hce_kmu
111年
普通生物及生化概論
第 80 題
Which of the following statements about the catabolism of free pyrimidines in the human body is CORRECT? A Free cytosine and uracil are not salvaged B Degradation of free cytosine produces $\beta$-alanine, $CO_2$, and $NH_4^+$ C Degradation of free uridine produces $\beta$-aminoisobutyric acid, $CO_2$, and $NH_4^+$ D Free thymine are recycled for synthesizing nucleosides
- A A B C
- B A B D
- C A B
- D A C
- E A C D
思路引導 VIP
請試著比較尿嘧啶 (Uracil) 與胸腺嘧啶 (Thymine) 在分子結構上的主要差異(例如某個官能基的有無),並思考這個結構上的不同,會如何反映在它們最終分解產物的「碳鏈長度」與「名稱前綴」上?