Which of the following organisms would be most likely to contaminate a jar of pickles?
A) a neutrophile
B) a thermophile
C) an acidophile
D) an obligate anaerobe
E) a mesophile
C
Bloom's Taxonomy: Analysis
Section: Growth Requirements
Learning Outcome: 6.6
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The following question(s) relate to the data table below, showing typical fluctuating pH and dissolved oxygen levels in a fish pond with a heavy concentration of algae over a 24-hour period.TimeOxygen (ppm)pH2 a.m.4.57.74 a.m.2.87.26 a.m.2.26.88 a.m.2.56.810 a.m.3.97.2Noon6.57.72 p.m.10.08.34 p.m.12.18.86 p.m.13.19.28 p.m.13.09.210 p.m.12.08.8Midnight10.88.3In such a pond that contains algae and fish, what is happening to the oxygen?
A. Oxygen is only consumed by the fish B. Oxygen is only consumed by both the algae and the fish C. Oxygen is only produced by the algae D. Oxygen is produced by the algae, and consumed by the algae and the fish
In mitosis, the main difference between plant and animal cells is that
A. plants do not undergo cytokinesis. B. plants produce a cell plate to segregate the daughter nuclei, while animals form a cleavage furrow. C. plants have a central vacuole, while animal cells do not. D. plants produce a cell membrane in cytokinesis, while animals form a cell plate. E. in plants, kinetochore microtubules shorten and draw chromosomes toward the poles; in animals, polar microtubules lengthen to push chromatids apart.
Algal blooms deplete the water of
a. oxygen. b. carbon dioxide. c. nitrogen. d. phosphorus. e. calcium.
Compare the differences between the biological species concept and the morphological species
concept used by Linnaeus. What will be an ideal response?