沈浩生物A2題庫 細胞呼吸 - 考試
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By Quanna
at 2011-01-27T17:02
at 2011-01-27T17:02
Table of Contents
※ 引述《puree11508 (新的目標!)》之銘言:
哈囉大家好!
我也想問幾題A2題庫的問題
p.72 第55題
Which of the following statements provides the best explanation for why
the oxidation of organic compounds by O2 yields so much energy?
選項中A B 比較有可能
(A) The oxygen atom has a higher affinity for electrons than the carbon atom.
(B) The reaction has a very negative free energy change
答案是 A 因為氧的吸引使ETC可以完成並釋出大量ATP 沒錯
不過B 似乎也沒錯? 因為負的自由能是釋能反應
p.76 第78題
Which part of the cellular catabolism of glucose requires O2 and produce CO2?
答案是 TCA cycle 跟 ETC
不過ETC 應該沒有產生CO2吧?!
.......推文好麻煩 直接解
如題....ETC是需氧 產生水
但是.... TCA是丟acetyl-CoA 產生 CO2 那答案呼之欲出了吧??
答案是 都要選阿-o-
p.78 第 95題
If significant amounts of materials are removed from TCA cycle to produce
amino acid for protein synthesis , which of the following will result?
(A)Less ATP will be produced by the cell
(B)Less CO2 will be produced by the cell
(C)The four-carbon compound that combines with acetyl-CoA will give to
be made by some other process.
我想問老師上課不是說過protein 去胺後進入 細胞呼吸是不可逆的嗎?(還是我記錯啦?)
另外C選項是說 oxaloacetate會另外被其他路徑合成嗎? 是的話是什麼呢?
謝謝唷!!:)
我用生化的角度來說..... OAA可以合成得的東西太多....例如糖質新生會用到外
在糖尿病病人或飢餓的人 OAA會被拿去合成 ketone body而來提供能量
轉胺後 雖然不可逆 但是依據情況 TCA其他的中間物還是可以拿去合成AA的
以上 有錯請鞭打我 虛心受教嚕
嗯嗯
--
哈囉大家好!
我也想問幾題A2題庫的問題
p.72 第55題
Which of the following statements provides the best explanation for why
the oxidation of organic compounds by O2 yields so much energy?
選項中A B 比較有可能
(A) The oxygen atom has a higher affinity for electrons than the carbon atom.
(B) The reaction has a very negative free energy change
答案是 A 因為氧的吸引使ETC可以完成並釋出大量ATP 沒錯
不過B 似乎也沒錯? 因為負的自由能是釋能反應
p.76 第78題
Which part of the cellular catabolism of glucose requires O2 and produce CO2?
答案是 TCA cycle 跟 ETC
不過ETC 應該沒有產生CO2吧?!
.......推文好麻煩 直接解
如題....ETC是需氧 產生水
但是.... TCA是丟acetyl-CoA 產生 CO2 那答案呼之欲出了吧??
答案是 都要選阿-o-
p.78 第 95題
If significant amounts of materials are removed from TCA cycle to produce
amino acid for protein synthesis , which of the following will result?
(A)Less ATP will be produced by the cell
(B)Less CO2 will be produced by the cell
(C)The four-carbon compound that combines with acetyl-CoA will give to
be made by some other process.
我想問老師上課不是說過protein 去胺後進入 細胞呼吸是不可逆的嗎?(還是我記錯啦?)
另外C選項是說 oxaloacetate會另外被其他路徑合成嗎? 是的話是什麼呢?
謝謝唷!!:)
我用生化的角度來說..... OAA可以合成得的東西太多....例如糖質新生會用到外
在糖尿病病人或飢餓的人 OAA會被拿去合成 ketone body而來提供能量
轉胺後 雖然不可逆 但是依據情況 TCA其他的中間物還是可以拿去合成AA的
以上 有錯請鞭打我 虛心受教嚕
嗯嗯
--
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考試
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