1. Your assignment is to write a story, describing the adventures of Indiana Jones as he travels through the alimentary canal. The journey must include descriptions of all the structures involved with the digestion process. Your story should include the exciting and horrifying adventures Indiana will encounter along his journey. Good luck!
6. Biology 30S Unit 2 DIGESTION & NUTRITION Express, in writing, your thoughts regarding the ‘ COST ’ of fast food compared with the food prepared at home.
7. Biology 30S Unit 2 DIGESTION & NUTRITION Human Nutrition Food not only supplies energy vital for life, but also provides important building materials that allow organisms to grow, develop, and rebuild injured and damaged cells. Nutrition is the study of the composition of food, its energy content, and slowly synthesized organic molecules. In general, a nutrient is any substance that has a useful function when taken up by body cells.
8.
9.
10. Biology 30S Unit 2 DIGESTION & NUTRITION Nutrient Discussion There are over 40 different nutrients, but we organize them into six categories. If you eat a wide variety of foods, you will automatically be eating all 40 nutrients to help keep you healthy. Nutrients are chemical substances obtained from foods during digestion. The six nutrients are carbohydrates, proteins, fats, vitamins, minerals, and water .
17. Biology 30S Unit 2 DIGESTION & NUTRITION Disaccharide Formation and Structure + H 2 0 α - GLUCOSE α - GLUCOSE MALTOSE CH 2 OH H O H OH O H CH 2 OH H O H HO OH CH 2 OH H O H OH CH 2 OH H O H OH O
22. Biology 30S Unit 2 DIGESTION & NUTRITION Peptide Bond, Dipeptide, and Polypeptide Formation A peptide bond is the bond that is created when two amino acids are covalently bonded together. The carboxyl group of the first is bonded to the amine group of the second. This is carried out by a dehydration synthesis reaction with the loss of a water molecule. This forms a dipeptide.
23. Peptide Bond, Dipeptide, and Polypeptide Formation H 2 O The peptide bond is created between the carboxyl carbon of the first amino acid and the amine group of the second amino acid. Peptide Bond This is called a dipeptide. If the process is repeated many times a polypeptide is formed. H H O N C C – OH H R 1 H H O N C C –OH H R 2 + H H O N C C – H R 1 H O N C C –OH H R 2
31. Biology 30S Unit 2 DIGESTION & NUTRITION Is this a saturated or unsaturated Fat? Why or Why not? It is saturated because there are no double bonds between carbon atoms in the fatty acid hydrocarbon chains.
32. Biology 30S Unit 2 DIGESTION & NUTRITION Triglyceride Formation H H-C—O H H-C—O H H-C—O H H GLYCEROL FATTY ACIDS H H-C— O H-C— O H-C— O H H 2 0 H 2 0 H 2 0 3 H 2 0 TRIGLYCERIDE What type of reaction forms a triglyceride? Dehydration Synthesis O H H H H H HO -C-C-C-C-C-C-H H H H H H O H H H H H HO -C-C-C-C-C-C-H H H H H H O H H H H H HO -C-C-C-C-C-C-H H H H H H O H H H H H - C -C-C-C-C-C-H H H H H H O H H H H H - C -C-C-C-C-C-H H H H H H O H H H H H - C -C-C-C-C-C-H H H H H H
33.
34.
35.
36.
37. Biology 30S Unit 2 DIGESTION & NUTRITION Food Labels
