Neco 2019 Biology Question 37

Practice objective / multiple choice question 37 from the 2019 Neco Biology examination.

Neco 2019 Biology Objective / Multiple Choice Medium Difficulty
Question 37 NECO • 2019 • BIOLOGY • objective

A resting adult is measured for respiratory gases over a 10‑minute period. Oxygen consumption is 250 mL and carbon dioxide production is 210 mL. (a) Calculate the respiratory quotient (RQ). (b) Based on the RQ, identify the predominant metabolic substrate being oxidised. (c) During moderate exercise the same person consumes 500 mL O₂ and produces 460 mL CO₂ in 10 minutes. Calculate the new RQ and state what this indicates about the shift in substrate utilisation.

Answer Options

A. Resting RQ = 0.80 (predominantly carbohydrate); Exercise RQ = 0.88 (mixed substrate, predominately fat)
B. Resting RQ = 0.90 (predominantly carbohydrate); Exercise RQ = 1.00 (indicates exclusive carbohydrate oxidation)
C. Resting RQ = 0.86 (mixed substrate, predominately protein); Exercise RQ = 0.95 (predominantly carbohydrate)
Correct Answer D. Resting RQ = 0.84 (mixed substrate, predominately fat); Exercise RQ = 0.92 (predominantly carbohydrate)
Correct Answer
D
Correct Option:
Resting RQ = 0.84 (mixed substrate, predominately fat); Exercise RQ = 0.92 (predominantly carbohydrate)

About This Question

This is Neco 2019 Biology Question 37. It is one of the objective questions from the 2019 Neco Biology examination.

Difficulty level: Medium .

View More Neco 2019 Biology Questions More Neco 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