In: Biology

# In mitochondrial electron transport, what is the direct role of O2?

The role of O2 in electron transport

In mitochondrial electron transport, what is the direct role of O2?

• a)to provide the driving force for the synthesis of ATP from ADP and Pi
• b)to function as the final electron acceptor in the electron transport chain
• c)to oxidize NADH and FADH2 from glycolysis, acetyl CoA formation, and the citric acid cycle
• d)to provide the driving force for the production of a proton gradient

## Solutions

##### Expert Solution

From the given data,

The role of $$\mathrm{O}_{2}$$ in electron transport in mitochondrial electron transport is to function as the final electron acceptor in the electron transport chain. After accepting the final electron oxygen becomes completely reduced into a water molecule. The adjoined picture shows ETC:

Thus, the correct option is to function as the final electron acceptor in the electron transport chain.