Final answer:
Acids and bases work together to maintain the pH of cells by regulating pH levels and creating optimal environments for enzyme function.
Step-by-step explanation:
Acids and bases are important in maintaining the pH of cells. Acids are substances that release hydrogen ions (H+) when dissolved in water, while bases are substances that release hydroxide ions (OH-) when dissolved in water. In cells, acids and bases work together to maintain a stable pH. Cells secrete acids and bases to regulate pH levels and create an optimal environment for enzymes to function. For example, in the stomach, acids are secreted to create an acidic environment necessary for the enzyme pepsin to break down proteins. In contrast, the small intestine secretes bases to neutralize the acidity from the stomach and create a basic environment for enzymes to work.