BIOD 121 Essentials in Nutrition
Modules 1–6 + Final • 250 Original Exam-Style Practice Questions with Answers & Rationales
Format: Multiple choice (A–D) • Question, choices, correct answer, and rationale appear together • Questions and
answers use different colors
Module 1 — Foundations of Nutrition & Energy
1. What is the primary distinction between hunger and appetite?
A. Hunger is a physiological drive to eat; appetite is a desire to eat influenced by internal and external cues.
B. Hunger is always emotional; appetite is always physiological.
C. Hunger occurs only after exercise; appetite occurs only before meals.
D. Hunger refers only to thirst; appetite refers only to food texture.
Correct Answer: A. Hunger is a physiological drive to eat; appetite is a desire to eat influenced by internal and
external cues.
Rationale: Hunger reflects physiological need, while appetite is influenced by learned, sensory, social, and environmental cues.
2. Which group contains the three macronutrients that provide energy?
A. Vitamins, minerals, and water
B. Carbohydrate, protein, and fat
C. Fiber, water, and minerals
D. Vitamins, protein, and water
Correct Answer: B. Carbohydrate, protein, and fat
Rationale: Carbohydrate, protein, and fat are the energy-yielding macronutrients.
3. Which nutrient provides about 9 kcal per gram?
A. Carbohydrate
B. Protein
C. Fat
D. Water
Correct Answer: C. Fat
Rationale: Fat provides approximately 9 kcal/g, compared with about 4 kcal/g for carbohydrate and protein.
4. Which nutrient provides about 4 kcal per gram?
A. Carbohydrate and protein
B. Fat and water
C. Vitamins and minerals
D. Alcohol only
Correct Answer: A. Carbohydrate and protein
Rationale: Carbohydrate and protein each provide about 4 kcal/g.
BIOD 121 Original Practice Bank • Page 1
,5. What is a nutrient?
A. A substance in food that supports body functions, growth, or maintenance
B. Any substance that makes food taste better
C. Only a substance that supplies calories
D. Only a vitamin or mineral
Correct Answer: A. A substance in food that supports body functions, growth, or maintenance
Rationale: Nutrients are substances needed for energy, growth, maintenance, regulation, or other physiological functions.
6. Which is an example of an inorganic nutrient?
A. Vitamin C
B. Glucose
C. Calcium
D. Fatty acid
Correct Answer: C. Calcium
Rationale: Minerals such as calcium are inorganic nutrients.
7. Which is an organic nutrient?
A. Water
B. Calcium
C. Vitamin C
D. Sodium chloride
Correct Answer: C. Vitamin C
Rationale: Vitamins are organic compounds; water and minerals are inorganic.
8. Which food-choice factor is an external influence on eating?
A. Food advertising
B. Blood glucose concentration
C. Stomach emptying
D. Cellular ATP demand
Correct Answer: A. Food advertising
Rationale: Advertising is an environmental influence that can affect food choices.
9. What is the main purpose of a nutrition assessment?
A. To identify nutritional status, risks, and needs
B. To diagnose every disease
C. To determine food preferences only
D. To replace a medical history
Correct Answer: A. To identify nutritional status, risks, and needs
Rationale: Nutrition assessment gathers information needed to identify nutrition-related problems and guide care.
10. Which measure compares a person's weight with height to screen for weight status?
A. BMI
B. Basal metabolic rate
C. RDA
D. UL
Correct Answer: A. BMI
Rationale: Body mass index uses weight and height as a screening measure of weight status.
BIOD 121 Original Practice Bank • Page 2
,11. Which statement best distinguishes an essential nutrient from a nonessential nutrient?
A. An essential nutrient must be supplied by the diet when the body cannot make enough of it.
B. An essential nutrient always provides calories.
C. A nonessential nutrient is never used by cells.
D. Essential nutrients are always vitamins.
Correct Answer: A. An essential nutrient must be supplied by the diet when the body cannot make enough of it.
Rationale: Essential nutrients are required for normal function and must be obtained from the diet when the body cannot
synthesize sufficient amounts.
12. Which macronutrient is most concentrated in energy per gram?
A. Carbohydrate
B. Protein
C. Fat
D. Fiber
Correct Answer: C. Fat
Rationale: Fat provides about 9 kcal/g, more than carbohydrate or protein at about 4 kcal/g.
13. A food provides 20 g carbohydrate, 10 g protein, and 5 g fat. Approximately how much energy does it
provide?
A. 145 kcal
B. 165 kcal
C. 185 kcal
D. 205 kcal
Correct Answer: B. 165 kcal
Rationale: Carbohydrate: 20×4=80 kcal; protein: 10×4=40 kcal; fat: 5×9=45 kcal; total = 165 kcal.
14. For a student reviewing basic nutrition, which choice best reflects a balanced approach to nutrition?
A. Include a variety of nutrient-dense foods across food groups
B. Eat only one food group
C. Avoid all dietary fat
D. Use supplements instead of meals
Correct Answer: A. Include a variety of nutrient-dense foods across food groups
Rationale: Variety and nutrient density improve the likelihood of meeting nutrient needs.
15. In routine nutrition counseling, which choice best reflects a balanced approach to nutrition?
A. Include a variety of nutrient-dense foods across food groups
B. Eat only one food group
C. Avoid all dietary fat
D. Use supplements instead of meals
Correct Answer: A. Include a variety of nutrient-dense foods across food groups
Rationale: Variety and nutrient density improve the likelihood of meeting nutrient needs.
BIOD 121 Original Practice Bank • Page 3
, 16. When preparing for an introductory nutrition exam, which choice best reflects a balanced approach
to nutrition?
A. Include a variety of nutrient-dense foods across food groups
B. Eat only one food group
C. Avoid all dietary fat
D. Use supplements instead of meals
Correct Answer: A. Include a variety of nutrient-dense foods across food groups
Rationale: Variety and nutrient density improve the likelihood of meeting nutrient needs.
17. For a patient education discussion, which choice best reflects a balanced approach to nutrition?
A. Include a variety of nutrient-dense foods across food groups
B. Eat only one food group
C. Avoid all dietary fat
D. Use supplements instead of meals
Correct Answer: A. Include a variety of nutrient-dense foods across food groups
Rationale: Variety and nutrient density improve the likelihood of meeting nutrient needs.
18. When reviewing a food-and-health scenario, which choice best reflects a balanced approach to
nutrition?
A. Include a variety of nutrient-dense foods across food groups
B. Eat only one food group
C. Avoid all dietary fat
D. Use supplements instead of meals
Correct Answer: A. Include a variety of nutrient-dense foods across food groups
Rationale: Variety and nutrient density improve the likelihood of meeting nutrient needs.
19. For a student reviewing basic nutrition, which choice best reflects a balanced approach to nutrition?
A. Include a variety of nutrient-dense foods across food groups
B. Eat only one food group
C. Avoid all dietary fat
D. Use supplements instead of meals
Correct Answer: A. Include a variety of nutrient-dense foods across food groups
Rationale: Variety and nutrient density improve the likelihood of meeting nutrient needs.
20. In routine nutrition counseling, which choice best reflects a balanced approach to nutrition?
A. Include a variety of nutrient-dense foods across food groups
B. Eat only one food group
C. Avoid all dietary fat
D. Use supplements instead of meals
Correct Answer: A. Include a variety of nutrient-dense foods across food groups
Rationale: Variety and nutrient density improve the likelihood of meeting nutrient needs.
BIOD 121 Original Practice Bank • Page 4
Modules 1–6 + Final • 250 Original Exam-Style Practice Questions with Answers & Rationales
Format: Multiple choice (A–D) • Question, choices, correct answer, and rationale appear together • Questions and
answers use different colors
Module 1 — Foundations of Nutrition & Energy
1. What is the primary distinction between hunger and appetite?
A. Hunger is a physiological drive to eat; appetite is a desire to eat influenced by internal and external cues.
B. Hunger is always emotional; appetite is always physiological.
C. Hunger occurs only after exercise; appetite occurs only before meals.
D. Hunger refers only to thirst; appetite refers only to food texture.
Correct Answer: A. Hunger is a physiological drive to eat; appetite is a desire to eat influenced by internal and
external cues.
Rationale: Hunger reflects physiological need, while appetite is influenced by learned, sensory, social, and environmental cues.
2. Which group contains the three macronutrients that provide energy?
A. Vitamins, minerals, and water
B. Carbohydrate, protein, and fat
C. Fiber, water, and minerals
D. Vitamins, protein, and water
Correct Answer: B. Carbohydrate, protein, and fat
Rationale: Carbohydrate, protein, and fat are the energy-yielding macronutrients.
3. Which nutrient provides about 9 kcal per gram?
A. Carbohydrate
B. Protein
C. Fat
D. Water
Correct Answer: C. Fat
Rationale: Fat provides approximately 9 kcal/g, compared with about 4 kcal/g for carbohydrate and protein.
4. Which nutrient provides about 4 kcal per gram?
A. Carbohydrate and protein
B. Fat and water
C. Vitamins and minerals
D. Alcohol only
Correct Answer: A. Carbohydrate and protein
Rationale: Carbohydrate and protein each provide about 4 kcal/g.
BIOD 121 Original Practice Bank • Page 1
,5. What is a nutrient?
A. A substance in food that supports body functions, growth, or maintenance
B. Any substance that makes food taste better
C. Only a substance that supplies calories
D. Only a vitamin or mineral
Correct Answer: A. A substance in food that supports body functions, growth, or maintenance
Rationale: Nutrients are substances needed for energy, growth, maintenance, regulation, or other physiological functions.
6. Which is an example of an inorganic nutrient?
A. Vitamin C
B. Glucose
C. Calcium
D. Fatty acid
Correct Answer: C. Calcium
Rationale: Minerals such as calcium are inorganic nutrients.
7. Which is an organic nutrient?
A. Water
B. Calcium
C. Vitamin C
D. Sodium chloride
Correct Answer: C. Vitamin C
Rationale: Vitamins are organic compounds; water and minerals are inorganic.
8. Which food-choice factor is an external influence on eating?
A. Food advertising
B. Blood glucose concentration
C. Stomach emptying
D. Cellular ATP demand
Correct Answer: A. Food advertising
Rationale: Advertising is an environmental influence that can affect food choices.
9. What is the main purpose of a nutrition assessment?
A. To identify nutritional status, risks, and needs
B. To diagnose every disease
C. To determine food preferences only
D. To replace a medical history
Correct Answer: A. To identify nutritional status, risks, and needs
Rationale: Nutrition assessment gathers information needed to identify nutrition-related problems and guide care.
10. Which measure compares a person's weight with height to screen for weight status?
A. BMI
B. Basal metabolic rate
C. RDA
D. UL
Correct Answer: A. BMI
Rationale: Body mass index uses weight and height as a screening measure of weight status.
BIOD 121 Original Practice Bank • Page 2
,11. Which statement best distinguishes an essential nutrient from a nonessential nutrient?
A. An essential nutrient must be supplied by the diet when the body cannot make enough of it.
B. An essential nutrient always provides calories.
C. A nonessential nutrient is never used by cells.
D. Essential nutrients are always vitamins.
Correct Answer: A. An essential nutrient must be supplied by the diet when the body cannot make enough of it.
Rationale: Essential nutrients are required for normal function and must be obtained from the diet when the body cannot
synthesize sufficient amounts.
12. Which macronutrient is most concentrated in energy per gram?
A. Carbohydrate
B. Protein
C. Fat
D. Fiber
Correct Answer: C. Fat
Rationale: Fat provides about 9 kcal/g, more than carbohydrate or protein at about 4 kcal/g.
13. A food provides 20 g carbohydrate, 10 g protein, and 5 g fat. Approximately how much energy does it
provide?
A. 145 kcal
B. 165 kcal
C. 185 kcal
D. 205 kcal
Correct Answer: B. 165 kcal
Rationale: Carbohydrate: 20×4=80 kcal; protein: 10×4=40 kcal; fat: 5×9=45 kcal; total = 165 kcal.
14. For a student reviewing basic nutrition, which choice best reflects a balanced approach to nutrition?
A. Include a variety of nutrient-dense foods across food groups
B. Eat only one food group
C. Avoid all dietary fat
D. Use supplements instead of meals
Correct Answer: A. Include a variety of nutrient-dense foods across food groups
Rationale: Variety and nutrient density improve the likelihood of meeting nutrient needs.
15. In routine nutrition counseling, which choice best reflects a balanced approach to nutrition?
A. Include a variety of nutrient-dense foods across food groups
B. Eat only one food group
C. Avoid all dietary fat
D. Use supplements instead of meals
Correct Answer: A. Include a variety of nutrient-dense foods across food groups
Rationale: Variety and nutrient density improve the likelihood of meeting nutrient needs.
BIOD 121 Original Practice Bank • Page 3
, 16. When preparing for an introductory nutrition exam, which choice best reflects a balanced approach
to nutrition?
A. Include a variety of nutrient-dense foods across food groups
B. Eat only one food group
C. Avoid all dietary fat
D. Use supplements instead of meals
Correct Answer: A. Include a variety of nutrient-dense foods across food groups
Rationale: Variety and nutrient density improve the likelihood of meeting nutrient needs.
17. For a patient education discussion, which choice best reflects a balanced approach to nutrition?
A. Include a variety of nutrient-dense foods across food groups
B. Eat only one food group
C. Avoid all dietary fat
D. Use supplements instead of meals
Correct Answer: A. Include a variety of nutrient-dense foods across food groups
Rationale: Variety and nutrient density improve the likelihood of meeting nutrient needs.
18. When reviewing a food-and-health scenario, which choice best reflects a balanced approach to
nutrition?
A. Include a variety of nutrient-dense foods across food groups
B. Eat only one food group
C. Avoid all dietary fat
D. Use supplements instead of meals
Correct Answer: A. Include a variety of nutrient-dense foods across food groups
Rationale: Variety and nutrient density improve the likelihood of meeting nutrient needs.
19. For a student reviewing basic nutrition, which choice best reflects a balanced approach to nutrition?
A. Include a variety of nutrient-dense foods across food groups
B. Eat only one food group
C. Avoid all dietary fat
D. Use supplements instead of meals
Correct Answer: A. Include a variety of nutrient-dense foods across food groups
Rationale: Variety and nutrient density improve the likelihood of meeting nutrient needs.
20. In routine nutrition counseling, which choice best reflects a balanced approach to nutrition?
A. Include a variety of nutrient-dense foods across food groups
B. Eat only one food group
C. Avoid all dietary fat
D. Use supplements instead of meals
Correct Answer: A. Include a variety of nutrient-dense foods across food groups
Rationale: Variety and nutrient density improve the likelihood of meeting nutrient needs.
BIOD 121 Original Practice Bank • Page 4
