2. Compared to normal corn syrup, high fructose corn syrup is A) sweeter. B) less sweet. C) the same sweetness. D) higher in calories.

Transcription

1 CHEM 100 MODULE 10 PRETEST 1. Blood sugar is A) fructose. B) glucose. C) lactose. D) sucrose. 2. Compared to normal corn syrup, high fructose corn syrup is A) sweeter. B) less sweet. C) the same sweetness. D) higher in calories. 3. When starch is digested, it is hydrolyzed to A) fructose. B) glucose. C) lactose. D) sucrose. 4. From your body's perspective, glucose is A) a fuel. B) an oxidizing agent. C) a source of structural material. D) all of the above 5. Which of the following is NOT produced during the metabolism of glucose? A) energy B) carbon dioxide C) ammonia D) water 6. Complex carbohydrates are essentially polymers of A) glucose. B) amino acids. C) nucleic acids. D) cholesterol. 7. The body stores a relatively small amount of excess glucose as A) cellulose. B) glycogen. D) fat. 8. The body stores most excess glucose as A) cellulose. 1

2 B) glycogen. D) fat. 9. Animal starch is A) glucose. B) cellulose. C) glycogen. D) fat. 10. A good source of complex carbohydrates is A) sucrose. B) lactose. C) cereal grains. D) beef steak. 11. In the body, fat serves as a A) thermal insulator. B) protective covering of organs. C) reserve energy supply. D) all of the above 12. Fats and cholesterol are carried in the blood by association with A) hemoglobin. B) lipids. C) lipoproteins. D) glucose. 13. Lipoproteins are classified by A) density. B) carbon number. C) amino acid sequence. D) iodine number. 14. The class of foods that has the highest caloric value is A) carbohydrates. B) fats. D) vitamins. 15. Some of the fat-laden foods are cream, butter, margarine and. A) fish B) celery C) fruit D) salad oils 16. Cholesterol is a A) fully saturated triglyceride. 2

3 B) highly unsaturated triglyceride. C) fatty acid. D) steroidal alcohol. 17. Proteins are polymers of A) glucose. B) amino acids. C) lipids. D) nucleic acids. 18. Kwashiorkor is a disease caused by A) lack of iodine. B) iron deficiency. C) extreme lack of protein and vitamins. D) sedentary life style. 19. Amino acids that are not synthesized by the human body and must be obtained in food sources are called A) nucleic acids. B) carboxylic acids. C) essential amino acids. D) vitamins. 20. Iron plays a central role in A) protein synthesis. B) nucleic acid replication. C) hemoglobin structure and oxygen transport. D) bones. 21. Iodine is an important mineral in the proper functioning of the A) brain. B) thyroid. C) intestines. D) heart. 22. Excess intake of sodium chloride (salt) can cause A) beriberi. B) goiter. C) hypertension. D) phenylketonuria. 23. Vitamins can be grouped into two broad categories: A) the B complex and the rest. B) fat soluble and water soluble. C) acids and esters. D) esters and amines. 24. Fat soluble vitamins are 3

4 A) stored in the body. B) excreted from the body. C) rapidly decomposed in the body. D) less important than water soluble vitamins. 25. Water soluble vitamins are A) polar. B) nonpolar. C) ionic. D) hydrocarbons. 26. The fat soluble vitamins are A) A, B, C, K. B) A, C, D, K. C) A, D, E, K. D) B, C, D, E. 27. A disease or condition that vitamin C is known to cure is A) colds. B) scurvy. C) cancer. D) rickets. 28. The addition of nutrients to replace those lost in processing is called A) enrichment. B) fortification. C) GRAS. D) incidental addition. 29. Aspartame is a(n) A) artificial sweetener. B) vitamin. D) monosaccharide. 30. Food additives are used A) as antioxidants. B) to enhance or improve the taste of food. C) as preservatives. D) all of the above 31. Which of the following is NOT a purpose for combining food with additives? A) to add nutritional value B) to improve the appearance of food C) to retard spoilage D) Additives have been used for all of the above purposes. 32. Benzoic acid serves as a 4

5 A) flavoring. B) preservative. C) coloring agent. D) humectant. 33. The yellow-orange color of carrots is due primarily to A) chlorophyll. B) β-carotene. C) FD&C yellow. D) BHA. 34. Which fertilizer is also an explosive? A) NH3 B) NH4NO3 C) KCl D) Ca3(PO4)2 35. The Haber process results in A) the conversion of N2 and H2 to NH3. B) the fixation of N2 to form NO3 -. C) the combination of bone phosphate with sulfuric acid to form superphosphate. D) the mining of potassium chloride deposits by using an environmentally friendly method. 36. Which of the following statements about humus is NOT correct? A) Humus aids in water retention. B) Humus both increases the loss of nutrients through leaching and increases erosion. C) Humus is a dark-colored material consisting of partially decayed plant or animal matter. D) Humus provides a good environment for earthworms. 37. DDT is concentrated in living organisms because it is A) water soluble. B) fat soluble. C) synthetic. D) synthesized in the liver. 38. Organophosphorus pesticides are generally less than DDT. A) potent B) insect resistant C) persistent D) fat soluble 39. A worker at an experimental agricultural station spills a substance on her lab coat. The next morning her lab coat is covered with sex crazed moths. The spilled substance was probably A) parathion. 5

6 B) fertilizer. C) DDT. D) a pheromone. 40. Pheromones are A) chemical substances excreted by insects. B) a class of organophosphorus pesticides. C) natural insecticides produced by plants. D) human sex hormones. 41. Insects are attracted to a piece of sticky paper in great numbers. The paper has probably been treated with A) DDT. B) pheromone. C) plutonium. D) parathion. 42. Which of the following does NOT involve using a biological insect control method? A) releasing sterile males into the wild B) treating insects with juvenile hormones C) using organic phosphorus compounds D) attracting insects with pheromones 6