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CHEM 181 Practice (MT1 2010).doc

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McGill University
CHEM 181
David Harpp

1. The commonly used name for Vitamin C is a) Thiamine b) Ascorbic Acid c) Niacin d) Retinol 2. Antoine-Laurent Lavoisier… a) Developed the evaporating pan, for the production of sucrose b) Carried out the first experiments on nutrition, by measuring body fat c) Conducted the first experiments to find a cure for scurvy d) Conducted experiments in the 18 century on nutrition, measuring people’s breath 3. Generally, vitamin supplements have been found to be more or less ineffective and deemed useless, except for supplements to which one vitamin? a) Vitamin C b) Vitamin A c) Vitamin D d) Folic Acid 4. If a 300 g piece of meat is 20% fat by weight, and 40% water by weight, about what percentage fat by calories is it? a) 20% b) 40% c) 53% d) 39% 5. What percentage of crops is destroyed per year (on average) by insects? a) 20% b) 30% c) 40% d) 50% 6. Norbert Rillieux… a) Developed the evaporating pan, for the production of sucrose b) Carried out the first experiments on nutrition, by measuring body fat c) Invented a safer way to make sugar from corn d) Was the cousin of the French painter Degas e) A and D only Page 1 of 15 7. A deficator is usually needed to remove all the fibre in cane sugar by digestion. How much sucrose is there, on average, in cane sugar? a) 5% b) 80% c) 50% d) 15% 8. Thiamine is also known as… a) Vitamin D b) Vitamin B1 c) Vitamin K d) Vitamin B 12 9. The two types of starch and their approximate concentrations in nature are: a) Amylose (25%) and amylopectin (75%) b) Cellulose (50%) and Starch (50%) c) Amylose (15%) and amylopectin (85%) d) Amylose (15%) and pectin (85%) 10. A diet that is 10% fat by weight is what percent fat by calories? a) 10% b) 20% c) 25% d) 30% 11. The bacterium and acid that are responsible for producing dental caries (cavities) are: a) S. Mutans and Ascorbic Acid b) Lactobacillus and Lactic Acid c) Lactobacillus and Ascorbic Acid d) S. Mutans and Lactic Acid 12. Which of the following is NOT an ingredient involved in the synthesis of Methionine, a food supplement necessary for the growth of chickens. a) Water b) Methyl Mercaptan c) Acrolein d) Methanol e) Hydrogen Cyanide 13. What is interestification? Page 2 of 15 a) partially re-saturating polyunsaturated fats in order to produce more cooking-friendly oil b) the process of making a fat substitute where 8-12 fatty acids are linked onto a glucose core c) the biological process of creating proteins from amino acids d) linkages between carbohydrates and proteins formed during high- temperature conditions 14. The disease known as Beriberi (meaning I Can’t, I can’t)… a) Causes weak bones and is caused by a vitamin B 12deficiency b) Affects the nervous system and is caused by a Niacin deficiency c) Causes bleeding gums and is caused by a thiamine deficiency d) Affects the nervous system and is caused by a vitamin B 1 deficiency 15. How many essential amino acids are there? a) 8 b) 9 c) 11 d) 20 16. The two common sources of ethanol biofuels are? a) Sugar cane and Corn b) Sugar cane and Vegetable oil c) Soy plant and Corn d) Soy plant and Sugar cane 17. The term vitamin… a) was first coined by chemist Casimir Funk b) represent a range of nutrients that are required for life, but cannot be produced in the body c) Was derived from vital amine as the first vitamins had nitrogen groups d) All of the above e) B and C only 18. What type of ethanol is the least efficient and why? a) Corn based, as the corn must be malted before fermentation b) Sugar cane based, as the cane requires greater processing than corn c) Soy plant, as the harvesting of soy plant is an inefficient process d) The difference between the different types is negligible Page 3 of 15 19. Producing 1 kg of corn requires how much water? a) 500 L b) 700 L c) 900 L d) 1100 L 20. Pellagra, known as the 4D disease, is caused by a deficiency of which vitamin(s)? a) The B vitamins b) Vitamin B3 c) Niacin d) Vitamin D e) B and C f) C and D 21. Producing 1 kg of Beef requires: a) 7 – 16 kg of grain b) 1600 L of water c) 21 kg of grain d) 900 L of water e) A and B only f) A and D only g) B and C only 22. An early cure to scurvy was discovered when Jacques Cartier’s crew was advised by natives to make a tea from what? a) Citrus fruit b) White cedar c) Birch Bark d) Cod liver oil 23. Which of the following associations is incorrect? a) Vitamin B 3s also known as Niacin b) Vitamin B 9s also known as Folic Acid c) Vitamin E is also known as Tecophorol d) Vitamin A is also known as beta-carotene 24. A meta-analysis is: a) A study where the material to be studies and the assignment of subjects is controlled by the investigator b) A study based on past history where the assignment of subjects is not controlled by the investigator c) An analysis that combines the results of several studies to answer a set of related hypotheses d) Another name for a crossover, double blind, randomized placebo- controlled study Page 4 of 15 25. The Bikini was named after what? a) a small bird b) a French actress c) a Sea resort d) a Nuclear test sight 26. If all the corn grown in the US was converted into ethanol, what percentage of the 500 billion litres of gasoline consumed would be replaced? a) 10% b) 12% c) 15% d) 20% 27. One of the earliest supporters of using vitamin C supplements to improves health was: a) Linus Pauling b) Jacques Cartier c) James Lind d) Jeffrey Brooks 28. Homocystein a) is a metabolite of the amino acid Methionine b) can cause damage to the arterial walls c) can be decreased with an increase in B vitamin intake d) causes heart disease e) A, B and C only 29. Which of the following statements is incorrect? a) Cholesterol is found only in animal products b) Cholesterol is produced in the liver and pancreas c) Cholesterol is essential to life d) Cholesterol is used to produce sex hormones and cortosol 30. Flavanoids are: a) an anti-coagulant found in tomatoes b) responsible for giving tomatoes their flavour c) the key ingredient in FruitFlow d) All of the above e) A and C only 31. Which of the following statements is incorrect? a) Lycopene is the compound is tomatoes that is responsible for its red colour b) Lycopene is water soluble c) Lycopene absorbs UV light Page 5 of 15 d) Lycopene is an antioxidant, neutralizing free radicals 32. Docasahexaenoic Acid (DHA): a) is an Omega-3 fatty acid b) is an Omega-6 fatty acid c) can cause depression at higher amounts d) is found in Breast Milk e) A, C and D only f) A and D only g) B and D only h) B and C only 33. The fibre found in oat bran is called ______ and is _______. a) Pectin, soluble b) Beta-glucan, soluble c) Pectin, insoluble d) Beta-glucan, insoluble 34. An apple contains approximately what percentage water? a) 20% b) 35% c) 60% d) 85% e) 97% 35. C-reactive protein: a) is involved in inflammation and can precipitate heart attacks b) reduced blood cholesterol c) is the technical term for LDL receptors d) Is responsible for the oxidation of LDL 36.Which of the following was NOT a situation in which the National Health Institute in the USA recommends supplementing with vitamins a) Supplementing with B vitamins for women of child bearing age b) Supplementing with calcium and Vitamin D for post-menopausal women c) Supplementing with B vitamins for those with high risk of heart disease d) Supplementing with Beta-carotene, Zinc, Vitamin C and vitamin E to slow the progression of macular degeneration 37. Which of the following is an incorrect daily intake recommendation for vitamin E a) 100 IU for people adolescents b) 200 IU for people aged under 50 c) 400 IU for people aged 50 to 70 Page 6 of 15 d) 600 IU for people aged over 70 38. What is a safe LDL to HDL ratio? a) less than 1 b) less than 3 c) between 3 and 5 d) over 5 39. Atherosclerosis is: a) Damage to the valves of the heart b) Another name for cataracts c) Hardening of the arterial walls d) Caused by excess vitamin E 40. Which of the following statements is incorrect regarding Catechins? a) Catechins are found in tea b) Catechin intake can decrease risk of diabetes c) Catechins are anti-oxidants d) Catechins improve the ability of the arteries to relax and expand 41. Cholesterol belongs to what family of molecules? a) Proteins b) Fats c) Steroids d) Vitamins e) Carbohydrates 42. Which of the following statements is/are correct regarding Simplese? a) it is completely synthetic b) it is not metabolized in the body c) it has the same caloric value per gram as sugar d) it is derived from milk proteins e) All of the above f) C and D only g) A, B and D only For questions 43 – 48 use the images below i. ii. iii. Page 7 of 15 iv. v. vi. 43. Image i. represents: a) Starch b) Cellulose c) Glucose monosaccharide d) Protein 44. Image ii. represents: a) Protein b) Cellulose c) Fat d) Advanced Glycation End Product 45. Image iii. represents: a) Protein b) Amino Acid c) Vitamin C d) Omega-3 Fatty Acid 46. Image iv. represents: a) Unsaturated fat with trans double bond b) Unsaturated fat with cis double bond c) Advanced Glycation End Product d) Polypeptide 47. Image v. represents: a) Starch b) Cellulose c) Glucose monosaccharide
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