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7. (a) (i) Name one muscle involved in breathing - Leaving Cert Biology - Question 7 - 2018
Question 7
7. (a) (i) Name one muscle involved in breathing. _____________________________ (ii) In which structures does gas exchange occur in the lungs? ______________________... show full transcript
Worked Solution & Example Answer:7. (a) (i) Name one muscle involved in breathing - Leaving Cert Biology - Question 7 - 2018
Step 1
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Step 3
How did you measure the resting rate?
Answer
To measure the resting rate, the first step is to count the number of breaths taken in one minute. This can be done by observing the rise and fall of the chest or by counting breaths through a stopwatch. It is crucial to ensure the participant is at rest, ideally sitting quietly before taking the measurement to ensure accuracy.
Step 4
After measuring the resting rate, what other steps did you carry out to complete the investigation?
Answer
After measuring the resting rate, the next step is to have the participant perform a specific set of exercises for a predetermined amount of time. Following the exercise, the breathing rate should be recorded immediately after to compare it with the resting rate measured earlier. It is essential to repeat this process to ensure consistent results and possibly average the rates for accuracy.
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Step 6
Give a reason for your choice.
Answer
The reason for this choice is that the unfit student (B) has a significantly higher increase in breathing rate after exercise (from 15 to 35 breaths per minute), indicating a lower level of fitness, while the fit student (A) only increased from 14 to 17 breaths per minute.