Living 6th Edition By Wendy Schiff, Traci
L. Keck Chapter 1-13
Question 1
Which of the following is considered a nutrient?
A. Water
B. Caffeine
C. Alcohol
D. Food coloring
Answer: A. Water
Rationale: Nutrients are substances that provide nourishment essential for growth and
maintenance. Water is one of the six classes of nutrients. Caffeine, alcohol, and food coloring
are not classified as nutrients.
Question 2
Which nutrient provides the body's primary source of energy?
A. Vitamins
B. Carbohydrates
C. Minerals
D. Water
Answer: B. Carbohydrates
,Rationale: Carbohydrates are the body's preferred energy source, especially for the brain and
nervous system.
Question 3
How many calories are provided by one gram of fat?
A. 4 kcal
B. 7 kcal
C. 9 kcal
D. 12 kcal
Answer: C. 9 kcal
Rationale: Fat provides 9 calories per gram, making it the most energy-dense macronutrient.
Question 4
Which nutrient is primarily responsible for tissue growth and repair?
A. Fat
B. Protein
C. Carbohydrate
D. Water
Answer: B. Protein
Rationale: Proteins supply amino acids needed for tissue growth, repair, enzymes, hormones,
and immune function.
Question 5
Evidence-based nutrition recommendations are based on:
A. Celebrity endorsements
B. Scientific research
C. Social media posts
D. Personal opinions
Answer: B. Scientific research
, Rationale: Nutrition recommendations should be supported by scientific evidence obtained
through well-designed research studies.
Question 6
The Dietary Reference Intakes (DRIs) are designed to:
A. Treat diseases
B. Establish nutrient recommendations for healthy people
C. Replace medical advice
D. Measure physical fitness
Answer: B. Establish nutrient recommendations for healthy people
Rationale: DRIs provide standards for nutrient intake used to plan and assess diets.
Question 7
Which food group is the richest source of vitamin C?
A. Fruits
B. Oils
C. Grains
D. Proteins
Answer: A. Fruits
Rationale: Citrus fruits, berries, and many fruits contain high levels of vitamin C.
Question 8
What is the primary function of dietary fiber?
A. Builds muscle
B. Improves digestion and bowel health
C. Increases blood pressure
D. Produces vitamins
Answer: B. Improves digestion and bowel health