Protozoa that live in the gut of a termite and help to digest wood are engaged in 

A. mutualism.
B. competition.
C. communism.
D. amensalism.


A. mutualism.

Biology & Microbiology

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Current analysis indicates that less than 2% of the human genome codes for proteins

Based on the systems approach employed by the ENCODE project, what percentage of the genome is estimated to contain functional elements (includes functional RNAs and regulatory sequences)? A) Less than 2% B) About 50% C) At least 80% D) 100%

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Which of the following is not correct concerning Legionnaires' disease?

a. cases have been traced to the fallout from the Mount Saint Helen's Volcano b. symptoms include cough, diarrhea, and abdominal pain c. L. pneumophila lives in close associations with free-living Amoebas d. the disease is communicable from person-to-person e. it is more common in males over 50 years of age

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A currently accepted hypothesis for gravitropism in plants is that:

A) sedimentation of organelles triggers hormone release. B) bending of leaves in response to gravity triggers growth in the opposite direction. C) microscopic eyespots trigger upward (skyward) growth. D) ground contact inhibits stem growth while air stimulates it.

Biology & Microbiology