Which of the following could be electron acceptors in anaerobic respiration?
A. nitrate or oxygen
B. sulfate or oxygen
C. lactic acid
D. nitrate or sulfate
E. All of the answer choices are correct.
D. nitrate or sulfate
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Match the term with its description.
A. Associated with the reproduction of aquatic fungi B. Method of asexual reproduction demonstrated by yeast cells C. Found at the tips of special hyphae
Many male songbirds are brightly colored. However, the color of the birds is usually determined by a balance of
A. sexual selection that reduces bright colors and natural selection in favor of bright colors. B. natural selection against bright colors due to predation and mutations that introduce bright colors. C. mutations that reduce bright colors and gene flow in favor of bright colors. D. natural selection against bright colors due to predation and sexual selection in favor of bright colors. E. mutations that reduce bright colors and sexual selection in favor of bright colors.
Classification. Match the following descriptions to the most appropriate function, process, or trait listed below.
A. The transmission of DNA from parent to offspring B. Process by which individuals produce offspring C. A process found only in plants, some bacteria, and some protists D. E. A characteristic most organisms exhibit that tends to keep their internal environment within a range that favors survival
What type of exteroceptors are located in the ear?
A. chemoreceptors B. photoreceptors C. mechanoreceptors D. thermoreceptors E. none of these