You have added a drug that prevents the transfer of electrons from the electron transport chain...

You have added a drug that prevents the transfer of electrons from the electron transport chain of cellular respiration to O₂. What would happen to the level of activity in the electron transport chain. Explain your reasoning.

Expert Solution

Oxygen accept the electron from the ETC in the IV complex. When oxygen accept electron it react with hydrogen to form water .

For example cyanide block the electron transfer in the complex 4. As a result the two proton are not pumped into the membrane space from the matrix through complex 4. No water formation occur due to blockage of the pathway between oxygen and hydrogen.

Total 8 proton from NADH and 4 proton from FADH2 are transported to generate a protein gradient across the membrane.

Four proton constitute one ATP.

2ATP from NADH and 1 from FADH2.

Total 3 ATP formed whereas In normal electron transport chain without inhibitor produces 4ATP.

gladiator answered 2 years ago

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