Nutrition Practice Questions
NECO (Nigeria) · NECO Biology · 146 free MCQs with instant results and detailed explanations.
146
Total
41
Easy
75
Medium
30
Hard
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Sample Questions from Nutrition
Here are 10 sample questions. Start a quiz to get randomized questions with scoring.
Q1
Easy
What is the primary function of dietary fiber in human nutrition?
A.
To provide energy
B.
To aid digestion
C.
To build muscle
D.
To transport oxygen
Show Answer & Explanation
Correct Answer: B
Dietary fiber primarily aids digestion by facilitating the movement of food through the digestive tract and preventing constipation.
Q2
Easy
Which vitamin is essential for maintaining healthy vision and is found in carrots?
A.
Vitamin A
B.
Vitamin C
C.
Vitamin D
D.
Vitamin E
Show Answer & Explanation
Correct Answer: A
Vitamin A is crucial for maintaining good vision, particularly in low-light conditions, and is abundantly found in carrots.
Q3
Easy
Which of the following is NOT a macronutrient essential for human nutrition?
A.
Proteins
B.
Fats
C.
Vitamins
D.
Carbohydrates
Show Answer & Explanation
Correct Answer: C
Vitamins are micronutrients, not macronutrients. Macronutrients include proteins, fats, and carbohydrates, which are needed in larger amounts for energy and body functions.
Q4
Medium
Which of the following nutrients is primarily responsible for providing energy to living organisms?
A.
Proteins
B.
Carbohydrates
C.
Fats
D.
Vitamins
Show Answer & Explanation
Correct Answer: B
Carbohydrates are the main source of energy for the body, being broken down into glucose, which fuels cellular activities.
Q5
Medium
In the context of nutrition, what is the main function of dietary fiber?
A.
To provide energy
B.
To aid digestion
C.
To build muscle tissue
D.
To absorb vitamins
Show Answer & Explanation
Correct Answer: B
Dietary fiber aids digestion by adding bulk to the diet, which helps in maintaining bowel health and preventing constipation.
Q6
Medium
Which vitamin is most closely associated with the absorption of calcium in the body?
A.
Vitamin A
B.
Vitamin C
C.
Vitamin D
D.
Vitamin E
Show Answer & Explanation
Correct Answer: C
Vitamin D enhances the intestinal absorption of calcium, critical for maintaining bone health and metabolism.
Q7
Medium
Which of the following is a characteristic of a balanced diet?
A.
High in carbohydrates only
B.
Includes all essential nutrients
C.
Low in proteins and fats
D.
Rich in sugars and salts only
Show Answer & Explanation
Correct Answer: B
A balanced diet includes all essential nutrients in appropriate proportions to support overall health and well-being.
Q8
Hard
Which of the following statements best describes the role of enzymes in the digestion of carbohydrates?
A.
Enzymes increase the temperature of the digestive tract to enhance carbohydrate breakdown.
B.
Enzymes catalyze the hydrolysis of carbohydrates into simpler sugars.
C.
Enzymes convert carbohydrates directly into proteins during digestion.
D.
Enzymes are not involved in carbohydrate digestion.
Show Answer & Explanation
Correct Answer: B
Enzymes specifically break down carbohydrates through hydrolysis, converting them into simpler sugars, which is crucial for nutrient absorption.
Q9
Hard
A person consumes a diet high in carbohydrates but low in proteins. What is the most likely consequence of this nutritional imbalance?
A.
Increased muscle mass due to excess carbohydrates.
B.
Inadequate production of enzymes and hormones that require amino acids.
C.
Enhanced energy levels due to abundant carbohydrate intake.
D.
Development of scurvy due to lack of carbohydrates.
Show Answer & Explanation
Correct Answer: B
A diet low in proteins leads to insufficient amino acids required for the synthesis of enzymes and hormones, which are crucial for various bodily functions.
Q10
Hard
Which component of a plant cell is primarily responsible for the synthesis of carbohydrates during photosynthesis?
A.
Chloroplast
B.
Mitochondria
C.
Ribosome
D.
Endoplasmic Reticulum
Show Answer & Explanation
Correct Answer: A
Chloroplasts are the organelles responsible for photosynthesis in plant cells, converting light energy into chemical energy in the form of glucose, thus synthesizing carbohydrates.
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Nutrition — NECO (Nigeria) NECO Biology Practice Questions Online
This page contains 146 practice MCQs for the chapter Nutrition in NECO (Nigeria) NECO Biology. The questions are organized by difficulty — 41 easy, 75 medium, 30 hard — so you can choose the right level for your preparation.
Every question includes a detailed explanation to help you understand the concept, not just memorize answers. Take a timed quiz to simulate exam conditions, or practice at your own pace with no time limit.