BI-1171
The heart
Biology · Secondary 3 · Medium · The heart
In one cardiac cycle, the ventricles of a student’s heart are in systole for 0.3 s and in diastole for 0.5 s. What is the student’s heart rate in beats per minute?
- 60 beats per minute
- 75 beats per minute
- 90 beats per minute
- 120 beats per minute
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