Of the following, AIDS is usually transferred by:
a. casual contact
b. food
c. water
d. sexual intercourse
e. insect bites
d
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If all individuals in the last remaining population of a particular bird species were all highly related, which type of diversity would be of greatest concern when planning to keep the species from going extinct?
I ) genetic diversity II) species diversity III) ecosystem diversity A) only I B) only II C) only III D) only II and III E) I, II, and III
You are planning to perform some protein-protein interaction studies to identify a receptor for a steroid hormone you have been working on. You start by fractionating the cell. What cell fraction would you want to work with to identify the steroid hormone receptor of interest?
A. The plasma membrane fraction B. The extracellular fraction C. The cytoplasmic fraction D. The mitochondrial fraction E. The ribosomal fraction
The forces of the mantle acting on the crust give way to:
a. ocean basins. b. continental drift. c. magma. d. continental rise.
The typical mushrooms, but not truffles or morels, belong to the
A. imperfect fungi. B. basidiomycetes. C. zygomycetes. D. ascomycetes.