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  • Hey Timmy, can u tell me what happens to a carbon atom during photosynthesis?
  • Of course Nancy.
  • During respiration, the stored chemical energy gets changed into ATP. Photosynthesis removes the carbon dioxide and releases the oxygen, but cellular respiration is the opposite because it uses the oxygen in order to release the CO2. So the carbon atoms are released during cellular respiration
  • How about when they are transitioning between photosynthesis and respiration?
  • The carbon atoms would be taken from CO2 in photosynthesis to form glucose then the glucose would enter glycolysis where it would be broken down to two molecules of pyruvate depending on the situation then it might enter the citric acid cycle where it is can be expelled as a CO2 biproduct, although cataplerosis often occurs as many many pathways share metabolites.
  • How about during cellular respiration or fermentation?
  • During cellular respiration the molecule takes in oxygen and glucose. In glycolysis, the six-carbon sugar, glucose, is broken down into two molecules of three-carbon molecule called pyruvate. ... When it is oxidized to carbon dioxide chemical energy is released and captured.
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