WebbBile has two main roles: It is alkaline to neutralise the hydrochloric acid which comes from the stomach The enzymes in the small intestine have a higher (more alkaline) optimum … WebbHormonal control of digestion. It has now been well established that gut hormones have a key role in controlling food intake and energy expenditure. The gut is the body’s largest hormone-producing organ, releasing more than 20 different peptide hormones, some of which target the brain to regulate appetite and influence the pleasure of eating.

gcse biology edexcel B2b life process PDF Digestion Enzyme

Webbc) Describe one role of bile in digestion of triglycerides. (Marks available: 5) 2. The secretion of digestive juices into the mammalian gut is controlled by the endocrine and nervous systems. What should go in place of the letters a), b), c) and d) to complete the table? (Marks available: 4) Source: NEAB 1999 3. high power tabletop system

The liver and digestion - Animal organisation - digestion - AQA

WebbEnzymes. Enzymes are specific, i.e. one reaction will be catalysed by one enzyme. Enzymes can be denatured by high temperatures and or extreme changes in PH level. Enzymes have an optimum PH at which they will work, which will vary by activity. Enzymes have an optimum temperature at which thy work, for many enzymes this is body … After it has been in the stomach, food travels to the small intestine. The enzymes in the small intestine work best in alkalineconditions - but the food is acidic after being in the stomach. Bileis a substance produced by the liver and stored in the gall bladder. It passes down the bile duct into the small intestine. Bile … Visa mer Food is moved through the digestive system by a process called peristalsis. The muscles in the oesophagus contract above the bolus to push food down the … Visa mer The stomach produces hydrochloric acid. It kills many harmful micro-organismsthat might have been swallowed along with the food. The enzymes in the stomach … Visa mer WebbThe stomach - the organ where digestion continues. The pancreas - produces enzymes which speed up the digestion process. The liver - produces bile which breaks down fats into fatty acids which can be absorbed. The gall bladder - this is where bile is produced before it is released into the duodenum. Small intestine (duodenum) - here the food is ... high power telescope for sale