Igcse Model Questions Vol1 2021 Biology Question 17

Practice objective / multiple choice question 17 from the 2021 Igcse Model Questions Vol1 Biology examination.

Igcse Model Questions Vol1 2021 Biology Objective / Multiple Choice Medium Difficulty
Question 17 IGCSE_MODEL_QUESTIONS_VOL1 • 2021 • BIOLOGY • objective
Igcse Model Questions Vol1 2021 Biology Question 17 diagram

A labelled plate diagram shows three food groups with the following amounts: Carbohydrates \(150\) g, Proteins \(60\) g, and Fats \(30\) g. Using energy values of \(4\) kcal g\(^{-1}\) for carbohydrates and proteins and \(9\) kcal g\(^{-1}\) for fats, (a) calculate the total energy supplied by the plate, (b) the percentage of total energy contributed by each macronutrient, and (c) identify which macronutrient exceeds the recommended maximum of \(30\%\) of total energy.

Answer Options

Correct Answer A. Total energy = 1110 kcal; Carbohydrates ≈ 54 %, Proteins ≈ 22 %, Fats ≈ 24 %; Carbohydrates exceed the 30 % limit.
B. Total energy = 1080 kcal; Carbohydrates ≈ 55 %, Proteins ≈ 20 %, Fats ≈ 25 %; Proteins exceed the 30 % limit.
C. Total energy = 1200 kcal; Carbohydrates ≈ 50 %, Proteins ≈ 25 %, Fats ≈ 25 %; No macronutrient exceeds the 30 % limit.
D. Total energy = 1110 kcal; Carbohydrates ≈ 45 %, Proteins ≈ 30 %, Fats ≈ 25 %; Proteins exceed the 30 % limit.
Correct Answer
A
Correct Option:
Total energy = 1110 kcal; Carbohydrates ≈ 54 %, Proteins ≈ 22 %, Fats ≈ 24 %; Carbohydrates exceed the 30 % limit.

About This Question

This is Igcse Model Questions Vol1 2021 Biology Question 17. It is one of the objective questions from the 2021 Igcse Model Questions Vol1 Biology examination.

Difficulty level: Medium .

View More Igcse Model Questions Vol1 2021 Biology Questions More Igcse Model Questions Vol1 Practice Questions Back to Questions

Master the Exam!

You've seen a preview, but there are thousands more questions plus AI tutor to break down complex solutions.

Unlock Full Access Available for Android & Windows
Chat with Support