Which of the following is (are)true regarding vitamins?
(I)They are essential organic molecules an organism is unable to synthesize.
(II)Some water soluble vitamins mediate electron-transfer reactions.
(III)In humans,the water soluble vitamins converted into organic coenzymes.
IV)In humans,the fat soluble vitamins mediate group transfer reactions.
A)I,II,III,IV
B)I,II,III
C)II,III,IV
D)I only
E)II,IV

Question

Quizplus · Accepted Answer

Option I is true, as vitamins are essential organic molecules that are required by an organism but are unable to be synthesized by the organism. Option II is also true, as some water-soluble vitamins such as vitamin C and the B vitamins mediate electron-transfer reactions. Option III is true, as water-soluble vitamins are typically converted into organic coenzymes in humans, which function as enzyme helpers. Option IV is false, as fat-soluble vitamins are typically involved in functions such as hormone synthesis and regulation, and not group transfer reactions.

Which of the Following Is (Are)true Regarding Vitamins