ESTUDYR
PORTAGE NUTRITION BIOD 121 EXAM 3
BIOD 121 Essentials in Nutrition – Final Exam 3 Review
Ideal for mastering key nutrition concepts
This exam contains:
Questions and Answers: A comprehensive set of exam questions with detailed answers.
100% Guarantee Pass: Verified and accurate content designed to ensure success.
Multiple-Choice Format (A–D): Each question offers four answer options for clarity and
practice.
Correct Answer Included: Highlighted correct answers for easy review.
Expert-Verified Explanations: Detailed, expert-reviewed explanations for every question to
enhance understanding.
,ESTUDYR
1. Which of the following are examples of negative energy balance? (Select all that apply.)
A) During illness or trauma
B) Intentional weight loss
C) Overeating at a buffet
D) High-calorie diet for muscle gain
✅Correct Answers: A & B
Rationale: Negative energy balance occurs when calorie intake is lower than expenditure, such as during
illness (reduced intake) or intentional weight loss (increased expenditure or reduced intake).
2. What percentage of total energy expenditure does physical activity account for?
A) 5-10%
B) 15-40%
C) 50-70%
D) 80-90%
✅Correct Answer: B
Rationale: Physical activity varies widely but typically contributes 15-40% of total energy expenditure,
depending on activity level.
3. The thermic effect of food (TEF) accounts for approximately what percentage of daily energy
expenditure?
A) 2%
B) 10%
C) 25%
D) 50%
✅Correct Answer: B
Rationale: TEF is the energy used to digest, absorb, and metabolize food, making up ~10% of daily
energy expenditure.
4. Which of the following best describes thermogenesis?
A) Energy burned during exercise
B) A small, variable amount of energy from heat production (e.g., shivering, brown fat activity)
C) The main source of calorie burn in sedentary individuals
D) The process of storing fat
, ESTUDYR
✅Correct Answer: B
Rationale: Thermogenesis refers to heat production (e.g., shivering, brown fat) and contributes
minimally to total energy expenditure.
5. What is the normal BMI range?
A) <18.5
B) 18.5–24.9
C) 25–29.9
D) ≥30
✅Correct Answer: B
Rationale: A BMI of 18.5–24.9 is considered normal; <18.5 = underweight, 25–29.9 = overweight, ≥30 =
obese.
6. Which populations should NOT use standard BMI classifications? (Select all that apply.)
A) Children
B) Pregnant/breastfeeding women
C) Muscular individuals (e.g., athletes)
D) Elderly adults
E) Office workers
✅Correct Answers: A, B, C, D
Rationale: BMI may misclassify children, pregnant women, athletes (high muscle mass), and elderly
(loss of muscle mass) due to differences in body composition.
7. Which method uses low-dose radiation to measure body fat, lean mass, and bone density?
A) Skinfold calipers
B) DEXA scan (Dual-Energy X-ray Absorptiometry)
C) Bioelectrical impedance
D) Hydrostatic weighing
✅Correct Answer: B
Rationale: DEXA scans use X-rays to precisely measure fat, muscle, and bone composition.
8. Besides weight and fat distribution, what are other important obesity indicators? (Select two.)
PORTAGE NUTRITION BIOD 121 EXAM 3
BIOD 121 Essentials in Nutrition – Final Exam 3 Review
Ideal for mastering key nutrition concepts
This exam contains:
Questions and Answers: A comprehensive set of exam questions with detailed answers.
100% Guarantee Pass: Verified and accurate content designed to ensure success.
Multiple-Choice Format (A–D): Each question offers four answer options for clarity and
practice.
Correct Answer Included: Highlighted correct answers for easy review.
Expert-Verified Explanations: Detailed, expert-reviewed explanations for every question to
enhance understanding.
,ESTUDYR
1. Which of the following are examples of negative energy balance? (Select all that apply.)
A) During illness or trauma
B) Intentional weight loss
C) Overeating at a buffet
D) High-calorie diet for muscle gain
✅Correct Answers: A & B
Rationale: Negative energy balance occurs when calorie intake is lower than expenditure, such as during
illness (reduced intake) or intentional weight loss (increased expenditure or reduced intake).
2. What percentage of total energy expenditure does physical activity account for?
A) 5-10%
B) 15-40%
C) 50-70%
D) 80-90%
✅Correct Answer: B
Rationale: Physical activity varies widely but typically contributes 15-40% of total energy expenditure,
depending on activity level.
3. The thermic effect of food (TEF) accounts for approximately what percentage of daily energy
expenditure?
A) 2%
B) 10%
C) 25%
D) 50%
✅Correct Answer: B
Rationale: TEF is the energy used to digest, absorb, and metabolize food, making up ~10% of daily
energy expenditure.
4. Which of the following best describes thermogenesis?
A) Energy burned during exercise
B) A small, variable amount of energy from heat production (e.g., shivering, brown fat activity)
C) The main source of calorie burn in sedentary individuals
D) The process of storing fat
, ESTUDYR
✅Correct Answer: B
Rationale: Thermogenesis refers to heat production (e.g., shivering, brown fat) and contributes
minimally to total energy expenditure.
5. What is the normal BMI range?
A) <18.5
B) 18.5–24.9
C) 25–29.9
D) ≥30
✅Correct Answer: B
Rationale: A BMI of 18.5–24.9 is considered normal; <18.5 = underweight, 25–29.9 = overweight, ≥30 =
obese.
6. Which populations should NOT use standard BMI classifications? (Select all that apply.)
A) Children
B) Pregnant/breastfeeding women
C) Muscular individuals (e.g., athletes)
D) Elderly adults
E) Office workers
✅Correct Answers: A, B, C, D
Rationale: BMI may misclassify children, pregnant women, athletes (high muscle mass), and elderly
(loss of muscle mass) due to differences in body composition.
7. Which method uses low-dose radiation to measure body fat, lean mass, and bone density?
A) Skinfold calipers
B) DEXA scan (Dual-Energy X-ray Absorptiometry)
C) Bioelectrical impedance
D) Hydrostatic weighing
✅Correct Answer: B
Rationale: DEXA scans use X-rays to precisely measure fat, muscle, and bone composition.
8. Besides weight and fat distribution, what are other important obesity indicators? (Select two.)
