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Unformatted text preview: n animals and ________ in plants. A) starch . . . glycogen B) glycogen . . . starch C) cellulose . . . glycogen D) glycogen . . . cellulose E) chitin . . . glycogen Answer: B Topic: 3.7 Skill: Factual Recall 30) Which of the following organisms contain the polysaccharide chitin? A) animals and plants B) plants and bacteria C) fungi and insects D) insects and plants E) crustaceans and bacteria Answer: C Topic: 3.7 Skill: Factual Recall 7 31) An oil may be converted into a substance that is solid at room temperature by A) adding hydrogens, decreasing the number of double bonds in the molecules. B) removing water, causing a dehydration synthesis reaction to occur. C) removing hydrogens, increasing the number of double bonds. D) cooling it, so that double bonds form and the fats solidify. E) adding water and shaking it vigorously. Answer: A Topic: 3.8 Skill: Application 32) A diet high in animal products and hydrogenated vegetable margarine may increase the risk for atherosclerosis. This is because A)most animal fats are unsaturated and most hydrogenated vegetable margarines contain high levels of steroids. B) most hydrogenated vegetable margarines are hydrogenated oils and most animal products contain high levels of phospholipids. C) most animal fats are used for energy storage and most hydrogenated vegetable margarines contain high levels of unsaturated fats. D) most animal fats are saturated and many hydrogenated vegetable margarines contain high levels of trans fats. E) most animal products contain high levels of unsaturated oils and most hydrogenated vegetable margarines contain anabolic steroids. Answer: D Topic: 3.8 Skill: Conceptual Understanding 33) Because water and oil donʹt mix, water is not very effective at washing away oily dirt. The ability of soap to mix with both water and oily dirt allows dirt to be washed away. Which statement provides the most logical chemical explanation for this phenomenon? A) Soap molecules have both positively and negatively charged regions. The positively charged regions are attracted to water; the negatively charged r...
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This note was uploaded on 10/31/2012 for the course ENGI 1010 taught by Professor Dr.robert during the Fall '12 term at Dalhousie.
- Fall '12