病毒和細菌有何分別

[ref=416501]DIH[/ref]  在 2005-11-9 10:27 PM 發表:
Having no nuclei does NOT mean they are not organisms.
Prokaryotic cells (e.g. Bacteria, Archea) have no nuclei either.
Or, to be more precise, they have no membrane-bound nuclei. ...

Prokaryotaes have no well-defined nuclei only,it doesn't mean that they don't have nuclei.

[ref=417283]cheungtszfung[/ref]  在 2005-11-10 07:17 PM 發表:


Prokaryotaes have no well-defined nuclei only,it doesn't mean that they don't have nuclei.

Thanks for your attention, actually I have said that they have "no membrane-bound nuclei" in the very next sentence, which means the same as "no well-defined nuclei" - the nuclear membrane is something to "define" the nucleus. It's my fault that I haven't investigated the wordings seriously.

[ref=415831]arthur[/ref]  在 2005-11-8 11:41 PM 發表:

病毒係有寄主之下係生物，但冇寄主就唔知lu。
而細菌就一定係生物。

I wanna ask, what is the function of host?
If host serves to provide nutrients for the virus,
then why does the virus tend to kill the host?
It seemed to me that they would lost their "shelter" if they killed the host,
and it was unwise for bateria to do so.

Thx