Question

Outline the principal events and outcomes of the Krebs Cycle. Explain what happens in the electron transport chain. PLEASE HELP... would be greatly appreciated thank you.

Answer 1

Check this:
http://en.wikipedia.org/wiki/Krebs_cycle

Answer 2

still kind of confusing ...

Answer 3

What confusions?

Answer 4

all the steps with the what all binds and oxidizes etc.

Answer 5

one thing that helped me understand the election transport chain is to remember these reactions are just electrons being passed from a high energy state to a low energy state all the way down. It is like a waterfall, you start with NADH or FADH2, with their electrons like the water at the top of the waterfall, and these electrons are grabbed by a big molecule (Complex I), because that is the way the world works, the electrons like to "fall" or transfer to complex I because they will then be in a lower energy state, just like water likes to fall down, releasing it's energy as it falls. The electron fall to Complex I and fall again to CoQ, and this fall powers complex I structure to turn, just like water turns a water wheel when falling, and this turning pumps protons via Complex I. These protons set up another "waterfall", this time of protons not electrons, and these protons fall through Complex V, causing it to turn (literally), this turning motions provides energy to make ATP. This ATP is another waterfall, that helps other things turn, and so on....goes for everything. Just like the waterfall turning a turbine 50 miles away at your local powerplant turns a wheel there, that pumps electrons to your house to turn little wheels on the clock on your wall that tells you not to waste too much time remembering silly details like the enzymes of the Kreb cycle, unless your are being graded on it I guess.