BIO 121 Module 3 | Essentials in Nutrition Exam Q&A |
Portage Learning
Here are 100 original multiple-choice practice questions for BIO 121 Module 3:
Nutrition. This set assumes Module 3 covers energy balance, body weight regulation,
obesity, weight management, eating disorders, physical activity, and fitness
nutrition. They are not official examination questions and are not copied from any
textbook, test bank, or copyrighted source.
Question 1:
Energy balance occurs when:
A. Calorie intake exceeds calorie expenditure
B. Calorie intake equals calorie expenditure
C. Calorie expenditure exceeds calorie intake
D. No calories are consumed
Correct answer: B
Rationale:
Energy balance means calories consumed equal calories expended, resulting in stable
body weight.
Question 2:
Positive energy balance leads to:
A. Weight loss
B. Weight gain
C. Weight maintenance
D. Dehydration
Correct answer: B
Rationale:
Consuming more calories than expended leads to weight gain over time.
Question 3:
Negative energy balance leads to:
A. Weight loss
B. Weight gain
,C. Weight maintenance
D. Fluid overload
Correct answer: A
Rationale:
Expending more calories than consumed leads to weight loss.
Question 4:
Which component of total energy expenditure typically accounts for the largest
proportion?
A. Physical activity
B. Thermic effect of food
C. Basal metabolic rate
D. Exercise
Correct answer: C
Rationale:
BMR accounts for approximately 60–75% of total daily energy expenditure.
Question 5:
Basal metabolic rate (BMR) is influenced by all of the following EXCEPT:
A. Age
B. Body composition
C. Hair color
D. Gender
Correct answer: C
Rationale:
Hair color does not affect BMR. Age, body composition, and gender do influence
metabolic rate.
Question 6:
Which factor increases basal metabolic rate?
A. Aging
B. Higher lean body mass
C. Starvation
D. Loss of muscle mass
,Correct answer: B
Rationale:
Greater lean body mass (muscle) increases BMR because muscle is metabolically
active.
Question 7:
The thermic effect of food (TEF) represents:
A. Energy used during exercise
B. Energy used to digest, absorb, and metabolize nutrients
C. Energy stored as fat
D. Energy used at rest
Correct answer: B
Rationale:
TEF is the energy cost of processing food, typically about 10% of total energy
expenditure.
Question 8:
Which macronutrient has the highest thermic effect of food?
A. Carbohydrate
B. Fat
C. Protein
D. Alcohol
Correct answer: C
Rationale:
Protein has the highest TEF, requiring 20–30% of its calories for processing.
Question 9:
The estimated energy requirement (EER) is:
A. The minimum calories needed for survival
B. The average dietary energy intake predicted to maintain energy balance
C. The maximum calories allowed per day
D. The calories from fat only
Correct answer: B
, Rationale:
EER estimates calorie needs for maintaining energy balance based on age, sex, activity,
and body size.
Question 10:
Which method directly measures energy expenditure by measuring heat production?
A. Indirect calorimetry
B. Direct calorimetry
C. Doubly labeled water
D. BMI calculation
Correct answer: B
Rationale:
Direct calorimetry measures heat produced by the body to determine energy
expenditure.
Question 11:
Indirect calorimetry estimates energy expenditure by measuring:
A. Heat production
B. Oxygen consumption and carbon dioxide production
C. Body weight
D. Heart rate
Correct answer: B
Rationale:
Indirect calorimetry uses respiratory gas exchange to estimate energy expenditure.
Question 12:
Body mass index (BMI) is calculated using:
A. Height and weight
B. Age and sex
C. Waist circumference
D. Body fat percentage
Correct answer: A
Rationale:
BMI = weight (kg) ÷ height (m²).
Portage Learning
Here are 100 original multiple-choice practice questions for BIO 121 Module 3:
Nutrition. This set assumes Module 3 covers energy balance, body weight regulation,
obesity, weight management, eating disorders, physical activity, and fitness
nutrition. They are not official examination questions and are not copied from any
textbook, test bank, or copyrighted source.
Question 1:
Energy balance occurs when:
A. Calorie intake exceeds calorie expenditure
B. Calorie intake equals calorie expenditure
C. Calorie expenditure exceeds calorie intake
D. No calories are consumed
Correct answer: B
Rationale:
Energy balance means calories consumed equal calories expended, resulting in stable
body weight.
Question 2:
Positive energy balance leads to:
A. Weight loss
B. Weight gain
C. Weight maintenance
D. Dehydration
Correct answer: B
Rationale:
Consuming more calories than expended leads to weight gain over time.
Question 3:
Negative energy balance leads to:
A. Weight loss
B. Weight gain
,C. Weight maintenance
D. Fluid overload
Correct answer: A
Rationale:
Expending more calories than consumed leads to weight loss.
Question 4:
Which component of total energy expenditure typically accounts for the largest
proportion?
A. Physical activity
B. Thermic effect of food
C. Basal metabolic rate
D. Exercise
Correct answer: C
Rationale:
BMR accounts for approximately 60–75% of total daily energy expenditure.
Question 5:
Basal metabolic rate (BMR) is influenced by all of the following EXCEPT:
A. Age
B. Body composition
C. Hair color
D. Gender
Correct answer: C
Rationale:
Hair color does not affect BMR. Age, body composition, and gender do influence
metabolic rate.
Question 6:
Which factor increases basal metabolic rate?
A. Aging
B. Higher lean body mass
C. Starvation
D. Loss of muscle mass
,Correct answer: B
Rationale:
Greater lean body mass (muscle) increases BMR because muscle is metabolically
active.
Question 7:
The thermic effect of food (TEF) represents:
A. Energy used during exercise
B. Energy used to digest, absorb, and metabolize nutrients
C. Energy stored as fat
D. Energy used at rest
Correct answer: B
Rationale:
TEF is the energy cost of processing food, typically about 10% of total energy
expenditure.
Question 8:
Which macronutrient has the highest thermic effect of food?
A. Carbohydrate
B. Fat
C. Protein
D. Alcohol
Correct answer: C
Rationale:
Protein has the highest TEF, requiring 20–30% of its calories for processing.
Question 9:
The estimated energy requirement (EER) is:
A. The minimum calories needed for survival
B. The average dietary energy intake predicted to maintain energy balance
C. The maximum calories allowed per day
D. The calories from fat only
Correct answer: B
, Rationale:
EER estimates calorie needs for maintaining energy balance based on age, sex, activity,
and body size.
Question 10:
Which method directly measures energy expenditure by measuring heat production?
A. Indirect calorimetry
B. Direct calorimetry
C. Doubly labeled water
D. BMI calculation
Correct answer: B
Rationale:
Direct calorimetry measures heat produced by the body to determine energy
expenditure.
Question 11:
Indirect calorimetry estimates energy expenditure by measuring:
A. Heat production
B. Oxygen consumption and carbon dioxide production
C. Body weight
D. Heart rate
Correct answer: B
Rationale:
Indirect calorimetry uses respiratory gas exchange to estimate energy expenditure.
Question 12:
Body mass index (BMI) is calculated using:
A. Height and weight
B. Age and sex
C. Waist circumference
D. Body fat percentage
Correct answer: A
Rationale:
BMI = weight (kg) ÷ height (m²).
