Gas exchanges occur by simple diffusion through the respiratory membrane -- oxygen passing from the alveolar air into the capillary blood and carbon dioxide leaving the blood to enter the gas-filled aveoli.
Exchange of both oxygen and carbon dioxide through the respiratory membrane occurs by cellular respiration and by photosynthesis. This can vary depending on the cell.
diffusion.
osmosis, methinks.
Diffusion!
diffusion
oxygen and carbon-dioxide
diffusion
Oxygen and carbon dioxide. (O2) and (CO2)
Alveolus
lipids.
During photosynthesis, carbon dioxide and oxygen are exchanged. The plant uses the carbon dioxide for the photosynthesis and expels oxygen.
oxygen and carbon-dioxide
The gases that are exchanged are oxygen and carbon dioxide.
diffusion
Oxygen and carbon dioxide. (O2) and (CO2)
Alveoli. this is the right answer
oxygen and carbon dioxide are exchanged in alveoli (singular alveolus).
When we breathe in our lungs fill with oxygen rich air. Membranes in the lungs exchange the oxygen from the air with carbon dioxide in the blood. Then we breathe out the spent air to inhale fresh. The blood, now replenished with oxygen, is pumped by the heart through the arteries to all cells in the body where the oxygen is exchanged with the cells for carbon dioxide and returned through the veins to the lungs.
The gases that are exchanged are oxygen and carbon dioxide.
oxygen and carbon dioxide
Oxygen and carbon dioxide in the alceoliCO2 and O2
They enter/exit through a passive transport process called diffusion. It is caused by a concentration gradient within the two things being exchanged. The molecules diffuse across the membrane from the high concentration to the lower concentration side.