Water contains two hydrogen atoms bound to one oxygen atom; "H2O" is therefore water's
A. molecular formula.?B. ionic compound.?C. isotope ratio.?D. stochastic isomer.
A
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In the stomach:
a. pepsin converts hydrochloric acid to pepsinogen b. pepsin converts pepsinogen to hydrochloric acid c. hydrochloric acid converts pepsinogen to pepsin d. hydrochloric acid converts pepsin to pepsinogen
The cell wall of fungi is composed of ____________
Fill in the blank with the correct word.
The ________ of the small intestine is/are similar to the ________ of the stomach
A) rugae; Peyer patches B) pyloric sphincter; ileocecal valve C) goblet cells; parietal cells D) intestinal crypts; gastric pits E) villi; pyloric glands
In terrestrial vertebrates, taste receptor cells are clustered into groups known as __________
Fill in the blank with the correct word.