A scientist designed an experiment to examine the effects of exercise on respiration. He collected the volume of the gases produced by a group of people as they were running, walking, and at rest for 5 minute time periods. Which question can the scientist answer with his experiment? a Does the amount of oxygen produced during physical activity depend on time? b Does increased activity lead to a higher volume of carbon dioxide produced? c Does decreased activity require a higher amount of oxygen than increased activity? d Does the amount of time spent being active affect the volume of carbon dioxide breathed in?

Answer 1

The most appropriate question the scientist can answer with his experiment is:

b. Does increased activity lead to a higher volume of carbon dioxide produced?

This is because the experiment is designed to collect data specifically on the volume of gases produced during different levels of physical activity (running, walking, and resting). The focus on respiration and gas production (particularly carbon dioxide) directly relates to measuring the effects of increased physical activity. The other options involve comparisons or relationships that go beyond the data being collected.