How many amino acids are positively charged at $pH = 7$ .
(i) Asparagine; (ii) Valine; (iii) Aspartic acid; (iv) Glycine; (v) Lysine; (vi) Glutamine;
(vii) Glutamic acid; (viii) Arginine; (ix) Methionine

Question

How many amino acids are positively charged at $pH = 7$ .

(i) Asparagine; (ii) Valine; (iii) Aspartic acid; (iv) Glycine; (v) Lysine; (vi) Glutamine;

(vii) Glutamic acid; (viii) Arginine; (ix) Methionine

TestHub · Accepted Answer

At p H = 7 , amino acids with basic side chains (Lysine, Arginine) are positively charged. Lysine (v) and Arginine (viii) are basic amino acids. Therefore, 2 amino acids are positively charged. The correct answer should be 2.

Chemistry - Biomolecules Question with Solution | TestHub

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