Gce Model Questions Vol1 2025 Biology Question 33
Practice objective / multiple choice question 33 from the 2025 Gce Model Questions Vol1 Biology examination.
The cardiac output (CO) is given by \(CO = SV \times HR\), where stroke volume \(SV\) is the volume of blood pumped per beat and heart rate \(HR\) is beats per minute. Arterial oxygen content is \(0.20\ \text{ml\,O}_{2}\) per ml blood and venous content is \(0.15\ \text{ml\,O}_{2}\) per ml blood. (a) With a resting \(SV = 70\ \text{ml}\) and \(HR = 70\ \text{bpm}\), calculate the resting oxygen delivery (in ml O\(_2\) min\(^{-1}\)). (b) During moderate exercise, \(HR\) rises by 20 % and \(SV\) by 10 %. By what percentage does oxygen delivery increase?
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This is Gce Model Questions Vol1 2025 Biology Question 33. It is one of the objective questions from the 2025 Gce Model Questions Vol1 Biology examination.
Difficulty level: Medium .
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