[普生] 請問一下

[smallmin (小名)]

1. In the course of evolution of eukaryotic cell,some mitochondrial DNA was
   transferred to?
a. the host cell's chloroplast
b. bacterical cell
c. the host cell's nucleus
d. the host cell's plasma membrane
e. a plasmid

2. A plant that is self-incompatiable has a genotype of S5S9 for the S-locus.
   It receives pollen from a plant that is S3S9. Which of the following is
   most likely to occur?
a. all of the pollen will germinate, forming pollen tubes
b. about half of the pollen will generate
c. none of the pollen will generate
d. fertilization will occur in about half of the flower of the pollinated
   plants
e. pollen from the S3S9 plant will secrete ribonuclease that destorys
   epidermal cells of the S5S9 stigma

3. Which element is always existing as a freeion ion and not conjugated with
   any other organic molecules?
a. Ca   b. K    c. P    d.Mg    e.Mn

--

你若不想做，會找到一個藉口；你若想做，會找到一個方法!

--
※ 發信站: 批踢踢實業坊(ptt.cc) 
◆ From: 61.225.202.180
推 fierybear:bbb吧  如果是單選的話
推 fierybear:第三題我不確定喔
> -------------------------------------------------------------------------- <

作者: hurryken (轉學毀滅倒數) 看板: TransBioChem
標題: Re: [普生] 請問一下
時間: Wed Apr 27 23:30:44 2005

補充一下解答  解錯方向請不要痛罵謝謝^^"



※ 引述《smallmin (小名)》之銘言：
: 1. In the course of evolution of eukaryotic cell,some mitochondrial DNA was
:    transferred to?
: a. the host cell's chloroplast
: b. bacterical cell
: c. the host cell's nucleus
: d. the host cell's plasma membrane
: e. a plasmid

真核生物的DNA序列跟粒線體的DNA序列造出來的蛋白質為什麼會不一樣呢?
這令人納悶真核生物跟粒線體的DNA起源是不是相同的!

馬上聯想到的就是在演化啟源那部份一開始有提到的內共生假說 細菌在原生質膜摺疊
以後不小心吞下了粒線體  而後可能又不小心吞下葉綠體 逐漸演變成現在的光合自營
真核生物!! 所以我覺得答案是(B)

: 2. A plant that is self-incompatiable has a genotype of S5S9 for the S-locus.
:    It receives pollen from a plant that is S3S9. Which of the following is
:    most likely to occur?
: a. all of the pollen will germinate, forming pollen tubes
: b. about half of the pollen will generate
: c. none of the pollen will generate
: d. fertilization will occur in about half of the flower of the pollinated
:    plants
: e. pollen from the S3S9 plant will secrete ribonuclease that destorys
:    epidermal cells of the S5S9 stigma


我在想說你是不是看黃志清的書 因為我也是看黃志清的書的說 但是上面沒有提到這個
建議你回去翻CAMPBELL 我也是回去翻才知道有這個的

大概說一下  就是植物有防衛同一株的配子可以互相結合的機制 有這種機制的
植物叫"self-incompatiable"的植物

題目問你一個S5S9 跟一個S3S9結合會怎樣?

解法是 因為S9是相同的 我記得是後來引發植物生理反應無法進入與卵核結合
但是S5跟S3不同所以可以  答案是(B) 一半


: 3. Which element is always existing as a freeion ion and not conjugated with
:    any other organic molecules?
: a. Ca   b. K    c. P    d.Mg    e.Mn

以更正為正解  真不虧是中央的><

推 mtdas:free ion → K
推 hurryken:對喔 MN好像不是FREE ION
→ mtdas:Ca → Calmodulin, Calcium pectate, ...
→ mtdas:Mg → chlorophyll, rubisco, ...
→ mtdas:Mn → decarboxylase, dehydrogenase, ...
※ 編輯: hurryken        來自: 220.135.118.165      (04/28 00:24)
推 mtdas:不敢當啦 :P
推 fierybear:噗...我第三題猜對了  好運希望不要現在用完.
推 hurryken:希望好運可以用在12億大樂透 XD
推 ayabbe:塊肯金..要是真的你中了,你也就不會想轉學啦