Continue your comparison of electron transport and chemiosmosis i...

Question

Continue your comparison of electron transport and chemiosmosis in mitochondria and chloroplasts. In each case,
a. where do the electrons come from?
b. how do the electrons get their high potential energy?
c. what picks up the electrons at the end of the chain?
d. how is the energy released as electrons are transferred down the electron transport chain used?

Accepted Answer

Hi everyone. Let's look at our next problem. It says the electron transport chain refers to the protein complexes that accept and pass electrons down the chain while pumping protons across the membrane. In the case of aerobic respiration, the final complex in the electron transport chain passes the electrons to form. And we have the answer choices that are four different molecules H 20 c 02, N 20 and CH three. Well, we think about our electron transport chain during aerobic respiration. The final complex passes electrons to the final except er and the final electronic sector is oxygen. And our aerobic respiration can kind of remind us of that oxygen is extremely electro negative, which makes it very good in that role of accepting those electrons, even though they're at a pretty low energy level by the time they've passed through the electron transport chain. So at the end of electron transport chain you have electrons oops electrons combining with some of those protons that are around combining with oxygen to make water. So again, it's saying it passes the electrons to form. And the answer here is water, which is choice A So again, in the case of aerobic respiration, the final complex in electric electron transport chain passes the electrons to form choice a water. See you in the next video

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