General > Biology

How does a cell reproduce!??

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Greven:
Just a simple question:

How does a cell/bacteria determine when to reproduce???

Is it determined by a gene or a few (or a million, doesnt matter) that:
"You now have one trillion energy/ATP, reproduce now!!!"
or
Is it a slow progress, were it creates the nessary enzymes all the time, and then a point with enough enzyme it splits into two?

or what???

PurpleYouko:
I suspect the second option but What do I know? I am just a research chemist.

Seriously I know bugger all about biology

Greven:
Were is Shvarz when we need HIM!!!!!!!!!!!1

shvarz:
Sorry, turns out I was logged off and did not see any new topics :)

The decision to divide is one of the most complex ones in cell's life.  There is a huge number of factors involved.  And it depends on the type of cell as well.  Some cells in our body never divide, others divide constantly - it is not a matter of energy supply, it is a matter of what the organism as a whole needs.

If we are talking about single-cell bacteria, like E.coli, then it's a different situation.  When I grow bacteria in rich media, they divide every 40 minutes.  Most of the time is spent on copying and correctly separating DNA.

Botsareus:
Graven since you don't reply to my pms , you sayed you had ideas how to make smexe more positively selective, what are they?

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