Advertisements
Advertisements
Question
Oxygen is critical for aerobic respiration. Explain its role with respect to ETS.
Solution
In the Electron Transport System, NADH + H+ and FADH2 are energy carriers to produce ATP. Electrons are transferred through a sequence of events and finally to the oxygen molecule. The oxygen molecule works like the final acceptor of hydrogen to form water molecules. Although oxygen comes at the end, it is critical for aerobic respiration. Oxidative phosphorylation involves a chain of events in which electrons are transferred through an electron gradient. Phosphorylation is like the flow of water through a tap. Until the tap is not open to allow the first drop of water, subsequent drops of water cannot flow down.
Oxygen acting as a hydrogen acceptor is like a receptacle collecting the first electron so.
It is possible to maintain the subsequent flow of electrons through ETS. Hence, oxygen is necessary to create a gradient through which electrons can be transferred passively.
APPEARS IN
RELATED QUESTIONS
Explain ETS.
What is oxidative phosphorylation?
Give the diagrammatic representation of ETS
Synthesis of Adenosine triphosphate during electron transfer system refers to ______.
The ultimate electron acceptor of respiration in an aerobic organisms is ______.
Match the following and choose the correct option from those given below.
| Column I | Column II |
| A. Molecular oxygen | i. α - Ketoglutaric acid |
| B. Electron acceptor | ii. hydrogen acceptor |
| C. Pyruvate dehydrogenase | iii. cytochrome C |
| D. Decarboxylation | iv. acetyl Co A |
The end product of oxidative phosphorylation is ______.
Oxygen is an essential requirement for aerobic respiration but it enters the respiratory process at the end? Discuss.
Respiration is an energy releasing and enzymatically controlled catabolic process which involves a step-wise oxidative breakdown of organic substances inside living cells.
In this statement about respiration explain the meaning of 1) Step-wise oxidative breakdown, and 2) Organic substances (used as substrates).
Given below is a diagram showing ATP synthesis during aerobic respiration, replace the symbols A, B, C, D and E by appropriate terms given in the box.
F1, Particle, Pi, 2H+, Inner mitochondrial membrane, ATP, Fo particle, ADP
