The tropical diseases such as African sleeping sickness, Chagas disease, and leishmaniasis are caused by
A. trypanosomes.
B. phytomastigotes.
C. sporozoans.
D. foraminifera.
E. oomycetes.
Answer: A
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The cell walls of fungi are composed mainly of
a. cellulose. b. lignin. c. chitin. d. pectin. e. protein.
Which structure is the site of the synthesis of proteins that may be exported from the cell?
a. rough ER b. lysosomes c. plasmodesmata d. Golgi vesicles e. tight junctions
According to NFPA, the minimum rest time during rehabilitation is ____ minutes.
a. 20 b. 5 c. 10 d. 15
Which of the following might cause an exponential increase in deer populations across the United States?
A) increase in atmospheric carbon dioxide levels B) reduction in the population of wolves and bobcats C) reduction in parasites that are found in emaciated deer D) improvement in forest soil