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Before Bio lesson,Mary and Jane discuss what they know about that chapter...
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| hey do you know food in the stomach stimulates gastric juice? | |
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| gastric juice is a dilute solution of hydrochloric acid ,pepsin,renin | |
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| i think so...it kills harmful microorganisms in food | |
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| Yes! but do you do know the functions of the hydrochloric acid? | |
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| it also stops the action of salivary amylase by by denaturing it | |
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| yes true, it changes the inactive form of enzymes to pepsin and renin. | |
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