diffusion
An amoeba lives in an aqueous environment; some oxygen from the air will normally dissolve into the water (or, oxygen is released by plants living in the water) and oxygen will enter the amoeba by the process of diffusion.
Oxygen and carbon dioxide. (O2) and (CO2)
CO2 exchanged to blood through capillaries and blood to alveoli
Through the cell membrane.
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.
Oxygen and carbon dioxide are exchanged in the lungs through diffusion. Oxygen moves from the alveoli into the blood, while carbon dioxide moves from the blood into the alveoli, driven by differences in their concentration gradients. This process does not involve active transport, filtration, or osmosis.
"diffusion"
Yes, oxygen and carbon dioxide are exchanged in the human body through the process of respiration. When we inhale, we take in oxygen from the air which is used by our cells for energy production. Carbon dioxide, a waste product of this process, is then expelled from the body when we exhale.
diffiusion
diffusion
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.
Oxygen and carbon dioxide are exchanged in body tissues through the process of diffusion. Oxygen in the blood enters the tissue cells, where it is used for cellular respiration. Carbon dioxide, a byproduct of this process, moves from the cells into the blood to be transported back to the lungs for exhalation.
The respiratory system takes in oxygen through the lungs and eliminates carbon dioxide through exhalation. Oxygen is exchanged with carbon dioxide in the alveoli of the lungs during the process of respiration.
The tiny air sacs in the lungs where oxygen and carbon dioxide are exchanged are called alveoli. They are surrounded by blood vessels through which gas exchange takes place during the process of respiration.
An amoeba lives in an aqueous environment; some oxygen from the air will normally dissolve into the water (or, oxygen is released by plants living in the water) and oxygen will enter the amoeba by the process of diffusion.
The respiratory system removes carbon dioxide from the blood and brings oxygen into the blood. This process occurs through the lungs, where oxygen from the air is exchanged for carbon dioxide in the blood.
The ameba gets rid of carbon dioxide and excess water by the process of exocytosis. This is the process by which gases and other wastes leave the cell through the cell membrane.