Indicate whether each of the following statements better describes ATP production in chloroplasts (C) or in mitochondria (M). Your answer would be a four-letter string composed of letters C and M only, e.g. MCMM.
( ) The electrochemical gradient that drives ATP production is dominated by the electrical component.
( ) It involves a significant pH difference across the membrane.
( ) The ATP synthase molecules form dimers.
( ) The ATP synthase molecules are distributed randomly in flat membrane regions.