This one is for the biochemistry of summarizing  glycose metabolism.   a. The first step in the energy metabolism of glucose is  called the ………………............................. Its purpose is the production of  ……………………… and  …………......   b. The second step in the energy metabolism of glucose is called the  Krebs or TCA cycle. Its purpose is the production of   ………………………   c. The third step in the energy production of cells is the ……………………… Its purpose is the production of  ………………………from  NADH2.

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