NUSCTX 10 MIDTERM 1 PRACTICE TEST | NUTRITIONAL SCIENCES UC
BERKELEY | 250 QUESTIONS & CORRECT DETAILED ANSWERS
Questions 1–250
SECTION 1: Introduction to Nutrition & DRIs (Questions 1–25)
1. Which of the following is NOT considered an essential nutrient?
A) Carbohydrates
B) Phytochemicals
C) Proteins
D) Vitamins
Answer B: Phytochemicals are beneficial but not essential for life;
essential nutrients must be obtained from the diet
Rationale: Essential nutrients cannot be synthesized in sufficient
amounts by the body.
,2. What is the primary function of carbohydrates in the diet?
A) Building and repairing tissues
B) Providing energy
C) Regulating metabolic processes
D) Insulating the body
Answer B: Carbohydrates are the body's preferred source of energy,
providing 4 kcal per gram
Rationale: Glucose is the primary fuel for the brain and red blood
cells.
3. The Recommended Dietary Allowance (RDA) is defined as:
A) The minimum amount of a nutrient needed to prevent deficiency
B) The average daily nutrient intake level sufficient to meet the needs
of nearly all (97-98%) healthy individuals
C) The maximum safe daily intake of a nutrient
D) The amount of a nutrient consumed in a typical diet
Answer B: RDA is based on scientific evidence and used for planning
nutritionally adequate diets
,Rationale: RDAs are established for 97-98% of the population.
4. A nutrient that provides energy is:
A) Vitamin C
B) Fat
C) Calcium
D) Iron
Answer B: Fat is an energy-yielding nutrient, providing 9 kcal per
gram
Rationale: Carbohydrates, proteins, and fats provide energy; vitamins
and minerals do not.
5. What is the Acceptable Macronutrient Distribution Range
(AMDR) for carbohydrates?
A) 10-20% of total calories
B) 45-65% of total calories
C) 20-35% of total calories
D) 10-35% of total calories
, Answer B: The AMDR for carbohydrates is 45-65% of total daily
calories
Rationale: AMDRs are established for carbohydrates, proteins, and
fats to reduce chronic disease risk.
6. The AMDR for fats is:
A) 10-20% of total calories
B) 45-65% of total calories
C) 20-35% of total calories
D) 10-35% of total calories
Answer C: The AMDR for fats is 20-35% of total calories
Rationale: Dietary fats are essential for health, but intake should be
moderate.
7. The AMDR for proteins is:
A) 10-20% of total calories
B) 45-65% of total calories
C) 20-35% of total calories
D) 10-35% of total calories
BERKELEY | 250 QUESTIONS & CORRECT DETAILED ANSWERS
Questions 1–250
SECTION 1: Introduction to Nutrition & DRIs (Questions 1–25)
1. Which of the following is NOT considered an essential nutrient?
A) Carbohydrates
B) Phytochemicals
C) Proteins
D) Vitamins
Answer B: Phytochemicals are beneficial but not essential for life;
essential nutrients must be obtained from the diet
Rationale: Essential nutrients cannot be synthesized in sufficient
amounts by the body.
,2. What is the primary function of carbohydrates in the diet?
A) Building and repairing tissues
B) Providing energy
C) Regulating metabolic processes
D) Insulating the body
Answer B: Carbohydrates are the body's preferred source of energy,
providing 4 kcal per gram
Rationale: Glucose is the primary fuel for the brain and red blood
cells.
3. The Recommended Dietary Allowance (RDA) is defined as:
A) The minimum amount of a nutrient needed to prevent deficiency
B) The average daily nutrient intake level sufficient to meet the needs
of nearly all (97-98%) healthy individuals
C) The maximum safe daily intake of a nutrient
D) The amount of a nutrient consumed in a typical diet
Answer B: RDA is based on scientific evidence and used for planning
nutritionally adequate diets
,Rationale: RDAs are established for 97-98% of the population.
4. A nutrient that provides energy is:
A) Vitamin C
B) Fat
C) Calcium
D) Iron
Answer B: Fat is an energy-yielding nutrient, providing 9 kcal per
gram
Rationale: Carbohydrates, proteins, and fats provide energy; vitamins
and minerals do not.
5. What is the Acceptable Macronutrient Distribution Range
(AMDR) for carbohydrates?
A) 10-20% of total calories
B) 45-65% of total calories
C) 20-35% of total calories
D) 10-35% of total calories
, Answer B: The AMDR for carbohydrates is 45-65% of total daily
calories
Rationale: AMDRs are established for carbohydrates, proteins, and
fats to reduce chronic disease risk.
6. The AMDR for fats is:
A) 10-20% of total calories
B) 45-65% of total calories
C) 20-35% of total calories
D) 10-35% of total calories
Answer C: The AMDR for fats is 20-35% of total calories
Rationale: Dietary fats are essential for health, but intake should be
moderate.
7. The AMDR for proteins is:
A) 10-20% of total calories
B) 45-65% of total calories
C) 20-35% of total calories
D) 10-35% of total calories
