Igcse Model Questions Vol1 2020 Biology Question 4

Practice objective / multiple choice question 4 from the 2020 Igcse Model Questions Vol1 Biology examination.

Igcse Model Questions Vol1 2020 Biology Objective / Multiple Choice Medium Difficulty
Question 4 IGCSE_MODEL_QUESTIONS_VOL1 • 2020 • BIOLOGY • objective

A student's lunch consists of the following foods: - 150 g of white rice (80 % carbohydrate by weight, 4 kcal g\(^{-1}\) for carbohydrate) - 100 g of chicken breast (30 % protein by weight, 4 kcal g\(^{-1}\) for protein) - 30 g of butter (100 % fat, 9 kcal g\(^{-1}\) for fat) (a) Calculate the total caloric intake from the meal. (b) Determine the percentage of the total calories that comes from carbohydrate, protein and fat respectively. (c) Compare these percentages with the recommended dietary distribution of 55 % carbohydrate, 15 % protein and 30 % fat, and comment on whether the meal meets the recommendations.

Answer Options

A. Total energy = 840 kcal; 54.0 % from carbohydrate, 14.5 % from protein, 31.5 % from fat. The meal meets the carbohydrate recommendation, meets protein recommendation, and slightly exceeds the fat recommendation.
B. Total energy = 870 kcal; 50.0 % from carbohydrate, 20.0 % from protein, 30.0 % from fat. The meal is low in carbohydrate, meets protein recommendation, and meets fat recommendation.
Correct Answer C. Total energy = 870 kcal; 55.2 % from carbohydrate, 13.8 % from protein, 31.0 % from fat. The meal meets the carbohydrate recommendation, is slightly low in protein and slightly high in fat.
D. Total energy = 900 kcal; 56.0 % from carbohydrate, 12.0 % from protein, 32.0 % from fat. The meal exceeds the carbohydrate recommendation, is low in protein, and high in fat.
Correct Answer
C
Correct Option:
Total energy = 870 kcal; 55.2 % from carbohydrate, 13.8 % from protein, 31.0 % from fat. The meal meets the carbohydrate recommendation, is slightly low in protein and slightly high in fat.

About This Question

This is Igcse Model Questions Vol1 2020 Biology Question 4. It is one of the objective questions from the 2020 Igcse Model Questions Vol1 Biology examination.

Difficulty level: Medium .

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