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1 | |
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 |
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2 | |
Which of the numbered elements is present in a micromineral necessary for human life?
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| | A) | element #1 |
| | B) | element #2 |
| | C) | element #3 |
| | D) | element #4 |
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3 | |
Olestraâ is presently approved only for some salty snack foods. Which factor or factors limit Olestra'sâ widespread use in other food products?
I. Olestraâ cannot be metabolized.
II. Olestraâ dissolves fat-soluble vitamins.
III. Olestraâ can cause unpleasant digestive problems.
IV. Olestraâ is unstable at high temperatures. |
| | A) | I and II only |
| | B) | II and III only |
| | C) | II, III, and IV only |
| | D) | I, II, III, and IV |
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4 | |
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If you see this symbol on a packaged food product, it tells you that the food |
| | A) | is USDA certified as 100% organic. |
| | B) | has been fertilized with urea containing a slow-release enzyme. |
| | C) | has no genetically modified ingredients. |
| | D) | has been treated with radiation to preserve quality. |
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5 | |
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This structure represents the antioxidant BHT. What is the formula for this substance? |
| | A) | C9H22O |
| | B) | C13H22O |
| | C) | C15H24O |
| | D) | C15H28O |
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6 | |
How many Calories of food energy can you derive from eating a 40-g piece of whole wheat bread? (Assume the bread is 51% carbohydrate, 9% protein, and 3% fat and that the rest is mainly water.) |
| | A) | 107 Cal |
| | B) | 120 Cal |
| | C) | 160 Cal |
| | D) | 267 Cal |
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7 | |
This structure represents a common vitamin. From the given structure, which statement about this vitamin is correct?
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| | 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. |
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8 | |
This figure is a schematic diagram of the 1991 food pyramid. What foods are found in sections "B" and "C" of the pyramid?
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| | A) | section B = fruits; section C = milk, yogurt, and cheese |
| | B) | section B = meat, fish, and nuts; section C = bread, cereal, and pasta |
| | C) | section B = bread, cereal, and pasta; section C = fats, oils, and sweets |
| | D) | section B = vegetables; section C = fruits |
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9 | |
What is meant by the term malnutrition? |
| | A) | Malnutrition refers to a diet lacking in the proper nutrients, even though sufficient Calories are consumed. |
| | B) | Malnutrition refers to a lack of a sufficient number of Calories daily, no matter what the nutrient content. |
| | C) | Malnutrition refers to the lack of information about nutrition, particularly among the poor in the U.S. and in developing countries. |
| | D) | Malnutrition, as is the case for undernourishment, refers to a diet in which macronutrients are adequate but micronutrients are missing. |
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10 | |
Which statement about this structure is correct?
 <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0072410159/51625/11B10.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (0.0K)</a>]]>
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| | A) | This structure shows sucrose, the common disaccharide in table sugar. |
| | B) | This structure shows b-fructose, a common monosaccharide. |
| | C) | This structure shows the cyclic form of a carbohydrate formed with peptide bonds. |
| | D) | This structure shows the complex carbohydrate cellulose, which we are unable to digest. |
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11 | |
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This condensed structure represents |
| | A) | an amino acid. |
| | B) | a protein. |
| | C) | a carbohydrate. |
| | D) | a fatty acid. |
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12 | |
How many chiral carbons are in this structure for aspartic acid?
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| | A) | 1 |
| | B) | 2 |
| | C) | 3 |
| | D) | 4 |
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13 | |
Evidence indicates that trans-fatty acids in vegetable oil can raise cholesterol levels just as much as saturated fats. The proposed explanation for these experimental results is that the trans-fatty acids are |
| | A) | undergoing a reaction with hydrogen in the body and therefore acting as saturated compounds. |
| | B) | similar in structure to saturated fats and therefore mimic the behavior of the saturated fats. |
| | C) | being polymerized into amino acids, which cause accumulation of cholesterol in the blood stream. |
| | D) | being oxidized by the presence of natural catalysts, causing them to behave as saturated compounds. |
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14 | |
Which definition is false? |
| | A) | A fat is a triglyceride that melts below room temperature, often because of all the saturated fatty acids. |
| | B) | Triglycerides are composed of three fatty acids, often with several double bonds, and a trialcohol, glycerine. |
| | C) | As a food group, fats contain more Calories than carbohydrates. |
| | D) | Cholesterol is a lipid molecule that serves as part of cell membrane structures. |
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15 | |
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) | Both statements A and B are false. |
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