問題詳情
24. The chemical compound “ethylenediaminetetraacetic acid, EDTA” is a chelating agent tocoordinate several metallic ions, such as ferric, cupper, and calcium ions. In the living organism,which amino acid is usually used as a chelating agent?
(A) Cysteine
(B) Glycine
(C) Leucine
(D) Tryptophan
(E) Proline
參考答案