This biology question covers important biological concepts and processes. The step-by-step explanation below helps you understand the underlying mechanisms and reasoning.
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This document outlines a Grade 10 practical activity on human transport systems, focusing on the influence of exercise duration on pulse rate. Aim: To investigate how the duration of exercise affects a person's pulse rate. Apparatus: A stopwatch (a cell phone can be used), pen, and paper. Method: Step 1: Identify a partner to work with for the activity. Step 2: Measure the pulse rates of both partners (Person A and Person B) while they are at rest. Record these measurements in a table. To measure pulse rate:* Place your index and middle finger on the inside of the wrist. Count the number of beats felt for one minute. This count is the pulse rate, measured in beats per minute. Step 3: (Partially visible) Person A will perform a running exercise. Step 4: (Partially visible) Repeat Stage 3, likely involving further exercise or measurement. Step 5: (Partially visible) Person A performs another running activity, likely for a different duration or intensity.