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All of the following statements about many popular diets are true except


A) they promote quick weight loss that ends up being primarily water and lean muscle mass.
B) they help people make permanent changes in eating habits.
C) they often recommend expensive supplements.
D) they use testimonials from famous people.

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Xenical is a weight-loss drug that works in the digestive system


A) to substitute xylose for glucose.
B) to block digestion of about one-third of the fat in the food we eat.
C) to produce a full feeling that decreases hunger.
D) as an artificial fat.

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Cycles of loss and regain of weight are called _______________. With each cycle, it is easier to gain weight and harder to lose.


A) plateauing
B) energy balancing
C) mindful eating
D) yo-yo dieting

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Carol eats 800 kilocalories a day to lose weight. She is 40 years old. Carol has been walking briskly 60 minutes daily for the past 2 months. In her younger days she lifted weights, but she has lost considerable lean body mass over the years because of inactivity. Recently, Carol was diagnosed with hypothyroidism, which lowers metabolism. Which of the following factors increases Carol's energy output and promotes weight loss?


A) Her 800-kilocalorie diet
B) Her age
C) Her loss of lean body mass
D) Her walking routine

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Which of the following is true about basal metabolism?


A) It represents about 30 percent of total energy expenditure.
B) It is energy expenditure to maintain heartbeat, respiration, other basic functions, and daily activities.
C) It represents about 60 percent to 70 percent of total calories used by a sedentary person during each day.
D) It includes the energy used to digest food.

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The method for determining energy expenditure that involves the measurement of heat given off by the body during a select period of time in an insulated chamber is


A) direct calorimetry.
B) indirect calorimetry.
C) thermocalorimetry.
D) bomb calorimetry.

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The best way to treat an underweight person is to advise him or her to


A) eat high-fat foods such as cream, cheeses, ice cream, and ground beef.
B) stop exercising.
C) eat calorie-dense foods higher in vegetable fat like nuts and seeds.
D) eat high-calorie foods at the beginning of a meal.

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All of the following contribute to total energy expenditure except


A) basal metabolic rate.
B) thermic effect of food.
C) energy content of food.
D) adaptive thermogenesis.

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For a woman who is 1.63 meters tall and weighs 72 kilograms, the body mass index would be


A) 18.
B) 23.
C) 27.
D) 32.

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The name for minimum energy expended to keep a resting, awake body alive is _______________. This represents about 60% to 70% of total energy expenditure.


A) ATP
B) basal metabolism
C) thermogenesis
D) thermic effect of food

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B

The expenditure of energy to produce heat in response to a cold environment and as a result of overfeeding is called _______________.


A) adaptive thermogenesis
B) thermic effect of cold
C) heat metabolism
D) thermic metabolsim

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As one finds his or her weight loss slowing during a weight control program, the best practice is to


A) restrict more food choices.
B) reduce food intake to 1,000 kilocalories.
C) go off the weight control program and take a break.
D) increase physical activity.

Correct Answer

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When individuals lose weight quickly, most of the weight lost is from


A) fat, water, and glycogen.
B) water, muscle tissue, and bone.
C) water, glycogen, and muscle tissue.
D) fat, water, and muscle tissue.

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Which of the following is true about use of diet pills for weight reduction?


A) Diet pills do not lead to long-term changes in weight and tend to have side effects.
B) Amphetamines are not addictive.
C) Oral cholecystokinin is absorbed and suppresses hunger.
D) Diuretics lead to significant fat loss.

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All of the following are true about energy expenditure except


A) the thermic effect of food represents about 5% to 10% of total energy expenditure.
B) physical activity accounts for 45% to 55% of total energy expenditure.
C) basal metabolism accounts for 60% to 70% of total energy expenditure.
D) of all the organs, the liver accounts for the highest proportion of basal metabolism.

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The calorie cost of the thermic effect of food is ___ of energy consumed.


A) 1% to 2%
B) 5% to 10%
C) 15% to 20%
D) 20% to 25%

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The best formal weight loss program for the average dieter is


A) Weight Watchers.
B) Jenny Craig.
C) Nutri-System.
D) Diet Center.

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Which of the following is not associated with an increase in basal metabolism?


A) An increase in body temperature
B) A low calorie intake
C) An increase in lean body mass
D) Caffeine use

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B

Which of the following testing methods is considered the most accurate way of measuring percent body fat?


A) Underwater weighing
B) Skinfolds
C) Infrared light
D) Bioelectrical impedance

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Men with body fat levels greater than _____ have increased health risks.


A) 20%
B) 24%
C) 30%
D) 35%

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B

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