The constituents of the electron transport chain have similar capabilities,with the exception of ubiquinone (coenzyme Q).What is different about ubiquinone?
A)Ubiquinone is a protein that begins the electron transport chain,so it accepts the highest-energy electrons.
B)Ubiquinone is a protein that serves as a regulator of the rate of redox reactions in the electron transport chain.
C)Ubiquinone is a protein that is a constituent of all cells,prokaryotic or eukaryotic;hence its name originating from "ubiquitous."
D)Ubiquinone is lipid soluble and so can move through the inner mitochondrial membrane.

Question

Quizplus · Accepted Answer

Ubiquinone is different from the other members of the electron transport chain in that it is lipid-soluble and can move freely through the hydrophobic interior of the inner mitochondrial membrane. This allows it to shuttle electrons between complexes I and III, and between complexes II and III, in the electron transport chain.

The Constituents of the Electron Transport Chain Have Similar Capabilities,with