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

question 3

Multiple Choice

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.It therefore accepts high-energy electrons.
• B)Ubiquinone is a protein that serves as a regulator of the speed 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.
• D)Ubiquinone is lipid soluble and can therefore move through the inner mitochondrial membrane.

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