Vitamin D can be synthesized by the body from a derivative of cholesterol. Given this information, predict vitamin D's solubility.
A. Vitamin D is fat soluble.
B. Vitamin D is not soluble in either water or fat.
C. Vitamin D is soluble in both water and fat.
D. Vitamin D is water soluble.
Answer: A
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Based upon today’s molecular evidence, Homo sapiens appear to have originated from:a
Europe. b. Indonesia. c. East Africa. d. South Africa. e. South America.
After a long period of gradual evolution of protein domains, a period of explosive change (the “big
bang”) in protein domain complexity occurred at roughly the same time as the 3 taxonomic domains were undergoing rapid diversification. In which taxonomic domain was this diversification most extensive?
a. Eukarya b. Protoctista c. Archaea d. Animalia e. Bacteria
All of the following statements are TRUE about arteries EXCEPT ________.
Fill in the blank(s) with the appropriate word(s).
Stromatolites are
A. layered rocklike structures formed by some cyanobacteria (blue-green algae). B. the earliest known arthropods. C. found only in rocks of Carboniferous age. D. the earliest known arthropods and found only in rocks of Carboniferous age are correct. E. fossilized coral reefs.