Biochemistry All of the following are true EXCEPT A Absence from the diet of ceain amino acids that are present in most proteins is not deleterious to human health B Tetrahydrobiopterin is involved in tryptophan biosynthesis C Selenocysteine is an essential component of several mammalian proteins D Intermediates of the citric acid cycle and of glycolysis acts as precursors of aspaate, asparagine, glutamate, glutamine, glycine, and serine 💡 Explanation All of the following are true EXCEPT ✓ Correct Answer: B. Tetrahydrobiopterin is involved in tryptophan biosynthesis