MCQ PracticeMelanin is derived from which of the following amino acid?Subject: BiologyTopic: Human Anatomy And PhysiologyAHistidineBTyrosineCValineDTryptophanCorrect Answer: BPractice QuizBack to MCQsRelated MCQsCurrent flows in a circuit whenEighttenths coulomb passes a point in 4 s. The current in amperes isThe unit of electrical charge is the