If you compare a bacterium and a eukaryote of the same genome size,
a. the bacterium likely has more insertion elements.
b. the bacterium likely has more genes.
c. the eukaryote likely has more metabolic pathways.
d. all of the above are true.
Answer: B
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__________ hold neighboring cells together. Fill in the blank(s) with the appropriate word(s)
During gas exchange, body cells
A) take up CO2 and release O2. B) release O2 to red blood cells. C) increase in size to accommodate the reuptake of O2. D) release CO2 and take up O2.
In an aquatic ecosystem, a secondary carnivore is temporarily excluded and then, after a period of time, is returned. Which one of the following is NOT an expected top-down effect after it is returned?
A. Algae decrease. B. Primary carnivores become less abundant. C. Primary productivity increases. D. Herbivores become more abundant.
Municipal chlorinated water contains
A. no viruses. B. no bacteria at all. C. no endospores. D. no cysts. E. a decreased microbial load.