When you take a deep breath in and then exhale, the CO 2 that is released came froma. Your bloodb. Your lungsc. Your foodd. All the abovee. None of the above
Question
When you take a deep breath in and then exhale, the CO<sub>2</sub> that is released came from
a. Your blood
b. Your lungs
c. Your food
d. All the above
e. None of the above
Solution
The CO2 that is released when you exhale comes from:
a. Your blood: This is true. The cells in your body produce carbon dioxide as a byproduct of cellular respiration. This carbon dioxide is transported to your lungs via your bloodstream.
b. Your lungs: This is also true. The lungs are the organs responsible for gas exchange. They take in oxygen and expel carbon dioxide.
c. Your food: This is true as well. The food you eat is broken down by your body in a process called metabolism. One of the byproducts of metabolism is carbon dioxide, which is then expelled from your body when you exhale.
So, the correct answer is d. All of the above.
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