【評論主題】28. Which of the following binary compounds has two different solid-state structures?(A) NaCl (B) Cs

【評論內容】

ZnS 有兩種不同的固態結構，分別是閃鋅礦（sphalerite）和纖鋅礦（wurtzite）

【評論主題】20. Which of the following amino acids has a positively charged side chain under physiologicalcondit

【評論內容】(A) Alanine → 非極性胺基酸(B) Asparagine → 極性胺基酸，側鏈不帶電荷（中性）(C) Glutamine → 極性胺基酸，側鏈不帶電荷（中性）(D) Aspartate → 極性胺基酸，側鏈帶負電（具有酸性）(E) Arginine → 極性胺基酸，側鏈帶正電（具有鹼性）

【評論主題】28. Which of the following binary compounds has two different solid-state structures?(A) NaCl (B) Cs

【評論內容】

ZnS 有兩種不同的固態結構，分別是閃鋅礦（sphalerite）和纖鋅礦（wurtzite）

【評論主題】20. Which of the following amino acids has a positively charged side chain under physiologicalcondit

【評論內容】(A) Alanine → 非極性胺基酸(B) Asparagine → 極性胺基酸，側鏈不帶電荷（中性）(C) Glutamine → 極性胺基酸，側鏈不帶電荷（中性）(D) Aspartate → 極性胺基酸，側鏈帶負電（具有酸性）(E) Arginine → 極性胺基酸，側鏈帶正電（具有鹼性）