生物學小問題！生物學小問題！

Question

一、以下哪個 solution has the best buffer capacity？
1) ＮａＨ２ＰＯ４／ＮａＨＰＯ４
2) ＮａＨＣＯ３／ＮＨ４ＯＨ
3) ＮａＨ２ＰＯ４／Ｈ２ＣＯ３
4) ＮａＯＨ／ＣＨ３ＣＯＯＨ
　
二、所有的真核細胞有以下哪個？
1) 都有plasma membrane, cytoplasm, and cell wall
2) 包含flagella with the 9+2 structure

三、respiratory chain is true？
1) It regenerates oxidizing agents for glycolysis and the citric acid cycle
2) It operates simultaneously with fermentation

幫我解釋一下為什麼呢？

Answer 1

1.這題問你哪一個是最好的緩衝溶液
答案當然是1囉~~~因為H2PO4(-)和HPO4(2-)才是共軛酸鹼對!
其他均不是!
2.當然是2拉~~~第一個選項是說都有細胞膜 細胞質 和細胞壁
第二個是說 包含鞭毛中具有9+2中心粒的構造
3.題目說 關於呼吸作用哪一個是真的
答案當然是1囉 第一選項是說 提供氧化劑給檸檬酸循環的醣解作用
第二選項是說 同時伴隨著發酵的發生

Answer 2

good answer.

Answer 3

umm... i have answers in mind that I would guess. But i can't give you an explicit explanation why (and some are done by process of elimination).

2006-04-08 07:21:25 補充：
So I'll answer it later if nobody else can give a good answer.