Cellular respiration

Discussion of all aspects of cellular structure, physiology and communication.

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locobw
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Cellular respiration

Post by locobw » Sat Nov 03, 2007 8:05 pm

I have a test over this some time next week and i was wondering if u guys could tell me stuff about cellular respiration
Q)I mean how do cells turn food into oxygen
Q)What is Mitochondria?!..... It doesn't explain it in my book that's why i hate school books because they don't explain stuff thoroughly!!!! :x

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mith
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Post by mith » Sat Nov 03, 2007 10:36 pm

1. cells don't turn food into oxygen.
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Post by locobw » Sun Nov 04, 2007 1:26 am

mith wrote:1. cells don't turn food into oxygen.
First of all it says in my book that the food that you eat is broken down then its turned into a form of energy your cells can use and then one way to do this is with oxygen.

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Post by locobw » Sun Nov 04, 2007 1:27 am

Hey also i'm a kid don't think i'm stupid ....OK!

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mith
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Post by mith » Sun Nov 04, 2007 2:11 am

1.Food is combined with oxygen to release energy. Oxygen is not produced.

And here's a glossary for mitochondria

http://www.biology-online.org/dictionary.asp
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Post by locobw » Sun Nov 04, 2007 6:27 pm

Thanks.... Also my book actually says that it says oxygen is produced :?

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Post by victor » Sun Nov 04, 2007 8:52 pm

maybe the foods don't turn into oxygen but they're turned towards oxygen in aerobic cellular respiration.
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Post by kareena » Thu Nov 08, 2007 5:57 am

See, The food that you consume , gets conveted into a form of energy which is useful for and by the cells. But the cells DONOT convert into energy.
Please understand clearly.

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Post by blcr11 » Thu Nov 08, 2007 4:12 pm

locobw wrote:
mith wrote:1. cells don't turn food into oxygen.
First of all it says in my book that the food that you eat is broken down then its turned into a form of energy your cells can use and then one way to do this is with oxygen.


The breakdown of carbohydrates generates electrons, usually in the form of NADH or NADPH. The final electron acceptor in oxidative respiration is molecular oxygen. Oxygen is consumed, not generated, in the mitochondria. Either the textbook mis-spoke (which wouldn't be the first time that has ever happened), or you misunderstood the textbook. To simplify: food is converted to reducing equivalents (electrons) which is used to fix oygen into water (well, hydrogen peroxide initially, but that quickly converts to water; and "fixing" oxygen means that oxygen is consumed by the conversion process).

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