superwolf said:
Passive transport is a biological process in which molecules or particles move across a cell membrane without the use of energy. This movement occurs from an area of high concentration to an area of low concentration, in order to reach equilibrium.
Diffusion is a type of passive transport in which particles or molecules move from an area of high concentration to an area of low concentration. This process occurs spontaneously and does not require the use of energy.
Passive transport works by allowing molecules or particles to move freely across a cell membrane without the use of energy. This movement is driven by the concentration gradient, with molecules moving from areas of high concentration to areas of low concentration until equilibrium is reached.
The rate of diffusion can be affected by several factors, including the concentration gradient, temperature, and the size and shape of the molecules involved. A steeper concentration gradient, higher temperature, and smaller molecules can all increase the rate of diffusion.
Passive transport is essential for cells as it allows them to maintain a balance of molecules and ions inside and outside of the cell. This balance, known as homeostasis, is necessary for cells to function properly and carry out their various roles in the body.