Low pH = “kill + prime”: denature microbes and prime pepsin.
1. What is one important effect of hydrochloric acid in the stomach that also helps pepsin work effectively?
2. Which statement best describes enzymes in digestion?
3. What is the primary role of hydrochloric acid in gastric juice?
Hydrochloric acid — role?
Creates low pH to denature microbes and prime pepsin.
Enzymes — function?
Speed up reactions without being consumed.
Hydrochloric acid role
Creates low pH, denatures microbes, primes pepsin
Pepsin activity dependence
Depends on optimal stomach pH
Enzymes vs mechanical digestion
Enzymes break molecules; physical breakdown is mechanical
Digestive organs list
Mouth, salivary glands, oesophagus, stomach, small/large intestines, pancreas, liver, gallbladder
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