • RNA. index

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