Exercise 1: Apply the Scientific Method (Human Biology) C 15 minutes) Previous r
ID: 194290 • Letter: E
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Exercise 1: Apply the Scientific Method (Human Biology) C 15 minutes) Previous research shows that some human populations living at extremely high altitudes have larger lungs. Research has also shown that at high elevations the oxygern ower, and people in these areas are at risk of not getting enough oxygen. 1. Generate a hypothesis about why people in high altitudes have larger lungs 2. Descri be the type or types of data you would ideally collect to test this hypothesis. 3. Describe what hypothetical data might support the hypothesis. For example, the hypothesis would be supported if we found data that indicated 4. Describe what hypothetical data might reject the hypothesis. For example, the hypothesis would be rejected if we found data that indicated 5. If you found data that rejected the hypothesis, how would you rewrite your hypothesis to account for your findings and begin again?Explanation / Answer
Exercise 1.
1. As the concentration of oxygen is lower at high altitude, a person has to breathe more air (note : air is not 100% oxygen) to meet the oxygen need of the body. Hence the lungs of people living at high altitude are larger so that the rate of inhalation of air is more.
2. The data about volume of air inhaled by people who live at high altitude and people who live at normal sea level will help to prove our point that at high altitude one inhales more air. Data about sizes of lungs will also support our hypothesis. As size of lung is directly related to volume of air inhaled according to our hypothesis.
3. A data that indicate the volume of air inhaled by people at high altitude is more than people who live at normal sea level will prove our hypothesis.
4. The hypothesis will be rejected if the data indicates that volume of air inhaled by people who live at high altitude is less or equal to the volume of air inhaled by people who live at normal sea level.
5. If the data indicates that my hypothesis is wrong I will find the loop holes in my hypothesis. In this case, the reasons can be incorrect data. In that case I will collect data in more precise why complemented with chest X-ray to find the size of lungs. I will also increase the sample set (number of people who participated in the research). If the new data indicates similar results as before, I will research whether low concentration of oxygen causes a defect in size of lungs (inflammation) but has nothing to do with volume of air inhaled.
Note : It is important to understand that air is not 100 % oxygen. When we say more air is inhaled for more oxygen we mean that as volume of air increase volume of oxygen also increases.
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