Acids and bases are important in living things because most enzymes can do their job only at a certain level of acidity. Cells secrete acids and bases to maintain the proper pH for enzymes to work. For example, every time you digest food, acids and bases are at work in your digestive system.
False: Fats are derived from different foods inside most food groups, and aren't exclusive.
C - Eukaryotes and heterotrophic.
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Photosynthesis puts oxygen in the atmosphere.
