Activity Ross High Restaurant From the choice of nine food cards on the board select menus of a starter, main course and dessert that will provide: a) the most carbohydrate b) the most protein c) the most fat
Carbohydrates Maltose (soluble) Glucose (soluble) G G G G G G Starch (insoluble) G G G G G G G
Proteins Peptides Amino acids (soluble) Protein (insoluble)
Notes Carbohydrates Fats Proteins Elements Present Carbon Hydrogen Oxygen Basic Units Glucose/Maltose molecules Diagram Use Energy/ stored energy Copy and complete the table. Help Torrance p113 Success Guide p33
Food Groups Carbohydrates Fats Proteins Elements Present Carbon Hydrogen Oxygen Carbon Hydrogen Oxygen Carbon Hydrogen Oxygen Nitrogen Basic Units Glucose/Maltose molecules Fatty acids & glycerol Amino Acids Diagram Use Energy/ stored energy Energy Growth and repair
8 4 8 12 32 Activity Incisor Canine Pre Molar Molar Upper Jaw Lower Jaw Total Incisor Canine Premolar Molar Total 4 4 2 2 4 4 6 6
-Label your copies of the above diagrams. -Colour in the four kinds of teeth for each. Activity Have a look at the skulls and see if you can determine their diet. Notes Help Trying finding help in the class books
Investigate one enzyme each and share the results with your group.
Results Write a conclusion for each of the enzymes stating which enzyme group they belong to. Yes/No EnzymeA Starch Digested EnzymeB Protein Digested EnzymeC Fat Digested
Now that we have labelled the organs of the digestive system and investigated enzyme groups… Produce a table showing the function of all the organs in the digestive system. Notes Help Success Guide p38 Torrance p121/122
Need a Hint? -If a marble was stuck in a hose pipe what would you do to get it out? -What tissue do you think we have in the digestive system that would cause the same effect? Discuss How does food work its way through all the tubes in the digestive tract?
The main function of the small intestine is to absorb the products of digestion.
The small intestine is very efficient at this job because of its structure.
Make notes explaining the features the small intestine has that make it suited to its job. Notes
Villi are finger like folds in the surface of the small intestine Villi
The Small Intestine – The Villi Thin epithelium Blood capillary Tiny lymphatic vessel Enzyme secreting gland - Glucose and amino acids are transported in the blood stream. - Fats are transported in the lacteal.
Check Test 1 mark 3 marks 3 marks 1 mark Q1 Type of Food Carbohydrate a) b) Chemical Elements Carbon c) d) Hydrogen e) f) Nitrogen g) h) i) Basic Units j) k) l) Function m) Source of energy/ insulation n)
Q2 Which of the following statements is true about digestion?
It converts sugar into starch which can be absorbed into the blood.
It breaks down large molecules into smaller ones that can pass through the wall of the gut.
It converts proteins to amino acids for storage in the stomach.
The digestion of carbohydrates, proteins and fats is carried out by
An enzyme which slows down the process.
One enzyme that breaks down all three types of food.
An acid which speeds up the process.
A different enzyme for each type of food.
Q8 Give two features of the small intestine which make it efficient for absorption. 2 marks Q9 Which part of the digestion system is the site where most water is removed from the contents. 1 mark
Homework Starting tomorrow, record everything you have to drink in a day. Have a separate record sheet for each day and keep recording till next time you are in Biology. Record volumes if possible, if not record if you used a mug/ cup / carton etc.