In which of the following are iron-porphyrin protein complexes found?

Oxygen is an essential requirement for aerobic respiration, but it enters the respiratory process at the end. Discuss.

The carriers and enzymes of $ETS$ found on the inner mitochondrial membrane for complex $I$ and $IV$ are . . . . . . and . . . . . . respectively.

In mitochondria,the proton gradient is established in which direction?

During $\text{ETS}$,ubiquinone receives reducing equivalents via

The process by which $ATP$ is produced in the inner membrane of a mitochondrion,where the electron transport system transfers protons from the inner compartment to the outer,and as the protons flow back to the inner compartment,the energy of their movement is used to add phosphate to $ADP$,forming $ATP$,is known as: