why is oxygen important to humans?

Answer 1

Oxygen is important in cellular respiration. No oxygen -> cells don't make energy -> cells die -> end of that particular human.

Answer 2

Although it will not burn alone, oxygen supports combustion; in fact, without oxygen there can be no fire. Oxygen, therefore, is not only necessary for the burning of combustible materials, but it is absolutely essential to support the process of "vital combustion" which maintains human life. Although a person can live for weeks without food or for days without water, he or she dies in minutes if deprived of oxygen.
The human body is essentially a converter which consumes fuel and produces heat and energy. It is like a furnace which utilizes the oxygen in air to burn coal, producing heat and power. The human body must have oxygen to convert fuel (the carbohydrates, fats, and proteins in our diet) into heat, energy, and life. The conversion of body fuels into life is similar to the process of combustion; fuel and oxygen are consumed, while heat and energy are generated. This process is known as "metabolism".

Answer 3

Because living is important to humans.

Answer 4

Our body needs O2, because our physiology needs oxygen for metabolism to produce energy (where O2 will react with carbohydrate). O2 is carried in our blood to bind with haemoglobin and gas exchange also occur in our lung aveoli to clear CO2 toxic that are produced from the metabolism out of our body. We need energy to live that's why we need O2.

Answer 5

Oxygen is required for muscles and organs to function. One of the main reasons being that Oxygen is used to burn kalories. For example, when you are doing exersize, your body burns carbohydrates because they don't need as much oxygen to be turned into energy, because the oxygen is going to your muscles. When you arenr moving much, eg watching tv, then your body burns fat because fat requires alot of oxygen to be turned into energy. But dont just lounge around to lose fat. YOu need to exersize so you burn all the carbohydrates first, then your body burns the fat :).

Hope that explains it.

Answer 6

we need it to live
what can be more important

Answer 7

it's a large part of the biochemical processes that take place in our bodies that keep us alive

Answer 8

WE need to breathe!! or respirate...
without O2...we cannot breathe or respirate. Hence, we will die...