Mycorrhizae are nitrogen-fixing bacteria living within the roots of certain tropical trees
Indicate whether the statement is true or false
FALSE
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A type of fungus that produces toxic alkaloids is
a. Aspergillus. b. the death cap mushroom. c. ergot. d. the Psilocybe mushroom
Ancestors of whales are believed to have been artiodactyls, a group of terrestrial mammals including all of the following animals except ________
a. deer b. antelope c. pigs d. horses
Before another action potential “spike” can occur
a. there must be a very brief restoration of the resting conditions in the membrane. b. the membrane voltage must drop to zero. c. the sodium-potassium pump must cease temporarily. d. all of the membrane gates must be closed at the same time. e. all of these must happen.
Cat scratch disease is caused by
A. Bartonella bacilliformis. B. Bartonella henselae. C. Bartonella quintana. D. Bartonella peliosis. E. Bartonella angiomatosis.