Ijmb Model Questions Vol1 2022 Biology Question 5

Practice essay / theory question 5 from the 2022 Ijmb Model Questions Vol1 Biology examination. This question covers Transport .

Ijmb Model Questions Vol1 2022 Biology Essay / Theory

Topic: Transport

Question 5 IJMB_MODEL_QUESTIONS_VOL1 • 2022 • BIOLOGY • essay

A 25‑year‑old male runner participates in a marathon at sea level. His resting cardiac output is 5 L·min⁻¹, which rises to 20 L·min⁻¹ during intense exercise. His haemoglobin concentration is 15 g·dL⁻¹ and arterial oxygen saturation is 98 %. Assume each gram of haemoglobin can bind 1.34 mL O₂.

Question Parts

( a )

Calculate the maximum amount of oxygen (in mL O₂ per minute) that can be delivered to the tissues at rest and during intense exercise.

( b )

Explain how the structure of capillaries facilitates efficient exchange of nutrients and wastes between blood and tissues.

( c )

Discuss two physiological adjustments that occur in the respiratory system to support increased oxygen delivery during intense exercise.

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About This Question

This is Ijmb Model Questions Vol1 2022 Biology Question 5. It is one of the essay questions from the 2022 Ijmb Model Questions Vol1 Biology examination.

The question covers Transport .

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