Important questions for Universi ty by Gagre sir , solution
## General Physiology ### Long Answer Questions 1. **Transport Mechanisms Across the Cell Membrane** The cell membrane, or plasma membrane, is a dynamic structure that plays a crucial role in controlling the movement of substances in and out of cells. The various mechanisms of transport include: - **Passive Transport**: - **Simple Diffusion**: Molecules move from an area of higher concentration to an area of lower concentration directly through the lipid bilayer. This process does not require energy. Examples include the diffusion of oxygen and carbon dioxide. - **Facilitated Diffusion**: Utilizes specific transport proteins to move substances down their concentration gradient. These proteins include channel proteins and carrier proteins. An example is the glucose transport into cells. - **Osmosis**: A specific type of passive transport involving the movement of water molecules through a selectiv...
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