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Question

The overall goal of glycolysis, Krebs’ cycle, and the electron transport system is the formation of


A

sugars

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B

ATP in one large oxidation reaction

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C

ATP in small stepwise units

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D

nucleic acids

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Solution

The correct option is C

ATP in small stepwise units


The correct option is C.

Explanation of correct option

  1. Glycolysis is the process by which glucose is broken down to produce energy.
  2. It produces water, ATP, NADH, and two pyruvate molecules.
  3. The entire process, which takes place in the cytoplasm of a cell, doesn't require oxygen.
  4. The electron transport chain commonly referred to as the oxidative phosphorylation process is made up of four protein complexes that work together to combine redox events to create an electrochemical gradient that leads to the synthesis of ATP.
  5. The Krebs cycle sometimes called the TCA cycle or the citric acid cycle is a series of chemical processes that take place in the mitochondria and are essential for aerobic respiration that provides energy to nearly all living things.
  6. Water and carbon dioxide are produced while oxygen is used.
  7. ATP is created here from ADP.
  8. Pyruvate is converted into three different products by the Krebs cycle: carbon dioxide, a little quantity of ATP, and the reductant molecules NADH and FADH.

Final answer: The overall goal of glycolysis, Krebs’ cycle, and the electron transport system is the formation of ATP in small stepwise units.


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