Neco Model Questions Vol1 2019 Biology Question 3

Practice essay / theory question 3 from the 2019 Neco Model Questions Vol1 Biology examination. This question covers Nutrition, Macronutrients, Micronutrients, Dietary calculations .

Neco Model Questions Vol1 2019 Biology Essay / Theory
Topics: Nutrition Macronutrients Micronutrients Dietary calculations
Question 3 NECO_MODEL_QUESTIONS_VOL1 • 2019 • BIOLOGY • essay
Neco Model Questions Vol1 2019 Biology Question 3 diagram

The diagram shows a labelled plate model illustrating the major food groups and their recommended proportion in a balanced diet for an adult.

Question Parts

( a )
Identify the three macronutrients shown in the diagram and state the primary physiological function of each.
( b )
Using the percentages shown in the plate (Carbohydrates 55 %, Proteins 20 %, Fats 25 %), compare them with the recommended caloric distribution for an adult (Carbohydrates 55 %, Proteins 15 %, Fats 30 %). Discuss any discrepancy and its possible nutritional implication.
( c )
A patient requires a total energy intake of 2 500 kcal per day. Based on the plate proportions (55 % carbs, 20 % proteins, 25 % fats), calculate the approximate gram amount of each macronutrient the patient should consume. (Use 4 kcal g⁻¹ for carbohydrates and proteins, 9 kcal g⁻¹ for fats.)
( d )
One of the micronutrients highlighted in the diagram is iron. Explain how a deficiency of iron can affect the body’s oxygen‑transport system.

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About This Question

This is Neco Model Questions Vol1 2019 Biology Question 3. It is one of the essay questions from the 2019 Neco Model Questions Vol1 Biology examination.

The question covers Nutrition, Macronutrients, Micronutrients, Dietary calculations .

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