Select the incorrectly-matched organism and its primary nitrogenous waste product.
A. mammals-urea
B. birds-uric acid
C. most fish-ammonia
D. insects-ammonia
E. reptiles-uric acid
Answer: D
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a) Aspergillosis b) Coccidioidomycosis c) Pneumocystispneumonia d) Histoplasmosis
What is the fate of metabolites during respiration?
a. They are oxidized completely to carbon dioxide and water. b. They are reduced to from NADH and FADH2. c. They are oxidized completely to form pyruvic acid. d. They are rearranged to form GTP.
In a pond ecosystem, a crayfish feeds on three species of algae. It is in turn preyed upon by one species of fish and a heron. The heron also preys upon the fish. What is the minimum number of food chains in this food web?
A. 2 B. 3 C. 4 D. 5 E. 6
The simplest viruses consist of ________.
A. RNA only B. RNA or DNA in a protein coat covered with lipid envelope C. protein only D. RNA, DNA, and enzymes in a protein coat with a lipid envelope E. RNA or DNA in a protein coat