e)+Human+Nutrition

Section 2- Structures and functions in living organisms a) Levels of organisation - b) Cell structure - c) Biological molecules - d) Movement of substances - e) Human Nutrition - e) Plant Nutrition - f) Respiration - g) Gas exchange (Humans) - g) Gas exchange (Plants) - h) Transport (Humans) - h) Transport (Plants) - i) Excretion - j) Coordination and response (Humans) - j) Coordination and response (Plants)

2e) Human Nutrition
Divide into groups (3 - 6 students, as directed by your teacher) Write down the all names of the different dietary components you know of Rank them according to how important you think they are - record your ranking on a whiteboard Prepare a quick (1 min) presentation of your reasoning to share with the class
 * Starter**

Later in the topic test your knowledge of the digestive system using the Draw, Label, Annotate starter media type="custom" key="24592794"

2.23 understand that a balanced diet should include appropriate proportions of carbohydrate, protein, lipid, vitamins, minerals, water and dietary fibre 2.24 identify sources and describe functions of carbohydrate, protein, lipid (fats and oils), vitamins A, C and D, and the mineral ions calcium and iron, water and dietary fibre as components of the diet 2.25 understand that energy requirements vary with activity levels, age and pregnancy 2.26 describe the structures of the human alimentary canal and describe the functions of the mouth, oesophagus, stomach, small intestine, large intestine and pancreas 2.27 understand the processes of ingestion, digestion, absorption, assimilation and egestion 2.28 explain how and why food is moved through the gut by peristalsis 2.29 understand the role of digestive enzymes, to include the digestion of starch to glucose by amylase and maltase, the digestion of proteins to amino acids by proteases and the digestion of lipids to fatty acids and glycerol by lipases 2.30 understand that bile is produced by the liver and stored in the gall bladder, and understand the role of bile in neutralising stomach acid and emulsifying lipids 2.31 describe the structure of a villus and explain how this helps absorption of the products of digestion in the small intestine 2.32 describe an experiment to investigate the energy content in a food sample.
 * Learning outcomes (s//tudents will be assessed on their ability to)//**

Use the BioK notes outline below to help you build notes for this topic. Complete the activities and labs as directed.Complete the summary questions as directed. media type="custom" key="27835703"
 * Approach**

Nutrients and a Balanced Diet (2.23 - 2.24) p37 - 42 Energy Requirements (2.25) p43-45 Measuring the energy content of food (2.32) p45 Structures and process of digestion (2.26 - 2.27) p46 - 50 Peristalsis (2.28) p46 Villus (2.31) p50 Liver and the gall bladder (2.30) p48 - 49 Enzymes (2.29) p4 - 6, 46, 48
 * Greenbook (Edexcel IGCSE Biology) References **

These video tutorials from [|Click4Biology] address each learning outcome you should watch each video before attempting to complete the workbook sections. Download links are provided for those who have trouble accessing Youtube.
 * Tutorials**

2.23 Balanced Diets download media type="custom" key="23681208"

2.24a Sources of food download media type="custom" key="23681210"

‪2.24b Vitamins and Minerals‬ download media type="custom" key="23681212" 2.25 Energy and Diet download media type="custom" key="23925610" 2.26 The human alimentary canal download media type="custom" key="23925618" 2.27 Stages of Digestion download media type="custom" key="23925630" 2.28 Peristalsis download media type="custom" key="23925636" 2.29 Digestive enzymes download media type="custom" key="23925638" 2.30 Bile download media type="custom" key="23925640" 2.31 Villi - structure and function download media type="custom" key="23925646" 2.32 Investigating energy content in food download media type="custom" key="23925660"

2.23 and 2.24 Balanced Diet and Food groups Brainpop tutorials on [|nutrition] and [|carbohydrates] If your diet is not balanced problems such as [|obesity] can become a problem

2.24 Food groups This [|help file] will guide you in completing the table in your workbook

2.26 and 2.27 This [|McGraw and Hill animation and quiz] looks at the organs in the digestive system and their roles

2.28 Peristalsis Watch this [|overview of peristalsis] Now look at this animation showing the muscle contractions media type="file" key="peri2.spl" width="429" height="429"

2.31 Villi and Microvilli [|Estrella Mountain Community College] on digestion has lots of good information and a nice image showing the relationship between villi and microvilli (some of the information, terms and details you don't have to know for GCSE - always to refer to your learning outcomes)

2.23 Balanced Diet (skip the workbook section, but you may wich to use the pages references to help this task) Carry out research to answer the following questions, answers should be presented in the form of a poster:
 * Classwork**
 * What are the seven major components are needed for a balanced diet?
 * For each component state 2 foods rich in it
 * For each component briefly describe why it is needed
 * Describe what would happen if you didn't have enough of it in your diet
 * For an average person what proportion (%) of your diet should it be?
 * Describe what would happen if you get too much fat in your diet
 * Describe what would happen if you don't get enough fibre in your diet
 * Common salt contain sodium which is a useful mineral, what can happen if there is too much salt in your diet
 * Explain why the diet of young people has a different balance to adults

Now print the poster off and add it to your workbook

2.24 Nutrients and 2.25 Energy Requirements Review workbook in class

2.26 Digestive System and 2.27 Ingestion, digestion, absorption, assimilation and egestion Produce a stop gap animation of digestion and the digestive system. Brain storm ideas amongst the class how you can best work together to carry this out.

2.28 Peristalsis Using the animation above outline how peristalsis works using the following words in your answer: bolus muscle contract oesophgus stomach intestines


 * Starters and quizzes**

2.23-2.24 Biological molecules crossword media type="custom" key="27835709"

The digestive system 2.26-2.27
 * 1) with your book closed write down in order the organs through which food passes
 * 2) Food does not pass through the pancreas and the liver outline the role of each in digestion and say where and how they are connected to the alimentary canal

Digestion Recap 2.24-2.27 media type="custom" key="27835715"

Brainpop tutorial on the [|digestive system] The [|digestive system] and how your body digests food
 * Useful links**