Basic amino acids are the following:: (A) Aspaate and glutamate Serine and glycine, (B) Serine and glycine, (C) Lysine and arginine, (D) None of the above
Answer is C. Basic amino acid consists of those amino acids which have one 'COOH' group and 2 'NH2' gps. Their side chains accept protons. Basic Amino acids include Arginine, Lysine and Histidine. Ref: Textbook of Biochemistry By DM Vasudevan 3rd Edition, Page 12 ; Biochemistry By Mary K. Campbell, Shawn O. Farrell, Page 70 ; Harper's Biochemistry, 24th Edition, Page 29 and 25th Edition, Page 29