Why is oxygen important to blood and to the cells?

Oxygen helps the blood to clot.

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Oxygen brings food to the cells.

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Oxygen is necessary for cell growth and energy.

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Oxygen is not important -- carbon dioxide is the most important substance to the body.

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Solution

The correct option is C Oxygen is necessary for cell growth and energy.
The blood carries oxygen to the cells of the body. In the cells, oxygen combines with chemicals obtained from food to produce the energy needed for each cell to perform its function in the body. Therefore, oxygen is needed by the cells because it will promote cell growth and regeneration.
So, the correct option is 'Oxygen is necessary for cell growth and energy.'

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Similar questions

Haemoglobin helps oxygen to reach each cells of the body. So if a person has more haemoglobin, is it necessary that he would breathe in more oxygen? Will it affect the rate of oxygen in oxygenated blood ?

Why carbon dioxide is transported in the dissolved form in our blood as compared to oxygen?

Q. In the presence of oxygen, cells breakdown _____ from the food to produce water, carbon dioxide, and energy.

Q. White blood cells help in carrying oxygen to all organs of the body.

Q. Blood is not responsible for transport of oxygen and nutrients to all the cells.

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