Kristen is running a half marathon. By her tenth minute of running, her breathing rate has increased from her resting rate. Which statement best describes how her tissues are responding to her running?
They need more oxygen to function, so gas exchange needs to decrease.
They need more oxygen to function, so gas exchange needs to increase.
They need more carbon dioxide to function, so gas exchange needs to increase. They need more carbon dioxide to function, so gas exchange needs to decrease.

Question

24-01-2017
Biology

contestada

Kristen is running a half marathon. By her tenth minute of running, her breathing rate has increased from her resting rate. Which statement best describes how her tissues are responding to her running?
They need more oxygen to function, so gas exchange needs to decrease.
They need more oxygen to function, so gas exchange needs to increase.
They need more carbon dioxide to function, so gas exchange needs to increase. They need more carbon dioxide to function, so gas exchange needs to decrease.

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vilnius vilnius · Answer 1 · 2018-12-27T17:28:40+01:00

The correct answer is option They need more oxygen to function, so gas exchange needs to increase.

As the person starts a physical exercise, the workload of the muscles increase, which produces a higher demand of ATP. In order to produce ATP, the mitochondria require more oxygen and glucose to generate the ATP molecules, as a result, the demand for the oxygen is increased. Due to increase in oxygen demand, the lungs do more gaseous exchange, so that the demand of the oxygen can be fulfilled.

mahima6824soni mahima6824soni · Answer 2 · 2022-02-01T05:30:27+01:00

The statement best describe Kristen tissue responding to her running is they need more oxygen to function, so gas exchange needs to increase.

The correct option is (B).

What affects your heart rate while you are running?

When a person runs or exercise or do any physical thing, the cell requires more oxygen to carry out the process faster than the normal rate.

The heart starts to beat at a faster rate to provide more oxygen to the cells. That's why the breathing rate increase to get in more air.

Thus, the correct option is (B) They require more oxygen to function, so gas exchange needs to increase.

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