Small Channels That Form Across The Plasma Membrane - Web some molecules, such as carbon dioxide and oxygen, can diffuse across the plasma membrane directly, but others need help to. Although water is a polar. Web these channels are glycoproteins (proteins with carbohydrates attached) that allow molecules to pass through the membrane. Web osmosis is a special term used for the diffusion of water through cell membranes.
Web these channels are glycoproteins (proteins with carbohydrates attached) that allow molecules to pass through the membrane. Web osmosis is a special term used for the diffusion of water through cell membranes. Web some molecules, such as carbon dioxide and oxygen, can diffuse across the plasma membrane directly, but others need help to. Although water is a polar.