Which of the following is not seen in human body?: (A) L-fucose, (B) L-fructose, (C) D-Glucose, (D) D- Fructose
Answer is B. L-fructose is not seen in human body All sugars in our body are D-sugars. All amino acids in the human protein are L-amino acids. But there are exceptions. (L-sugar found in the human body, i.e. L-fucose.) L-Fucose : Methyl pentose Found in glycoproteins e.g. Blood group antigen.