Assemble the components of the transport chain for an aerobi

Assemble the components of the transport chain for an aerobic chemolithoautotroph growing in culture medium containing hydrogen (H2). There are 4 components that need to be placed in order using the reduction potential. However you only have to identify the carrier that would replace the #39 in the electron transport chain below. A. cytochrome a_3 - 0.385 mV B. cytochrome c - 0.23 mV c. Cytochrome bc = 0.035 mV D. quince cm/red = -0.075 mV

Solution

Since it can be seen from the figure that the protons are released on the outer side of the membrane, for use by ATP synthase it should be Cytochrome bc which binds to ubiquinol, a carrier of hydrogen atoms that is found in the mitochondrial membrane, removing two protons and two electrons.