1) Saliva is added to the food in the... a) Mouth b) Oesophagus c) Stomach d) Pancreas e) Small Intestine f) Large Intestine 2) Where is water reabsorbed into the body? a) Mouth b) Oesophagus c) Stomach d) Pancreas e) Small intestine f) Large intestine 3) The mouth only breaks food down mechanically. a) True b) False 4) Bile does the following a) Digests food b) Neutralises the acid from the stomach c) Kills bacteria d) Helps lipid digestion 5) The pancreas produces enzymes which help break up the food. a) True b) False 6) Which acid does the stomach produce? a) Hydrochloric b) Nitric c) Sulfuric d) Ethanoic 7) The muscle movement of food in the oesophagus is? a) peristalsis b) egestion c) peritation d) edgestion 8) Which organ produces bile? a) liver b) gall bladder c) stomach d) pancreas 9) What are the two jobs of saliva? a) digest starch b) lubricate food c) digest protein d) break fat into droplets 10) What are the folds in the small intestine called? a) villi b) billi c) jilli d) milli 11) Adaptations of the small intestine for absorption of nutrients a) Small surface area b) Large surface area c) Good blood supply d) Poor blood supply e) Thin walls f) Thick walls 12) The place where the substrate joins to the enzyme a) Passive site b) Active place c) Passive place d) Active site

Digestion and biological molecules

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