Question

Stage 1 Glycolysis occurs in the cytoplasm . The carbon atoms in glucose are converted to two molecules of pyruvate . Two NADH and four ATP form. Since the cell had to invest two ATP to begin the reaction, the net yield is two ATP. Stage 2 The second stage reactions, including the Krebs cycle , occur in the mitochondrion. Overall, the second stage reactions generate eight NADH and two FADH2. The six carbon atoms that originally entered aerobic respiration in molecules of glucose leave the cell as six molecules of CO2 . Stage 3 Electron transfer phosphorylation occurs in the mitochondrion . NADH and FADH2 bring electrons to electron transfer chains. Energy lost by the electrons as they flow through the chains is used to move carbon dioxide across the inner membrane. The resulting gradient means that there are more hydrogen ions in the cytoplasm than in the matrix. Hydrogen ions flow from the area of high concentration to the area of low concentration through ATP synthases. This flow drives the creation of .

          Stage 1

Glycolysis occurs in the cytoplasm . The carbon atoms in glucose are converted to two molecules of pyruvate . Two NADH and four ATP form. Since the cell had to invest two ATP to begin the reaction, the net yield is two ATP.

Stage 2

The second stage reactions, including the Krebs cycle , occur in the mitochondrion. Overall, the second stage reactions generate eight NADH and two FADH2. The six carbon atoms that originally entered aerobic respiration in molecules of glucose leave the cell as six molecules of CO2 .

Stage 3

Electron transfer phosphorylation occurs in the mitochondrion . NADH and FADH2 bring electrons to electron transfer chains. Energy lost by the electrons as they flow through the chains is used to move carbon dioxide across the inner membrane. The resulting gradient means that there are more hydrogen ions in the cytoplasm than in the matrix. Hydrogen ions flow from the area of high concentration to the area of low concentration through ATP synthases. This flow drives the creation of .

Stage 1

Glycolysis occurs in the cytoplasm . The carbon atoms in glucose are converted to two molecules of pyruvate . Two NADH and four ATP form. Since the cell had to invest two ATP to begin the reaction, the net yield is two ATP.

Stage 2

The second stage reactions, including the Krebs cycle , occur in the mitochondrion. Overall, the second stage reactions generate eight NADH and two FADH2. The six carbon atoms that originally entered aerobic respiration in molecules of glucose leave the cell as six molecules of CO2 .

Stage 3

Electron transfer phosphorylation occurs in the mitochondrion . NADH and FADH2 bring electrons to electron transfer chains. Energy lost by the electrons as they flow through the chains is used to move carbon dioxide across the inner membrane. The resulting gradient means that there are more hydrogen ions in the cytoplasm than in the matrix. Hydrogen ions flow from the area of high concentration to the area of low concentration through ATP synthases. This flow drives the creation of .

Added by Joseph B.

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