Grocott-stained sections show reticulin and red cells stained black. This most likely is the result of:
a) overimpregnation
b) prolonged oxidation
c) poor deparaffinization
d) inadequate toning
Answer: a) overimpregnation
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In the graph above, at what point in the action potential will the sodium channels be opened?
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A) A
B) B
C) C
D) D
E) E
Studies of a soybean plant (Glycine max) and the bacterium Bradyrhizobium japonicum have shown that the tip of a
root hair curls toward the bacterium in response to ____.
a. a flavonoid released by soybean roots b. nod gene products produced by soybean roots c. nod gene products produced by the bacterium d. nitrogen fixation by the bacterium e. a flavonoid produced by the bacterium
Which animals were the 1st to be genetically modified?
a. Mice b. Monkeys c. Dogs d. Pigs e. Cows
Galagos, lemurs, and lorises are the living members of which of the following mammalian lineages?
a. Strepsirhini b. monotremes c. Rodentia d. Haplorhini e. marsupials