bio多問

L.K.

withdrawal reflex唔係唔會經過association neurone嫁咩



the withdraeal reflux of the arm點解係5,3,4?



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係唔係所有hormonal都係蛋白質

or only insulin?

glucagon係唔係?


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99ce 2c


唔洗睇問題都答到

ans: on day 1,the air temperature was higher than tje body temperature


Heatfrom the body could not be lost to the environmental by conduction,convection and radiation


WHY radiation都係

咁體溫高過氣溫有冇radiation?
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圖1點解右邊多D auxin

圖2邊到多D??



[ 本帖最後由 L.K. 於 31-3-2008 00:05 編輯 ]

Puppet

Knee jerk先冇
唔通係4,3,5?

Insulin 同glucagon係protein hormones
Hormones可以係lipid e.g. oestrogen

above |0|, 一直都有radiation
只係睇heat gain/loss

圖1 右多, 生向左邊的光
不要問右多的機制
圖2 一樣多

芒果熙∼＊

原帖由 L.K. 於 31-3-2008 12:00 AM 發表
withdrawal reflex唔係唔會經過association neurone嫁咩


202106
the withdraeal reflux of the arm點解係5,3,4?



---------------------------------------------------------------------------------- ...

5,3,4 岩呀...
你睇番個圖...
5唔經3  點跳去4...
唔係全部reflex都唔使association neurone嫁...

hormones方面  大部份係由protein組成
仲有d係其他野組成  e.g.  fat

好似話..只要有溫度既野都會有radiation  <<(唔肯定..好似physics講既..)
但係當你radiation慢慢地散左熱之後
身體又從conduction及convection吸番熱..
所以要靠出汗  好快地靠吸取latent heat 黎散熱..  (尼個真係唔太肯定..)

auxin果個..好似係兩幅圖都會向左生...
睇bio書講...太陽光好似係將auxin唔知打散定分解..
並唔係好似老師講既將auxin推向黑暗面  <<(佢地咁樣講  我地會易明d掛..?)
左邊果幅  平時已經知會係右邊多d  唔使解..
右邊果幅...plumule左邊向陽光果邊
因為有unilateral light的關係
左邊的auxin被陽光分解  而右邊的auxin冇被分解
而且mica plate係打直放  而唔係打橫放
因此  auxin由於gravitational force而向下走的現象並無被阻止
左邊的auxin concentration比右邊低
當去到region of elongation的時候
higher concentration of auxin stimulates growth of plumule..
所以會向左邊生..
但係如果塊mica plate係打橫放的話...plumule就唔會轉(mica plate橫放黑暗面)
因為auxin被mica plate頂住左  落唔到去region of elongation
發揮唔到功效  所以唔會有轉彎的情況出現..

piyopiyo

原帖由 芒果熙∼＊ 於 31-3-2008 09:35 發表


5,3,4 岩呀...
你睇番個圖...
5唔經3  點跳去4...
唔係全部reflex都唔使association neurone嫁...

hormones方面  大部份係由protein組成
仲有d係其他野組成  e.g.  fat

好似話..只要有溫度既野都會有r ...

For pt 3, no...
air temp > body temp... radiation 係energy gain...大家都有放radiation,但四圍的環境更熱...總energy係gain左...
因此這裡radiation唔係散熱,但從convection ,conduction吸番,而係由頭到尾都係從果3樣吸熱

For pt 4...
of coz only the one on the right grow towards the left...mica plate係唔比auxin過...

Actually,the theories that sunlight decomposes auxin are not confirmed...so we cant say it is destroyed...but we can say that auxin move away from sunlight only...
and i dun think it is really destroyed...what if there is light from all direction...all auxins would be destroyed?[[tk_02]]

[ 本帖最後由 piyopiyo 於 31-3-2008 09:52 編輯 ]

芒果熙∼＊

原帖由 piyopiyo 於 31-3-2008 09:40 AM 發表

For pt 3, no...
air temp > body temp... radiation 係energy gain...大家都有放radiation,但四圍的環境更熱...總energy係gain左...
因此這裡radiation唔係散熱,但從convection ,conduction吸番,而係由頭到尾都 ...

auxin果題兩條都會bend嫁...
我之前做pp..(好似係05..)
有做過一條咁既野...
做果陣已經覺得兩條都bend..
但係阿哥mark個ans係只有左邊bend(好似)
之後覺得怪怪地就上網check..
結果個ans係兩條都bend

piyopiyo

原帖由 芒果熙∼＊ 於 31-3-2008 09:56 發表


auxin果題兩條都會bend嫁...
我之前做pp..(好似係05..)
有做過一條咁既野...
做果陣已經覺得兩條都bend..
但係阿哥mark個ans係只有左邊bend(好似)
之後覺得怪怪地就上網check..
結果個ans係兩條都bend

no,there are 2 theories...just depends which one u follow...both can be ans
unfortunately,in CE lv,HKEAA follows the auxins move away form light theory[[tk_02]]
ur pt is valid,but if u say that to a CEer,u will kill him[[tk_02]]

[ 本帖最後由 piyopiyo 於 31-3-2008 10:18 編輯 ]

L.K.

咁即係bend唔bend=.=
[[tk_30]]

piyopiyo

原帖由 L.K. 於 31-3-2008 10:59 發表
咁即係bend唔bend=.=
[[tk_30]]

both can be correct as the 2 theories are not confirmed...

but in CE,,,u should say it doesn't bend

芒果熙∼＊

但係我之前做pp 好似係03年...
去yahoo知識搵ans...
個ans係話mica打直放的時候會bend....

L.K.

03年冇.....
paper1定2?