[問題] 想問一題生物題(about 呼吸作用)

[rubylll (小太陽)]

in an experiment, mice were fed glucose containing a small amount of

radioactive oxygen. The mice were closely monitored, and in a few minutes

radioactive oxygen atoms showed up in _____.

(A)carbon dioxide

(B)NADH

(C)water

(D)ATP

(E)oxygen gas


A1題庫中文版的答案是WATER
A2題庫英文版的答案是carbon dioxide

所以答案應該是?


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推 Secondier:我覺得選CO2,因為是直接從glucose中分離出去的。
推 senonno1:我記得A1題庫說的是給標定過的glucose吧??如果是這樣的話
→ senonno1:兩個答案沒有衝突啊~
→ rubylll:可是A2的不是也是標定過的glucose嗎?
推 daouz:CO2來自glucose H2O來自電子傳遞的 O + 2e- + 2H+
→ senonno1:抱歉我打錯= =A1上面那題應該是說標定過的O2答案才會是水
→ senonno1:吧~