Which of the following statements best describes the primary role played by oxygen in cellular respiration? 1.It serves as an acceptor for carbon, forming CO2 in the citric acid cycle. 2.It serves as the final acceptor for electrons from the electron transport chain. 3.It yields energy in the form of ATP as it is passed down the electron transport chain. 4.It oxidizes glucose to form two molecules of pyruvate.

Cellular respiration is the process by which glucose or other organic compounds such as fructose are broken down to generate energy in the form of ATP, that is required to drive cellular or body processes.
Cellular respiration takes place in the presence of oxygen and occurs in three stages, namely; glycolysis, kreb's cycle and electron transport chain. The end products of cellular respiration is energy in the form of ATP, and water and carbon dioxide as a byproduct.
The oxygen consumed during cellular respiration is directly involved in accepting electrons at the end of the electron transport chain

abhishekprakash2625 abhishekprakash2625 · Answer 2 · 2021-10-23T13:14:56+02:00

Answer:

The correct answer is 2- It serves as the final acceptor for electrons from the electron transport chain

Explanation:

The breakdown of glucose in the presence of oxygen to obtain the energy is called cellular respiration.

The breakdown of glucose is done by several steps such as glycolysis, Kreb's cycle, and electron transport chain system.

In an electron transport chain system, the electron is transported to the various electron carrier and finally transferred to the oxygen. Which is released out from the plant during the process called photosynthesis.

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