Examine Figure 11-13. Where are the electron carriers of the mitochondrial electron transport chain located—in the matrix, the membrane, or in the crista lumen? As they carry electrons, some of them also deposit protons (H⁺). Are the protons deposited in the matrix or in the crista lumen?

Figure 11-13

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www.m Mitochondrion NADH + H+ FMN FMNH₂ FMN FMNH₂ Fe2Fe-2 2H¹ NAD+ Crista lumen 2H+ 2H+ wow ATP 2H+ Fat2 Ubiquinone H₂ Ubiquinonex cyt box 2H+ FADH₂ 2H+ ADP + P₁ 2H+ FAD cyt-bred cyt ag cyt C₁0x H₂O cyl Cired cyt a cyt Gox cyl Cod 2H+ +1/2 0₂ Matrix