The following reactions occur during the catabolism of acetyl-SCoA. Succinyl - S

Question

The following reactions occur during the catabolism of acetyl-SCoA. Succinyl - SCoA + GDP + Phosphate (P_1) rightarrow Succinate + CoA - SH + GTP + H_2O Delta G = -0.4 kcal/mol Acetyl - SCoA + Oxaloacetate rightarrow Citrate + CoA - SH Delta G = -8 kcal/mol 1 - Malate + NAD rightarrow Oxaloacetate + NADH + H^+ Delta G = +7 kcal/mol Which is exergonic? Check all that apply. Succinyl - SCoA + GDP + Phosphate (P_1) rightarrow Succinate + CoA - SH + GTP + H_2O Acetyl - SCoA + Oxaloacetate rightarrow Citrate + CoA - SH 1 - Malate + NAD rightarrow Oxaloacetate + NADH + H^+ Which is endergonic? Check all that apply. Succinyl - SCoA + GDP + Phosphate (P) rightarrow Succinate + CoA - SH + GTP + H_2O Acetyl - SCoA + Oxaloacetate rightarrow Citrate + CoA - SH 1 - Malate + NAD rightarrow Oxaloacetate + NADH + H^+ Which reaction produces a phosphate that later yields energy by giving up a phosphate group? Succinyl - SCoA + GDP + Phosphate (P) rightarrow Succinate + CoA - SH

Explanation / Answer

AnsA: The reaction between acetyl coA and oxaloacetate yielding oxaloacetate is exergonic

AnsB: The third reacion between malate and NAD yielding oxaloacetate is endergonic

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