Which of the Following is a Mobile Electron Carrier

Question

Which of the following is a mobile electron carrier?
A)UQ
B)[FMN]
C)Complex I
D)Complex III

Accepted Answer

Ubiquinone (UQ), also known as Coenzyme Q10, is a mobile electron carrier that is found in the inner mitochondrial membrane. It accepts electrons from Complexes I and II and transfers them to Complex III.