Squalene is produced by the ____ of sharks
a. kidneys
b. heart
c. livers
d. muscle
e. gall bladder
C
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Macromolecules that are used by most organisms to store hereditary information are called:
A. proteins. B. transfer RNA molecules. C. ribosomal RNA molecules. D. DNA molecules. E. messenger RNA molecules.
In mitosis, chromatids separate and move to the center of the cell during ____________________. What will be an ideal response?
Which best explains photomorphogenesis?
a. the normal developmental process activated when seedlings are exposed to heat b. the normal developmental process activated when seedlings are exposed to light c. the normal developmental process activated when seedlings are exposed to cold d. the normal developmental process activated when seedlings are exposed to salinity
When fermentation occurs in grapes left on the vine, the final product is the ethanol used to make wine. When fermentation occurs in our muscles, the final product is:
a) oxygen. b) 2 lactic acid molecules. c) 2 NADH molecules. d) 2 ATP molecules. e) ethanol as well.