Transpiration occurs in:
a. the atmosphere.
b. terrestrial plants.
c. the ocean.
d. groundwater.
e. bacteria
B
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Prokaryotic cell walls consist of a network of polysaccharide molecules connected by cross-bridges of
A. other polysaccharides. B. lipids. C. peptides. D. ribosomes. E. chromosomal DNA.
Which of the following is true of type 1 diabetes?
1.Insulin levels are near normal. 2.Target cells do not respond to insulin. 3.It is the more common form of diabetes. 4.It is thought to be an autoimmune disease. 5.It usually occurs in middle-aged people.
Which of the following are ways that usable
nitrogen is removed from the soil? a. nitrification b. leaching c. nitrogen fixation d. ammonification e. all of these
In a forest, trees that grow taller receive more sunlight and end up producing more viable seeds. Shorter trees of the same species receive less sunlight and produce few viable seeds. Over time, what type of selection will take place?
A. disruptive selection B. directional selection C. stabilizing selection D. sexual selection E. artificial selection