One of the most viable indicators of evolutionary relatedness and affiliation is a comparison of the sequence of nitrogen bases in ribosomal RNA.

a. true
b. false


Answer: a. true

Biology & Microbiology

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A bacteriologist is studying two asexually reproducing strains of E. coli. The two require different amounts of trace minerals for survival; on these grounds, the bacteriologist determines that they are separate species

In making his determination, he is using which species concept or concepts? Select all that apply A. biological species concept B. ecological species concept C. morphospecies concept D. evolutionary species concept E. none of these

Biology & Microbiology

Which of the following statements is true regarding CO2 capture and the Calvin cycle in CAM plants? Select all correct choices

A. CO2 capture occurs at night and the Calvin cycle takes place in the day. B. CO2 is captured in mesophyll cells and the Calvin cycle occurs in bundle-sheath cells. C. CO2 capture and the Calvin cycle both occur in the same cell. D. CO2 capture and the Calvin cycle both occur during the day (in sunlight).

Biology & Microbiology

Which of the following pairs is NOT a mutualism?

a. mycorrhizae ? plant b. Rhizobium ? legume c. ant ? acacia tree d. giant moray ??bluestreak cleaner wrasse? e. ant ? yucca plant

Biology & Microbiology

Between 7 and 8 am, the lizard was likely exposed to solar radiation.

a. true b. false

Biology & Microbiology