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eric_ah4 2006-11-11 21:18

s4 bio~

我想問問Selectively permeable 同 Differntialy permeable有咩唔同
可能串錯字


仲有,死在的cell係唔係會將個membrane變做free,可以令molecule自由出入?

P仔 2006-11-11 21:44
1) selectively permeable = differentially permeable
  上wikipedia搵既,因為BIO書只係得differentially permeable
A semipermeable membrane, also termed a selectively permeable membrane, a partially permeable membrane or a differentially permeable membrane, is a membrane which will allow certain molecules or ions to pass through it by diffusion and occasionally specialised "facilitated diffusion".

2) 冇錯!Dead cells係會allow molecules pass through them freely, 所以dead cells are not differentially permeable.

智者 2006-11-11 21:53
我想問問Selectively permeable 同 Differntialy permeable有咩唔同

無唔同

仲有,死在的cell係唔係會將個membrane變做free,可以令molecule自由出入?

個cell爆左咪得囉........

SuNFoReVeR 2006-11-11 23:23
仲有,死在的cell係唔係會將個membrane變做free,可以令molecule自由出入?

因為differentially permeable membrane只會出現0係living cell唔會0係dead cell,而因為d cell俾水煲死or爆左,所以會freely transferable~~~

eric_ah4 2006-11-11 23:35
thx all


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