Relevant Competitive Tests:
In humans and other primates as well as in guinea pigs, this vitamin cannot be synthesized because of the absence of the enzyme L-gulonolactone oxidase: the vitamin is_____________?
A.\tPantothenic acid
B.\tNicotinic acid
C.\tAscorbic acidCorrect Answer
D.\tFolic acid
Correct Option: C.\tAscorbic acid
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