Igcse Model Questions Vol1 2019 Biology Question 30

Practice objective / multiple choice question 30 from the 2019 Igcse Model Questions Vol1 Biology examination.

Igcse Model Questions Vol1 2019 Biology Objective / Multiple Choice Medium Difficulty
Question 30 IGCSE_MODEL_QUESTIONS_VOL1 • 2019 • BIOLOGY • objective

At rest a person consumes \(250\) ml of \(\mathrm{O_2}\) per minute. The respiratory quotient (RQ) is \(0.8\). (i) Calculate the volume of \(\mathrm{CO_2}\) produced per minute. (ii) Assuming that the oxidation of one litre of \(\mathrm{O_2}\) releases \(5\) kcal of energy, determine the energy released per minute and per hour.

Answer Options

A. CO₂ produced: 312.5 ml/min; energy released: 1.25 kcal per minute (75 kcal per hour)
B. CO₂ produced: 200 ml/min; energy released: 2.5 kcal per minute (150 kcal per hour)
Correct Answer C. CO₂ produced: 200 ml/min; energy released: 1.25 kcal per minute (75 kcal per hour)
D. CO₂ produced: 200 ml/min; energy released: 1.0 kcal per minute (60 kcal per hour)
Correct Answer
C
Correct Option:
CO₂ produced: 200 ml/min; energy released: 1.25 kcal per minute (75 kcal per hour)

About This Question

This is Igcse Model Questions Vol1 2019 Biology Question 30. It is one of the objective questions from the 2019 Igcse Model Questions Vol1 Biology examination.

Difficulty level: Medium .

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