Hey Guys!
If a question asks to describe the electron transport chain, would this be a good answer?
- Loaded acceptor molecules(NADH and FADH2) are brought to the cytochromes where they are oxidised.
- The energy released is used to form a concentration gradient in which H+ protons in the outer compartment are in higher concentration than the mitochondrial matrix.
- The H+ protons go down the concentration and re-enter the mitochondrial matrix through ATP synthase producing 32-34 ATP.
- The H+ protons are then accepted by O2 to produce H2O.
i just feel like its too long to be an answer, especially under time restrictions. However, i didn't like the VCAA answer in the 2008 exam. So could someone please tell me if i need to cut anything out or if the examiners would hesitate to give me marks anywhere?
Thanks a million!!
Hey!
Okay so an acceptable answer for ETC can definitely be condensed further. So within the electron transport chain:
* Electrons are passed through cytochromes, releasing energy to form 32-34 ATP.
* Oxygen (final-acceptor molecule) accepts the electron, and combines with H+ ions to form water.
That is more than enough, and besides, the new study design really only needs you to know inputs/outputs/locations.