The three boxes in this diagram represent the three major biosynthetic pathways in aerobic respiration.…

The three boxes in this diagram represent the three major biosynthetic pathways in aerobic respiration. Arrows represent net reactants or products
Arrows numbered 4,8 and 12 can all be
  1. $\mathrm{NADH}$
  2. ATP
  3. $\mathrm{H}_2 \mathrm{O}$
  4. $\mathrm{FAD}^{+}$orFADH ${ }_2$

Solution

Pathway $A$ is glycolysis, pathway $B$ is the krebs' cycle and pathway $C$ is oxidative phosphorylation Arrow 1 - ADP or $\mathrm{NAD}^{+}$ Arrow 2 - Pyrunate Arrow 3 - NADH Arrow 4 - ATP Arrow 5 - ADP, $\mathrm{NAD}^{+}$or $\mathrm{FAD}$ Arrow 6 and 7 - $\mathrm{FADH}_2$ and $\mathrm{NADH}$ (either one can be 6 or 7 ) Arrow 8 - ATP or $\mathrm{CO}_2$ Arrow 9 and $10-\mathrm{O}_2$ and ADP (either one can be 9 or 10 ) Arrow 11 and $12-\mathrm{H}_2 \mathrm{O}$ and ATP (either one can be 11 or 12)

Asked in: NEET 2013 (All India)

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