2007-12-17 11:00:24 · 3 answers · asked by cedarboy94 1 in Science & Mathematics ➔ Biology
To oxidize glucose, you need a terminal electron acceptor (TEA). If that isn't present, you can't oxidize all the glucose. If the glucose isn't completely oxidized, then you will have less energy to produce ATP to drive the cell's activities. ATP also has to be used right away - it can't be stored.
2007-12-17 11:12:40 · answer #1 · answered by ¿ /\/ 馬 ? 7 · 0⤊ 0⤋
Glucose oxidation is limited by enzymes called "rate limiting enzymes" - such as PFK 1,2 (in glycolysis). There are a few of them.
Also if you are missing some of the intermediates within the Kreb's cycle or in the Electron Transport Chain (ETC) then oxidation and ATP production will also be limited.
If there is TOO MUCH glucose, then glycolysis is limited and those cells shifts gears to store the excess glucose instead of using it as an energy source. If the body is relying on Ketones as its energy source (diabetics know this one) then glucose oxidation will be limited.
2007-12-17 19:16:57 · answer #2 · answered by javier 4 · 0⤊ 0⤋
yes if it wasen't then we wouden't run out of energy
2007-12-17 19:03:00 · answer #3 · answered by (-.-) 3 · 0⤊ 0⤋