Oxygen diffuses into cells. Carbon dioxide diffuses out.
carbon dioxide.
Oxygen is the gas that usually passes into cells. It moves by diffusion from the bloodstream.
The ladybug has spiracles (holes in their body) on their sides and the thorax (body section which wings and legs are attached to) through which the air enters. The oxygen then moves through the tubules in the ladybug's body along the concentration gradient to the respiring cells, and the carbon dioxide which is produced by the cells moves along the concentration gradient to the spiracles and leaves the insect.
The blood carries oxygen to all the cells of the body.
The capillaries are responsible for gas and nutrient exchange with each of the body's cells.
Oxygen! Remember it isn't the only gas. CO2 is also removed from cells in the body.
In gas cans.
Blood moves Carbon Dioxide, or CO2, away from body cells through the Circulatory system. It is taken to the lungs, diffused into alveoli, and then is exhaled. CO2 is the waste product of cellular respiration, which is the process that mitochondria use to create usable cellular energy.
Oxygen (O2)
carbon dioxide
carbon dioxide
Oxygen