How would an earthworm stretch its body to reach a patch of dirt after crossing a hot sidewalk?

A. Contraction of the longitudinal muscles
B. Contraction of the circular muscles
C. Relaxing the chaetae (setae)
D. Pulling on the chaetae (setae)


Answer: B

Biology & Microbiology

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Which organism would be classified as a chemoautotroph?

a. cactus b. lichen c. oak tree d. green algae e. nitrogen-fixing bacteria

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If you were highly allergic to bee stings, which of the following would be dangerous for you to do?

A. wear sweet-smelling perfumes B. wear red shirts C. wear dark, drab clothing D. hum as you work E. None of the choices provided are dangerous.

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The purpose of meiosis I is

A. to create 4 haploid cells. B. to separate homologous chromosomes. C. to replicate chromosomes. D. to repair errors in DNA synthesis. E. to separate sister chromatids.

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Which of the following samples would contain the MOST genetic diversity?

A) viral metagenomes from the ocean B) bacterial metagenomes from the ocean C) microbial eukaryotic metagenomes from the ocean D) viral metagenomes from human red blood cells

Biology & Microbiology