A Level Biology Practice Exam

Question: 1 / 715

What heart condition is characterized by a resting heart rate over 100 beats per minute?

Bradycardia

Tachycardia

The condition characterized by a resting heart rate exceeding 100 beats per minute is known as tachycardia. This elevated heart rate can occur in various situations, such as during exercise, stress, or due to underlying medical conditions like fever or hyperthyroidism. In a healthy individual, tachycardia can be a normal response to increased physical demands, but persistent tachycardia may require further evaluation to determine the underlying cause. This condition contrasts with bradycardia, where the heart rate is abnormally low, and arrhythmia, which involves irregular heartbeats. Atrial flutter is a specific type of arrhythmia, not primarily defined by the resting heart rate alone.

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Arrhythmia

Atrial flutter

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