While we know the role of the electrons in water production, the protons are shuttled back into the matrix and allow ATP sythase to make ATP. An analogy for the last step of the electron transport chain is a fan at the bottom of a staircase.
Simpsons Comics #3 - Krusty the Klown (Bongo, 1994) - NM $9.29. Buy It Now. Up for sale is Simpsons Comics #3 from Bongo circa 1994. The estimated grade is NM. This is an opportunity to own this key issue for a reasonable price. The comic will come bagged and boarded.
Both prices are shown and inevitably the CGC graded comic sells for far more. What caught my attention in this ad was how close in price two of the comics were. The ad features an Avengers #4 (described Fine vs. CGC 7.0). The difference in price was $995 raw vs. $1,311 for the CGC 7.0. Pretty straight forward. The modern comic in the ad was a Lady Mechanika #1 described Near Mint vs. a CGC 9.8.