Digestive system aqa gcse biology unit 2-Questions and Answers Graded A+
Digestive system aqa gcse biology unit 2-Questions and Answers Graded A+ What is produced in the salivary gland? - ANSWER-Amylase in the saliva What happens in the gullet/oesophagus? - ANSWER-The muscles help the food go into the stomach What happens in the stomach? - ANSWER-Produces protease enzyme, pepsin What does the stomach do? - ANSWER-It produces hydrochloric acid to kill bacteria and to give the right ph which is 2 for the enzyme to work. What happens in the liver? - ANSWER-Bile is produced which neutralises stomach acid and emulsifies fats What happens in the gall bladder? - ANSWER-Bile is stored here before being released into the small intestine What happens in the pancreas? - ANSWER-Produces protease, lipase and amylase. Which then releases into the small intestine What happens in the large intestine? - ANSWER-Where excess water is absorbed from the food into faeces What happens in the small intestine? - ANSWER-Produces protease, amylase and lipase to complete digestion Where is amylase produced? - ANSWER-The mouth (saliva) What are the uses dor enzymes at home? - ANSWER-Biological detergents that contain protein digesting and fat digesting enzymes What are the uses of enzymes in industry? - ANSWER-Proteases are used to pre digest the protein into some baby food Carbohydrases are used to convert starch into sugar syrup What is the equation for respiration? - ANSWER-Glucose + oxygen to carbon dioxide + water and energy What can the energy be used for? - ANSWER-1) to build larger molecules from smaller ones 2) in animals, to enable muscle contract
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