Final answer:
CoQ is also known as coenzyme Q, an electron carrier in the mitochondrial membrane involved in the electron transport chain and ATP production.
Step-by-step explanation:
CoQ is also known as coenzyme Q, which is an electron carrier in the mitochondrial membrane. It is involved in the electron transport chain, where it receives electrons from complex I and complex II and delivers them to complex III. Coenzyme Q is essential for ATP production and plays a crucial role in aerobic respiration.