Which vitamin plays a critical coenzyme role in redox reactions of carbohydrate and protein metabolism and whose deficiency leads to mucocutaneous lesions and corneal changes?
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Correct answer: Vitamin B2 (riboflavin)
Riboflavin (vitamin B2) serves as coenzyme in numerous redox reactions; deficiency impairs metabolic pathways and leads to mucocutaneous lesions, cheilosis, stomatitis and corneal vascularization.
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