請教幾各生物問題 - 考試

By Annie
at 2010-11-26T23:19
at 2010-11-26T23:19
Table of Contents
1.在光合系統中的PSI及PSII又稱P700及P680的原因?
以PSI而言,沈老大的講義是寫說因為PSI中的反應中心裡葉綠素a的最大吸收值
在700nm,所以PSI 又叫P700;我的疑惑是葉綠素a的最大吸收值明明就是在藍紫
光區裡再來才是紅光區(650nm),在怎樣都不是700nm,那課文中的敘述到底是怎
麼一回事呢?
以PSII而言,沈老大的講義是寫說因為PSII中的反應中心裡葉綠素a的最大吸收值
在680nm,所以PSII 又叫P680;我的疑惑是葉綠素a的最大吸收值明明就是在藍紫
光區裡再來才是紅光區(650nm),在怎樣都不是680nm,那課文中的敘述到底是怎
麼一回事呢?
2.C4植物的C3 pathway在維管束鞘細胞的stroma,而C4 pathway在葉肉細胞;哪請
問一下C4植物的葉肉細胞有葉綠體嗎?沈老大的講義並沒有在C4植物葉肉細胞的
圖裡標註,所以才有此一問^^~,而且既然C3 pathway在維管束鞘細胞的stroma那
C4植物的葉肉細胞似乎不需要有葉綠體吧~
3.之前有請教過說光合系統中c.p與n.c.p的演化順序,結果是c.p早於n.c.p,請問理
由是?
謝謝大家囉^^
--
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