Question

The overall goal of glycolysis, Krebs cycle an electron transport system is the formation of ____________ .

• (A) ATP in small stepwise units
• (B) ATP in one large oxidation reaction
• (C) Sugar
• (D) Nucleic acids

Answer 1

The Correct Option is A

Explanation:
The overall goal of glycolysis, Krebs cycle an electron transport system is the formation of ATP in small stepwise units.In Krebs cycle, the Acetyl CoA that is formed in the oxidative decarboxylation step reacts with oxaloacetate to form citric acid - this leads to the beginning of Krebs cycle. The Krebs cycle produces $34$molecules of ATP and NADH. This biochemical reaction takes place in the matrix of mitochondria.The NADH that is produced in the glycolysis, oxidative decarboxylation and Krebs cycle, enters the electron transport chain that takes place in the inner mitochondrial membrane and produces ATP by ATP synthase.So, we can say that the overall goal of glycolysis, Krebs cycle and the electron transport system is the formation of ATP by small stepwise reactions.Hence, the correct option is (A).