What is the difference between cofactors and coenzymes?
a. cofactors are not necessary for enzyme function, but coenzymes are
b. cofactors can be inorganic or organic, coenzymes are always inorganic
c. cofactors can be inorganic or organic, coenzymes are organic cofactors
d. cofactors are always vitamins, coenzymes are always ions
e. cofactors help with essential metabolic reactions, coenzymes assist with nonessential metabolic reactions
ANSWER: c
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