Answer:
The correct answer is c. It enables the rapid transfer of electrons, thereby increasing the efficiency of proton pumping.
Explanation:
Having three complexes will increase efficiency due to the fact that these complexes are connected, being more efficient in proton pumping.
Within the nucleus is a small subspace known as the nucleolus. It is not bound by a membrane, so it is not an organelle. This space forms near the part of DNA with instructions for making ribosomes, the molecules responsible for making proteins. ... The cell membrane is represented as the "factory walls." (Found on Khan Academy)
The skeleton of an embryo is made up of cartilage and collagen
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