Two people are measured during the same exercise.
Table
| Person | Heart rate in beats per minute | Stroke volume in cm3\mathrm{cm^3}cm3 per beat |
|---|---|---|
| X | 120 | 100 |
| Y | 150 | 80 |
Use the equation:
cardiac output=stroke volume×heart rate \text{cardiac output}=\text{stroke volume}\times\text{heart rate} cardiac output=stroke volume×heart rateWhich conclusion is supported by these data?
Y has greater cardiac output because its heart rate is higher.
Both have equal cardiac output despite their different heart rates.
X has greater cardiac output because its stroke volume is higher.
Both have equal stroke volume despite their different heart rates.
42 exam-style questions on Edexcel GCSE Biology 8.2 Blood and circulation, covering 8.2.1 Structure and function of the blood, 8.2.2 Structure of blood vessels, 8.2.3 Structure of the heart and circulatory system, and 8.2.4 Cardiac output. Each one has a worked solution and a mark scheme showing where the marks go.