Most chemical digestion occurs in the:
a. stomach.
b. ileum.
c. jejunum.
d. duodenum.
e. colon.
d
Biology & Microbiology
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Bases are compounds that do all the following except
a. they bind hydrogen ions. b. they release hydrogen ions. c. they are pH 7 or above. d. they contain more hydroxide ions than hydrogen ions. e. they raise pH.
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__________ neurons detect stimuli. Fill in the blank(s) with the appropriate word(s)
Biology & Microbiology
The hydrogen and oxygen atoms of a water molecule are held together by ________ bonds
A) ionic B) hydrogen C) covalent D) polar
Biology & Microbiology
Compared to life in the water, what was one benefit to a transition to living on land 450 mya?
A. easier to withstand gravity B. easier to find pollinators C. less CO2 D. easier access to water E. more abundant sunlight
Biology & Microbiology