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ISSA Nutrition Final Exam 2026/2027 Actual
Exam | 100% Correct Answers with Detailed
Rationales | Pass Guaranteed - A+ Graded
Section 1: Nutrition Foundations and Macronutrients (20 Questions)
Q1: The primary function of carbohydrates in the body is:
A. Building cell membranes
B. Providing energy [CORRECT]
C. Synthesizing hormones
D. Transporting vitamins
Correct Answer: B
Rationale: Carbohydrates provide 4 kcal per gram and serve as the body's preferred energy
source, especially for the brain and high-intensity exercise. Options A and C are functions of
lipids. Option D describes protein and lipid transport functions.
Q2: A client weighs 80 kg and requires 1.6 g of protein per kg body weight daily. What is their
daily protein requirement?
A. 96 grams
B. 112 grams
C. 128 grams [CORRECT]
D. 144 grams
Correct Answer: C
Rationale: Calculation: 80 kg × 1.6 g/kg = 128 grams of protein daily. This falls within the
optimal range for active individuals (1.4-2.0 g/kg) supporting muscle protein synthesis and
recovery.
Q3: Which type of fatty acid contains multiple double bonds in its carbon chain?
A. Saturated fatty acid
B. Monounsaturated fatty acid
C. Polyunsaturated fatty acid [CORRECT]
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D. Trans fatty acid
Correct Answer: C
Rationale: Polyunsaturated fatty acids (PUFAs) contain two or more double bonds (e.g., omega-3
and omega-6). Monounsaturated have one double bond; saturated have none. Trans fats are a
specific geometric configuration of unsaturated fats.
Q4: The glycemic index (GI) measures:
A. Total carbohydrate content
B. The rate at which a carbohydrate raises blood glucose [CORRECT]
C. Fiber content
D. Protein quality
Correct Answer: B
Rationale: GI measures how quickly a carbohydrate-containing food raises blood glucose
compared to pure glucose (GI = 100). Lower GI foods (≤55) produce gradual rises; high GI
foods (≥70) cause rapid spikes.
Q5: Which macronutrient has the highest thermic effect of food (TEF)?
A. Carbohydrate
B. Fat
C. Protein [CORRECT]
D. Alcohol
Correct Answer: C
Rationale: Protein has a TEF of 20-30%, meaning 20-30% of its energy is expended during
digestion and metabolism. Carbohydrates: 5-10%. Fat: 0-3%. This makes protein valuable for
metabolic health and weight management.
Q6: A complete protein source contains:
A. All essential amino acids in adequate amounts [CORRECT]
B. Only branched-chain amino acids
C. High levels of collagen
D. Only non-essential amino acids
Correct Answer: A
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Rationale: Complete proteins contain all nine essential amino acids (histidine, isoleucine,
leucine, lysine, methionine, phenylalanine, threonine, tryptophan, valine) in sufficient quantities.
Animal sources and soy are complete; most plant proteins require combining.
Q7: The recommended dietary allowance (RDA) for carbohydrates for adults is:
A. 45-65% of total daily calories [CORRECT]
B. 10-35% of total daily calories
C. 20-35% of total daily calories
D. 5-10% of total daily calories
Correct Answer: A
Rationale: The Acceptable Macronutrient Distribution Range (AMDR) for carbohydrates is 45-
65% of total calories. This supports brain function (minimum 130g/day) and physical activity
while allowing dietary flexibility.
Q8: Which carbohydrate is stored in muscle and liver tissue for energy?
A. Glucose
B. Fructose
C. Glycogen [CORRECT]
D. Cellulose
Correct Answer: C
Rationale: Glycogen is the storage form of glucose in animals. The liver stores ~100g for blood
glucose maintenance; muscles store ~400g for local energy. Glucose is the circulating form;
fructose is a monosaccharide; cellulose is indigestible fiber.
Q9: A client consumes 2,500 calories daily with 30% from fat. How many grams of fat do they
consume?
A. 75 grams
B. 83 grams [CORRECT]
C. 92 grams
D. 100 grams
Correct Answer: B
Rationale: Calculation: 2,500 calories × 0.30 = 750 fat calories ÷ 9 cal/g = 83.3 grams. Fat
provides 9 kcal per gram, compared to 4 kcal/g for protein and carbohydrate.
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Q10: Which lipoprotein is considered "good cholesterol"?
A. Chylomicrons
B. VLDL
C. LDL
D. HDL [CORRECT]
Correct Answer: D
Rationale: HDL (High-Density Lipoprotein) transports cholesterol from peripheral tissues to the
liver for excretion, reducing cardiovascular risk. LDL is "bad cholesterol" promoting
atherosclerosis. VLDL transports triglycerides; chylomicrons transport dietary lipids.
Q11: The essential fatty acids that must be obtained from diet are:
A. Omega-3 and omega-6 [CORRECT]
B. Omega-9 and omega-12
C. Saturated and monounsaturated
D. Trans and cis fats
Correct Answer: A
Rationale: Linoleic acid (omega-6) and alpha-linolenic acid (omega-3) are essential because
humans lack desaturase enzymes to synthesize them. Omega-9 can be synthesized. Trans fats are
not essential and should be minimized.
Q12: Which statement about dietary fiber is CORRECT?
A. It provides 4 kcal per gram
B. It is digested in the small intestine
C. It promotes satiety and digestive health [CORRECT]
D. It increases blood cholesterol levels
Correct Answer: C
Rationale: Fiber resists digestion, promotes satiety (soluble fiber forms gels; insoluble adds
bulk), feeds gut microbiota, and improves digestive health. It provides minimal calories (~1.5-
2.5 kcal/g via fermentation), does not raise cholesterol, and passes to the colon.
Q13: A high-quality protein source for vegetarians is:
A. Gelatin
ISSA Nutrition Final Exam 2026/2027 Actual
Exam | 100% Correct Answers with Detailed
Rationales | Pass Guaranteed - A+ Graded
Section 1: Nutrition Foundations and Macronutrients (20 Questions)
Q1: The primary function of carbohydrates in the body is:
A. Building cell membranes
B. Providing energy [CORRECT]
C. Synthesizing hormones
D. Transporting vitamins
Correct Answer: B
Rationale: Carbohydrates provide 4 kcal per gram and serve as the body's preferred energy
source, especially for the brain and high-intensity exercise. Options A and C are functions of
lipids. Option D describes protein and lipid transport functions.
Q2: A client weighs 80 kg and requires 1.6 g of protein per kg body weight daily. What is their
daily protein requirement?
A. 96 grams
B. 112 grams
C. 128 grams [CORRECT]
D. 144 grams
Correct Answer: C
Rationale: Calculation: 80 kg × 1.6 g/kg = 128 grams of protein daily. This falls within the
optimal range for active individuals (1.4-2.0 g/kg) supporting muscle protein synthesis and
recovery.
Q3: Which type of fatty acid contains multiple double bonds in its carbon chain?
A. Saturated fatty acid
B. Monounsaturated fatty acid
C. Polyunsaturated fatty acid [CORRECT]
,2
D. Trans fatty acid
Correct Answer: C
Rationale: Polyunsaturated fatty acids (PUFAs) contain two or more double bonds (e.g., omega-3
and omega-6). Monounsaturated have one double bond; saturated have none. Trans fats are a
specific geometric configuration of unsaturated fats.
Q4: The glycemic index (GI) measures:
A. Total carbohydrate content
B. The rate at which a carbohydrate raises blood glucose [CORRECT]
C. Fiber content
D. Protein quality
Correct Answer: B
Rationale: GI measures how quickly a carbohydrate-containing food raises blood glucose
compared to pure glucose (GI = 100). Lower GI foods (≤55) produce gradual rises; high GI
foods (≥70) cause rapid spikes.
Q5: Which macronutrient has the highest thermic effect of food (TEF)?
A. Carbohydrate
B. Fat
C. Protein [CORRECT]
D. Alcohol
Correct Answer: C
Rationale: Protein has a TEF of 20-30%, meaning 20-30% of its energy is expended during
digestion and metabolism. Carbohydrates: 5-10%. Fat: 0-3%. This makes protein valuable for
metabolic health and weight management.
Q6: A complete protein source contains:
A. All essential amino acids in adequate amounts [CORRECT]
B. Only branched-chain amino acids
C. High levels of collagen
D. Only non-essential amino acids
Correct Answer: A
,3
Rationale: Complete proteins contain all nine essential amino acids (histidine, isoleucine,
leucine, lysine, methionine, phenylalanine, threonine, tryptophan, valine) in sufficient quantities.
Animal sources and soy are complete; most plant proteins require combining.
Q7: The recommended dietary allowance (RDA) for carbohydrates for adults is:
A. 45-65% of total daily calories [CORRECT]
B. 10-35% of total daily calories
C. 20-35% of total daily calories
D. 5-10% of total daily calories
Correct Answer: A
Rationale: The Acceptable Macronutrient Distribution Range (AMDR) for carbohydrates is 45-
65% of total calories. This supports brain function (minimum 130g/day) and physical activity
while allowing dietary flexibility.
Q8: Which carbohydrate is stored in muscle and liver tissue for energy?
A. Glucose
B. Fructose
C. Glycogen [CORRECT]
D. Cellulose
Correct Answer: C
Rationale: Glycogen is the storage form of glucose in animals. The liver stores ~100g for blood
glucose maintenance; muscles store ~400g for local energy. Glucose is the circulating form;
fructose is a monosaccharide; cellulose is indigestible fiber.
Q9: A client consumes 2,500 calories daily with 30% from fat. How many grams of fat do they
consume?
A. 75 grams
B. 83 grams [CORRECT]
C. 92 grams
D. 100 grams
Correct Answer: B
Rationale: Calculation: 2,500 calories × 0.30 = 750 fat calories ÷ 9 cal/g = 83.3 grams. Fat
provides 9 kcal per gram, compared to 4 kcal/g for protein and carbohydrate.
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Q10: Which lipoprotein is considered "good cholesterol"?
A. Chylomicrons
B. VLDL
C. LDL
D. HDL [CORRECT]
Correct Answer: D
Rationale: HDL (High-Density Lipoprotein) transports cholesterol from peripheral tissues to the
liver for excretion, reducing cardiovascular risk. LDL is "bad cholesterol" promoting
atherosclerosis. VLDL transports triglycerides; chylomicrons transport dietary lipids.
Q11: The essential fatty acids that must be obtained from diet are:
A. Omega-3 and omega-6 [CORRECT]
B. Omega-9 and omega-12
C. Saturated and monounsaturated
D. Trans and cis fats
Correct Answer: A
Rationale: Linoleic acid (omega-6) and alpha-linolenic acid (omega-3) are essential because
humans lack desaturase enzymes to synthesize them. Omega-9 can be synthesized. Trans fats are
not essential and should be minimized.
Q12: Which statement about dietary fiber is CORRECT?
A. It provides 4 kcal per gram
B. It is digested in the small intestine
C. It promotes satiety and digestive health [CORRECT]
D. It increases blood cholesterol levels
Correct Answer: C
Rationale: Fiber resists digestion, promotes satiety (soluble fiber forms gels; insoluble adds
bulk), feeds gut microbiota, and improves digestive health. It provides minimal calories (~1.5-
2.5 kcal/g via fermentation), does not raise cholesterol, and passes to the colon.
Q13: A high-quality protein source for vegetarians is:
A. Gelatin
