Which portal of exit will a bloodborne pathogen likely use?
A) GI mucosa
B) ocular
C) respiratory mucosa
D) skin
E) parenteral
Answer: E
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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. Trichomonas vaginalis B. Plasmodiuim falciparum C. Phytophora infestans D. Giardia lamblia E. Pfiesteria shumwayae
The kidneys are important homeostatic organs, contributing to maintenance of all of the following EXCEPT
A. ion concentration of extracellular fluids. B. blood pressure. C. destruction of worn-out red blood cells. D. blood volume. E. blood pH.
Which of the following acts enzymatically rather
than hormonally? a. cholecystokinin b. pepsin c. secretin d. gastrin e. leptin
According to the logistic growth model, as N approaches K,
A. growth rate increases. B. growth rate stabilizes. C. there will be less competition for resources. D. growth rate begins to slow.