diffusion
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. (O2) and (CO2)
They respire with the help of a porous cell membrane around them.
CO2 exchanged to blood through capillaries and blood to alveoli
Osmosis is the movement of WATER from an area of high concentration to an area of low concentration through a semi-permeable membrane. So water is exchanged during osmosis.
"diffusion"
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.
osmosis
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.
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. (O2) and (CO2)
Alveoli. this is the right answer
They respire with the help of a porous cell membrane around them.
CO2 exchanged to blood through capillaries and blood to alveoli
Osmosis is the membrane activity that does not require the expenditure of energy by the cell. It does not require any input of energy.