Neco 2021 Biology Question 3

Practice essay / theory question 3 from the 2021 Neco Biology examination. This question covers nutrition, balanced diet, energy requirements .

Neco 2021 Biology Essay / Theory

Topics: nutrition balanced diet energy requirements

Question 3 NECO • 2021 • BIOLOGY • essay

The diagram below illustrates the recommended proportion of food groups in a balanced daily diet for an adult.

Question Parts

( a )

A 2500 kcal diet is recommended for the adult. Using the caloric values per gram (carbohydrate = 4 kcal/g, protein = 4 kcal/g, fat = 9 kcal/g, vegetables and fruits = 0.8 kcal/g), calculate the approximate gram amount required from each food group shown in the diagram.

( b )

The individual actually consumes the following amounts in a day: 300 g carbohydrates, 80 g protein, 70 g fats, and a combined 250 g of vegetables and fruits. Determine whether each food‑group intake meets, exceeds, or falls short of the recommended percentage. Show all calculations and state the percentage deviation for each group.

( c )

Discuss two possible health consequences of a chronic deficiency in the vegetable group and two consequences of chronic excess fat intake. Relate each consequence to the underlying physiological mechanism.

( d )

Suggest a concise one‑week meal plan (one meal per day is sufficient) that would enable the individual in part (b) to achieve the recommended proportions calculated in part (a). Briefly justify how each suggested meal contributes to correcting the identified imbalances.

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About This Question

This is Neco 2021 Biology Question 3. It is one of the essay questions from the 2021 Neco Biology examination.

The question covers nutrition, balanced diet, energy requirements .

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