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| 1 | |
One serving of a food has 2 g of saturated fat. What % Daily Value for saturated fat would appear on a food label for this food? (See bottom of figure 25.2 for information needed to answer this question.) |
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| 2 | |
An active teenage boy has a daily intake of 3000 kcal/day. What is the maximum amount (weight) of total fats he should consume according to the Daily Values? |
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| 3 | |
If the teenager in question 2 eats a serving of food that has a total fat content of 10 g/serving, what is his % Daily Value for total fat? |
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| 4 | |
Suppose the food in question 3 is in a package that lists a serving size of 1/2 cup with 4 servings in the package. If the teenager eats half of the contents of the package (1 cup), how much of his % Daily Value does he consume? |
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| 5 | |
Why does a vegetarian usually have to be more careful about his or her diet than a person who includes meat in the diet? |
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| 6 | |
Explain why a person suffering from copper deficiency feels tired all the time. |
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| 7 | |
Some people claim that occasionally fasting for short periods can be beneficial. How can fasts be damaging? |
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| 8 | |
Why can some people lose weight on a 1200 kcal/day diet and others cannot? |
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| 9 | |
Lotta Bulk, a muscle builder, wanted to increase her muscle mass. Knowing that proteins are the main components of muscle, she began a high-protein diet in which most of her daily kilocalories were supplied by proteins. She also exercised regularly with heavy weights. After 3 months of this diet and exercise program, Lotta increased her muscle mass, but not any more than her friend, who did the same exercises but did not have a high-protein diet. Explain what happened. Was Lotta in positive or negative nitrogen balance? |
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| 10 | |
On learning that sweat evaporation results in the loss of calories, an anatomy and physiology student enters a sauna in an attempt to lose weight. He reasons that a liter (about a quart) of water weighs 1000 g, which is equivalent to 580,000 cal or 580 kcal of heat when lost as sweat. Instead of reducing his diet by 580 kcal/day, if he loses a liter of sweat every day in the sauna, he believes he will lose about a pound of fat a week. Will this approach work? Explain. |
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