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→Key Stage 3
: The [[Digestive Enzyme|enzyme]]s in the [[stomach]] work best in [[acid]].
==Key Stage 34==
===Meaning===
The [[stomach]] is an [[organ]] in the [[Digestive System|digestive system]] which breaks down food [[Molecule|molecules]] into small [[Molecule|molecules]] using [[Enzyme|enzymes]].
===About the Stomach===
: The [[stomach]] produces [[hydrochloricHydrochloric Acid]] [[acid]].: The [[hydrochloric]] [[acid]] in the [[stomach]] kills [[bacteria]] to help prevent us getting sick.
: The [[stomach]] [[Digestion|digests]] food using [[Digestive Enzyme|digestive enzymes]] including a [[protease]] called [[pepsin]] which breaks down [[protein]]s into [[Amino Acid|amino acids]].
: The [[Digestive Enzyme|enzymeHydrochloric Acid]]s in the [[stomach]] work best in kills [[bacteria]] to help prevent us getting sick and keeps the [[stomach]] [[acid|acidic]]to be the [[optimum]] [[pH]] for the [[Digestive Enzyme]]s to work.