A) \[{{O}_{2}}\]
B) \[{{H}_{2}}\]
C) \[C{{O}_{2}}\]
D) NADH
Correct Answer: A
Solution :
Electron transport chain takes place in inner mitochondrial membrane and consist of flavins, ubiquinone cytochromes and oxygen as electron carriers. Sequence of electron transport: \[\begin{align} & NAD{{H}_{2}}\to FAD\to Co-Q\to \\ & Cytochrome-b\to Cyt-{{c}_{1}}\to CYt-a \\ & \,\,\,\,\,\,\,\,\,\,\,\to Cyt-{{a}_{3}}\to {{O}_{2}} \\ \end{align}\] So, oxygen is the last electron acceptor in respiration.
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