Each time a person takes a breath,he or she is bringing in the oxygen he or she needs to stay alive.The ultimate source of the oxygen used by all aerobic organisms comes from a reaction that breaks down

Question

Quizplus · Accepted Answer

The ultimate source of oxygen used by aerobic organisms comes from the process of photosynthesis, specifically the light-dependent reactions that occur in the thylakoid membranes of chloroplasts. During these reactions, water molecules are split, releasing oxygen gas as a byproduct. This oxygen is then used by organisms during cellular respiration to generate ATP and fuel metabolic processes. Therefore, choice C) water is the correct answer.

Each Time a Person Takes a Breath,he or She Is