Question

A biology student wanted to see if runners from the track team would have a lower respiratory rate than non-runners during exercise. She determined each student's resting respiratory rate. Each student performed the same exercise for a total of 3 minutes, measuring their respiratory rate at the end of each minute. They continued to measure their respiratory rates for 3 more minutes after the exercising had stopped.The table below shows the average respiratory rate of these students over time. Time Runners Non-runners (minutes) (breaths/min) (breaths/min)Resting respiratory rate 0 14 18Exercise phase 1 18 30 2 20 34 3 24 40Post-exercise phase 4 22 39 5 17 36 6 14 32Which of the following is best supported by the data in the table?A) The non-runners returned to resting respiratory rate faster than the runners.B) The respiratory rates of both groups increased by the same amount during exercise.C) The non-runners had a lower respiratory rate than the runners during exercise.D) The respiratory rates of the runners returned to the resting rate 3 minutes post-exercise.

Answer 1

The respiratory rates of the runners returned to the resting rate 3 minutes post-exercise.

Step-by-step explanation:

1.) The runners had an overall lower resting respiratory rate than the non-runners.

2.) Although both experienced an elevation in respiratory rate during exercise, the non-runners' respiratory rates had a larger increase.

3.) In the 3 minutes post-exercise, the runners were able to return to resting respiratory rate, while the non-runners were not.

4.) The correct answer is: The respiratory rates of the runners returned to the resting rate 3 minutes post-exercise.

Answer 2

The respiratory rates of the runners returned to the resting rate 3 minutes post-exercise.

Step-by-step explanation:

In the table we can see how the resting respiratory rate of runners is 14. In the post exercise part their respiratory rate is 22. After 3 boxes the number becomes 14 again. Each of the boxes is 1 minute. Then after 3 minutes, their respiratory rate becomes the same as their resting respiratory rate.