Where does the carbon come from in the CO2 we exhale?

The carbon we breathe out as carbon dioxide comes from the carbon in the food we eat. The carbohydrates, fat and proteins we consume and digest are eventually converted by a number of different biochemical pathways in the body to glucose (C6H12O6).

Where did the carbon and the oxygen come from that made up the CO2?

Atmospheric carbon dioxide derives from multiple natural sources including volcanic outgassing, the combustion of organic matter, and the respiration processes of living aerobic organisms; man-made sources of carbon dioxide come mainly from the burning of various fossil fuels for power generation and transport use.

Where do atoms come from that make carbon dioxide?

Carbon dioxide: Carbon dioxide is a molecule composed of one carbon atom bonded to two oxygen atoms via two double bonds. Carbon dioxide is a byproduct of exhaling and from the burning of fossil fuels.

Where are the O2 and CO2 used produced when we breathe them in out?

Gas exchange takes place in the millions of alveoli in the lungs and the capillaries that envelop them. As shown below, inhaled oxygen moves from the alveoli to the blood in the capillaries, and carbon dioxide moves from the blood in the capillaries to the air in the alveoli.

Where does the carbon dioxide we exhale go?

Just like oxygen, carbon dioxide is transferred to blood to be carried to the lungs, where it is removed and we breathe it out.

Where do we find carbon dioxide?

Because carbon dioxide is soluble in water, it occurs naturally in groundwater, rivers and lakes, ice caps, glaciers and seawater. It is present in deposits of petroleum and natural gas. Carbon dioxide has a sharp and acidic odor and generates the taste of soda water in the mouth.

Where is CO2 found?

Where does oxygen in the air come from?

All of earth’s oxygen does not come from trees. Rather, the atmospheric oxygen that we depend on as humans comes predominantly from the ocean. According to National Geographic, about 70\% of the oxygen in the atmosphere comes from marine plants and plant-like organisms.

Where does the o2 that you breathe in specifically go to during metabolism?

The oxygen in inhaled air passes across the thin lining of the air sacs and into the blood vessels. This is known as diffusion. The oxygen in the blood is then carried around the body in the bloodstream, reaching every cell. When oxygen passes into the bloodstream, carbon dioxide leaves it.