Which of the following protists causes a sexually transmitted disease that can result in infertility?

a. Trichomonas vaginalis
b. Trypanosoma cruzi
c. Giardia lamblia
d. Euglena gracilis


a

Biology & Microbiology

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Which of the following would be considered an example of bioremediation?

A) adding nitrogen-fixing microorganisms to a degraded ecosystem to increase nitrogen availability B) using a bulldozer to regrade a strip mine C) dredging a river bottom to remove contaminated sediments D) reconfiguring the channel of a river E) adding seeds of a chromium-accumulating plant to soil contaminated by chromium

Biology & Microbiology

All of the following are cytokines except

A) interleukins. B) interferons. C) tumor necrosis factor. D) collectins.

Biology & Microbiology

Which of the following cells can serve as antigen-presenting cells?

a. macrophages, basophils, and B cells b. dendritic cells, B cells, and T cells c. macrophages, dendritic cells, and B cells d. B cells, T cells, and basophils e. macrophages, T cells, and basophils

Biology & Microbiology

All of the following are insects EXCEPT:

a. ticks. b. bugs. c. lice. d. fleas. e. butterflies.

Biology & Microbiology