Question:

During which stage in the complete oxidation of glucose are the greatest number of ATP molecules formed from ADP ?

Updated On: Jul 21, 2024
  • Glycolysis
  • Krebs cycle
  • Conversion of pyruvic acid to acetyl CoA
  • Electron transport chain
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The Correct Option is D

Solution and Explanation

The last step of aerobic respiration is the oxidation of reduced coenzymes, i.e.9 NADH2, and FADH2 by molecular oxygen through FAD, ubiquinone, Cyt b, Cyt c, Cyt cp Cyt a and Cyt a3 By oxidation of 1 molecule of NADH2, 3ATP molecules are produced and by oxidation of 1 molecule of FADH7, 2 ATP molecules are produced. In glycolysis 2 ATP molecules are produced from ADP. Further 2NADH2 produced, give 2x3 = 6 ATP, on oxidative phosphorylation. Similarly in Kreb's cycle 2 ATP molecules are produced. So the greatest number of ATP molecules are produced in the electron transport chain.
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Concepts Used:

Respiration in Plants

Respiration in plants is a process that entails the production of energy in plants. This process can simply be described as the intake of Oxygen and the release of Carbon Dioxide as an outcome of the oxidation of complex organic compounds. Though plants do not have any specific organ to balance the process of respiration, their stems, roots, and leaves do this work at a very low rate than other living beings. The process of respiration is very crucial for the plants to sustain the growth of the plant tissues.

This process can be stated as-

\[C_6H_{12}O_6 + 6O_2 → 6CO_2 + 6H_2O + \text{Energy}\]