4 Exam - CHE105 Exploring Chemistry
Name:
December, 2007
MULTIPLE CHOICE. (5 pts each) Choose the one alternative that best completes the statement or answers the question.
__ __1) This molecule is an example of a(n) . . . ? A) Amino acid B) Triglyceride C) Protein D) Steroid E) Carbohydrate __ __2) The human body is primarily made up of . . . ? A) Amino acids B) Proteins C) Fats D) Carbohydrates E) Water ___ _3) In carbohydrates, the ratio of hydrogen to oxygen atoms (H:O) is usually about .? A) 2:1 B) 1:2 C) 1:1 D) 3:1 E) 1:3
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__ __4) This molecule is a(n) . . . ? A) saturated fatty acid B) monounsaturated fatty acid C) polyunsaturated fatty acid D) carbohydrate E) protein
C
C
C
C
C C
___ _5) How many amino acids are in this molecule? A) 0 B) 1 C) 2 D) 3 E) 4 ___ _6) What kind of a bond holds the amino acids together in a protein? A) hydrogen bond B) peptide bond C) ionic bond D) double bond E) acidic bond __ __ 7) What is the major role of fat in our diets? A) to add fiber B) to provide energy C) to create structural material D) to synthesize hemoglobin E) to repair body organs
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___ _ 8) Which of the numbered elements is present in a micromineral necessary for human life?
A) element #1 B) element #2 C) element #3 D) element #4 E) none of the above
__ _ 9. This structure represents a common vitamin. From the given structure, which statement about this vitamin is correct?
A) It will play a role in metabolizing minerals in the body, making an overdose likely. B) It is expected to be very soluble in fats, making an overdose possible. C) It will be a major source of energy for the body, making an overdose impossible. D) It is expected to be very soluble in aqueous solution, making an overdose unlikely. E) It is too unstable to be of much nutritional value. __ _ 10. Part of the food we eat is necessary to provide us with energy. Which is false concerning the nutritional aspects of energy? A) Photosynthesis is the primary way in which the earth's food is replenished. B) Fat contains more energy than carbohydrates because it is denser. C) The metabolism of carbohydrates often supplies the energy to perform other 'chemistry' in the body. D) Starches are one source of energy. E) Calories are directly related to the energy content of the food consumed.
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11. With respect to diet, which statement is correct? A) It is possible to be overweight and malnourished. B) If a person is malnourished, he/she would have to be anorexic. C) It is possible to be undernourished and not anorexic. D) If you meet your daily caloric intake, you can be undernourished. 12. The label on a popular brand of margarine states it is made from "partially hydrogenated" corn oil. Which statement is false? A) The liquid oil has become a solid fat. B) The margarine has more saturated fat (CC) than the corn oil. C) The margarine has the same amount of unsaturated fat (C=C) as the corn oil. D) The margarine has more hydrogens than the corn oil. 13. Which structure is correct for oleic acid, a monosaturated fatty acid? A) CH3(CH2)7CH=CH(CH2)7COOH B) CH3(CH2)7CH=CH(CH2)7CH3 C) CH3(CH2)7CHCH(CH2)7COOH D) CH3(CH2)6CH=CHCH=CH(CH2)7COOH 14. The fat soluble vitamins, A, D, E, K, are stored in lipid material. Which statement is true? A) These vitamins are not as important as the water soluble B) ones. These vitamins do not have to be taken daily. C) Ingesting excess amounts of these vitamins does no harm. D) These vitamins have to be taken in pill form because they are not usually found in foods. 15. Which equation correctly shows the breakdown of glucose by the body? A) C6H12O6 + 6 O2 6 CO2 + 6 H2O B) C12H24O2 + 17 O2 12 CO2 + 12 H2O C) C12H22O11 + 12 O2 12 CO2 + 11 H2O D) 6 CO2 + 6 H2O C6H12O6 + 6 O2 16. In 1991, the USDA approved the food pyramid, what type of food is in the section labeled "i"?
A. milk, yogurt, cheese B. meat, poultry, fish C. breads, cereals, grains D. fruits and vegetables
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17. What is the minimum time a 180-pound person would need to run to "burn off" a meal consisting of a hamburger (350 Calories), 3 oz of potato chips (1 oz = 108 Calories) and 2 beers (1 "regular" beer = 100 Calories)?
A. 31 min B. 44 min C. 49 min D. 58 min 18. If a body needs approximately 1 Cal/kg of body weight per hour, about how many calories would a 75-kg (165 pounds) man need per day? A. 1650 Cal/day B. 1800 Cal/day C. 3900 Cal/day D. 7500 Cal/day 19.
According to the data on Dietary Energy Supplies (DES), which statement is true? A. The average DES for developed nations is significantly higher than that for developing countries. B. The average DES for developing nations has increased over the last 20 years. C. North America has the highest average DES. D. All of the statements are correct.
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20. What is BMI? A. Body Mass Index is a guideline for ideal body weights. B. Body Mass Inventory indicates the number of "carbs" you can eat. C. Body Mineral Index indicates the minerals you need. D. Basal Metabolism Index indicates how fast your body digests food. 21. Given the table below, how long do I need to play basketball to burn off a 1000-Calorie lunch if I weight 150 lbs?
A. 13 min B. 77 min. C. 100 min. D. 1.95 min E. 87 min 22. URP's are A. urea-phosphates used as fertilizer for crops. B. urea reduction of proteins, indicative of undernourishment. C. united relief projects to help eliminate world hunger. D. unique radiolytic products created during irradiation of food with ionizing radiation. 23. Which type of nutrient cannot be converted to energy by the body? A. carbohydrates B. fats C. proteins D. minerals 24. Which of the following terms is not directly related to a discussion of lipids? A. steroids B. saturated fats C. glycerol D. peptide bonds
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25. Foods can be preserved by various means. Which of the following is the most recently developed method of preserving food? A. canning B. smoking C. sugar or salt curing D. irradiation E. refrigeration
(1 bonus point each.) 26. About how much of "Pollution and the Death of Man" ("P&DM" ) did you read? A. 0 % - 24 % B. 25 % - 50% C. 51% - 75% D. 76% - 100% 27. Which statement do you most closely agree with (Choose only one)? A. I would strongly not recommend "P&DM" as a text for this course. B. I would not recommend "P&DM" as a text for this course. C. I would recommend "P&DM" as optional text for this course. B. I would recommend using "P&DM" as a text for this course. E. I would strongly recommend using "P&DM" as a text for this course.
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