All of the following are methods of prion disease transmission EXCEPT ________.
A. inheritance (genetic)
B. contamination through use of inadequately processed surgical instruments
C. organ or tissue transplantation
D. ingestion of infected tissue
E. inhalation (airborne)
Answer: E
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An animal that is attached to the substrate and cannot move from one place to another is said to be
A. rooted. B. sessile. C. sedentious. D. fixated.
Which of the following conclusions was a results of Mendel's observations?
A.) Organisms that give rise to purebreds are genetically superior. B.) Organisms that have intermediate feature are self-pollinating. C.) Organisms inherit two copies of each gene, one from each parent. D.) Organisms that self-pollinate do not have "either-or" features.
Demographic studies include all of the following except what?
A. sex ratio B. age structure C. growth rates D. measurements of interspecific competition E. mortality and survivorship curves
The most important evidence that Darwin used to develop his theory of natural selection came from ____.
A. the Argentine pampas B. his boyhood neighborhood in England C. the Galápagos Islands D. Australia and New Zealand E. South America