Tungsten is a reagent used in the
A) acid-fast stain.
B) electron microscopy stain.
C) endospore stain.
D) flagellar stain.
E) negative stain.
B
Bloom's Taxonomy: Knowledge
Section: Staining
Learning Outcome: 4.16
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A pied kingfisher in its first year of life helps in the feeding of three full siblings who would not have made it without the helper's efforts
In this first year the bird does not raise any of its own offspring. In the second year of its life the pied kingfisher mates and raises two of its own offspring. After the first two years, what is the inclusive fitness of the pied kingfisher? A) 0.75 B) 1.50 C) 2.50 D) 3.00
Which of the following bacteria have an innate resistance to penicillin?
A. S. aureus B. S. epidermidis C. M. luteus D. Mycoplasma
The first United States Marine Biological Laboratory was started by:
a. Charles Wyville Thomson. b. Sir Alistair Hardy. c. Charles Darwin. d. Louis Agassiz. e. Alexander Agassiz.
If the small groups of Viking explorers in Greenland and North America had survived and given rise to new populations, such a scenario would be an example of
A. genetic drift among the original Viking explorers. B. gene flow from continent to continent. C. the founder effect. D. the bottleneck effect. E. directional selection.