question: Sequence of complexes in the electron transpo chain is -
opa: NADH dehydrogenase - Q - Cytochrome bc1 - Cytochrome aa3 - O,
opb: NADH dehydrogenase - Q - Cytochrome aa3 - Cytochrome bcl- O,
opc: NADH dehydrogenase - Cytochrome aa3 - Q - Cytochrome bcl- O,
opd: NADH dehydrogenase - Cytochrome bcl - Q - Cytochrome aa3 - O,