The precursor digestive enzyme secreted by the stomach is ____
a. pepsinogen
b. amylase
c. HCl
d. pepsin
e. gastrin
ANSWER: a
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A metabolic pathway:
a. may build or break down molecules b. generates heat c. can include an electron transfer chain d. may build or break down molecules and can include an electron transfer chain e. all of these
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The driving force behind the evolution of the human mind has been primarily due to pressures stemming from
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