Nitrogenous waste is excreted from Malpighian tubules mainly in the form of

a. nitrate.
b. ammonia.
c. uric acid.
d. amino acids.
e. urea.


C

Biology & Microbiology

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A particular characteristic of disease-causing Streptococcus is

A. catalase production. B. beta-hemolysis. C. lactic acid production. D. growth at refrigerator temperatures.

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Most of the energy within an ecosystem is lost

a. when organisms disperse. b. when organisms die. c. as a result of metabolism. d. by organisms at the top of the food web. e. by organisms at the bottom of the food web.

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Unlike eukaryotic mRNA, prokaryotic mRNA is polycistronic

Indicate whether the statement is true or false

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During the __________ epoch, the mammals experienced an explosive adaptive radiation

a. Holocene b. Paleocene c. Pleistocene d. Eocene e. Pliocene

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