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Activity 3:
Ulcers
& Bacteria of Digestion 1. Can you think of what would eventually happen to the stomach if an ulcer was left untreated? 2. Can you think of how an antibiotic kills only bacteria but not the cells in your body? What structural feature might be different in bacteria than in your cells? 3. Speculate on why the ulcer-causing bacteria can survive in your stomach, but not other types of bacteria. What condition exists in the stomach that the ulcer causing bacteria would have to withstand?
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