Exam 18 December, questions and answers PDF

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NAME:____________________________________________ ID:_______________________ Section I: Multiple Choice (1 mark per question, total 25 marks) Identify the letter of the choice that best completes the sentence or answers the question. 1. When the scientific method is used, a hypothesis is first proposed and then tested through experimentation. Which of the following statements is the best example of a hypothesis that can be tested by means of experiments that use a quantifiable measure? a) iron supplements increase feelings of vitality b) a high vitamin E intake makes you feel younger c) eating an apple a day will lower blood cholesterol d) B vitamin supplements give you an energy boost e) chocolate intake makes you happier 2. In which order are the ingredients listed on a food label? a) alphabetically b) from largest to smallest, by size c) from largest to smallest by weight d) from largest to smallest by volume e) from macronutrients to micronutrient content 3. Which of the following is not secreted by the pancreas? a) gastrin b) glucagon c) lipase d) amylase e) insulin 4. Which of the following is not a typical dietary source of carbohydrate? a) amylose b) glycogen c) sucrose d) fructose e) lactose 5. Which of the following ingredients on a food label indicates that there may be trans fatty acids present in the product? a) High-fructose corn syrup b) Canola oil c) Thiamine mononitrate d) Partially-hydrogenated vegetable oil e) Monosodium glutamate

Section II: Fill in the Blank (1 mark each, total 3 marks)

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1. Celiac disease results from repeated autoimmune responses to the protein _____________________, which damage the small intestine villi. 2. Nutritional _________________________ is the study of how nutritional factors, especially those in early life, can affect how DNA is expressed. 3. Omega-3 and omega-6 fatty acids can be used to synthesize hormone-like molecules called ______________________________. 4. Multivitamins, herbal remedies and probiotics are classified as __________________________ ____________________________, in Canada; they are not classified/regulated as foods. Section III: Short Answers (Marks as indicated, total 15 marks) 1. Explain the concept of nutrient density. Support your answer by giving an example of a food that is nutrient dense and one that isn’t. (2 marks)

2. Outline in detail how fatty acids are metabolized to eventually form ATP. Include all the relevant steps of cellular respiration involved in the process, including the reactants and products at each stage. (4 marks)...