Which of the following is a true statement? Mucus protects the stomach lining from digestive secretions. Protease breaks down lipids into fatty acids and glycerol. Lipase breaks down proteins in the small intestine. Pepsin is an antibacterial agent that kills some bacteria.
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Mucus protects the stomach lining from digestive secretions.The mucus protects the gastric mucosa from autodigestion by e.g. pepsin and from erosion by acids and other caustic materials that are ingested. Bicarbonate ions, secreted by the surface epithelial cells. The bicarbonate ions act to neutralize harsh acids.