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BIOL4 Glycolysis Question

I'm studying AQA Biology, A2, Biol4 (unit 4).

My question is: seeing as triose phosphate has only 1 phosphate group attached, how is it that 2 ATP molecules are formed for every 1 triose phosphate molecule by substrate-level phosphorylation? Are both molecules even formed by substrate-level phosphorylation?

Substrate level phosphorylation is when a phosphate group on a donor molecule is transferred to ADP to make ATP. If two ATP molecules are made, two phosphate groups are transferred. Triose phosphate has only 1 phosphate group (I believe?) so it can't donate two phosphate groups. Help?

triose phosphate isnt anything to do with glycolysis

OP

Original post by george123m

triose phosphate isnt anything to do with glycolysis

http://www.biologymad.com/PhotosynResp/Photos17.gif

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