A massive immigration of Irish to the United States in the mid-19th century because of a failure of the Irish potato crop was most likely caused by what protist?

A. Phytophora infestans
B. Giardia lamblia
C. Trichomonas vaginalis
D. Plasmodiuim falciparum
E. Pfiesteria shumwayae


Answer: A

Biology & Microbiology

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RNA is a ______________

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In a female human cell, what would be the effect on X inactivation if a mutation occurred in the Xist gene making it nonfunctional?

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Which of the following bacterial genera plays an important role in environmental nitrogen cycles?

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