When James Cameron was working on his character, Rose Dewitt Bukater Calvert for the film Titanic, he had already envisioned a feisty character with a dominating mother. Bill Paxton's wife was reading Beatrice's Wood's autobiography.
photosynthesis removes carbon dioxide from the atmosphere, and cellular respiration puts it back. Photosynthesis releases oxygen into the atmosphere, and cellular respiration uses that oxygen to release energy from food.
Both photosynthesis and cellular respiration rely on electron carrier molecules to provide electrons to ultimately help produce ATP. In photosynthesis the source of electrons is ______, and in cellular respiration the source of electrons is ________.