Author Topic: How does a cell reproduce!??  (Read 2264 times)

Offline Greven

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How does a cell reproduce!??
« on: October 12, 2005, 04:04:05 PM »
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???
10010011000001110111110100111011001101100100000110110111000011101011110010110000
011000011000001100010110010111101001110100110010111100101000001000001111001011101
001101001110011011010011100011110100111000011101100100000100110011010011100110110
010110000011100111101001110110111101011101100110000111101001101001110111111011101
01100100000111010011010001100001110111010000010001001000010100001

Offline PurpleYouko

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How does a cell reproduce!??
« Reply #1 on: October 12, 2005, 04:10:34 PM »
I suspect the second option but What do I know? I am just a research chemist.

Seriously I know bugger all about biology
There are 10 kinds of people in the world

Those who understand binary.

and those who don't

:D PY :D

Offline Greven

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How does a cell reproduce!??
« Reply #2 on: October 12, 2005, 04:34:29 PM »
Were is Shvarz when we need HIM!!!!!!!!!!!1
10010011000001110111110100111011001101100100000110110111000011101011110010110000
011000011000001100010110010111101001110100110010111100101000001000001111001011101
001101001110011011010011100011110100111000011101100100000100110011010011100110110
010110000011100111101001110110111101011101100110000111101001101001110111111011101
01100100000111010011010001100001110111010000010001001000010100001

Offline shvarz

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How does a cell reproduce!??
« Reply #3 on: October 12, 2005, 04:39:55 PM »
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.
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Offline Botsareus

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How does a cell reproduce!??
« Reply #4 on: October 12, 2005, 04:40:29 PM »
Graven since you don't reply to my pms , you sayed you had ideas how to make smexe more positively selective, what are they?

Offline Griz

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How does a cell reproduce!??
« Reply #5 on: October 12, 2005, 04:46:07 PM »
you can find answers to almost anything here:
http://www.answers.com/
and how stuff works:
http://www.howstuffworks.com/index.htm

for a start on cell growth ... try:
http://en.wikipedia.org/wiki/Cell_growth

~griz~
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Offline Greven

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How does a cell reproduce!??
« Reply #6 on: October 12, 2005, 04:49:14 PM »
Hey easy Bots! I am still thinking! Give it some time, but it is difficult to find perfect ideas for things you never have seen... Think about that!

Then to Shvarz!
But how???? In DB it is just some sort of "You have 5000 energy, divide now", but what in real bateria!? Please if you have any info, websites, articles, whatever please post them, I really like to learn this, no matter how hard it is!
10010011000001110111110100111011001101100100000110110111000011101011110010110000
011000011000001100010110010111101001110100110010111100101000001000001111001011101
001101001110011011010011100011110100111000011101100100000100110011010011100110110
010110000011100111101001110110111101011101100110000111101001101001110111111011101
01100100000111010011010001100001110111010000010001001000010100001

Offline Numsgil

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How does a cell reproduce!??
« Reply #7 on: October 12, 2005, 05:14:24 PM »
Cell phases are, (I had to cheat with Griz's links, but I knew at one point):

Grow phase -> Reproduce DNA phase -> Divide -> Grow phase...

In DB, the Reproduce DNA phase and Divide phases are combined into one tight little package of 1 cycle.

Which alters the dynamics of our cells slightly, but not terribly.

Offline Greven

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How does a cell reproduce!??
« Reply #8 on: October 12, 2005, 06:14:33 PM »
Thx alot, that will help!
10010011000001110111110100111011001101100100000110110111000011101011110010110000
011000011000001100010110010111101001110100110010111100101000001000001111001011101
001101001110011011010011100011110100111000011101100100000100110011010011100110110
010110000011100111101001110110111101011101100110000111101001101001110111111011101
01100100000111010011010001100001110111010000010001001000010100001

Offline ollj

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