How do substances like co2 and water move in and out of the cell discuss

If I spray a little perfume over here, before long... I can smell it over here. That's because of a process called diffusion. Diffusion refers to the overall movement of particles from areas of high concentration to areas of low concentration. In living things, diffusion allows substances to move in and out of cells. It's how red blood cells distribute oxygen through the body. When empty blood cells enter the lungs, which have an extremely high concentration of oxygen, the molecules pass into the blood cells, filling them up. Now with a high concentration of oxygen, the blood cells flow through parts of the body with a low concentration of oxygen and it diffuses out from the blood cells into those parts. Cells in those parts of the body constantly use oxygen, so it never builds up and always flows in the same direction. The blood cells continue on and empty their oxygen before returning to the lungs for another top up. Now I'm going to diffuse this perfume out a window. Diffusion is the overall movement of any substance from an area of higher concentration to an area of lower concentration. This can be within a cell or between them. Diffusion only happens in liquids and gases because their particles move randomly from place to place. It is an important process for living things; it is how substances move in and out of cells. It happens naturally and so does not require energy. The particles collide with each other or with their container. This makes them change direction. ...

Carbon dioxide (CO₂) moves in and out of the cells by the process of diffusion. Diffusion involves movement of molecules from higher concentration to lower concentration across the plasma membrane. Water moves in and out of the cells by osmosis. Osmosis is the movement of water or solvent through a semipermeable membrane from a solution of lower concentration of solutes to a solution of higher concentration of solutes to which the membrane is relatively impermeable. Both diffusion and osmosis are physical or mechanical processes and do not require spending of energy for their performance by the cells. The cell membrane is selectively permeable and regulates the movement of substances in and out of the cell. Movement of CO2: CO₂ is produced during cellular respiration. Therefore, it is present in high concentrations inside the cell. This CO₂ must be excreted out of the cell. In the cell’s external environment, the concentration of CO₂ is low as compared to that inside the cell. Therefore, according to the principle of diffusion, CO₂ moves from a region of higher concentration (inside the cell) towards a region of lower concentration (outside the cell). Similarly, O₂ enters the cell by the process of diffusion when the concentration of O₂ inside the cell is low as compared to its surroundings. Movement of water: Water moves from a region of high concentration to a region of low concentration through the plasma membrane. The plasma membrane acts as a semi-permeable membrane, ...