Transport in cells

• 3 types of transport are active transport, osmosis and diffussion
• Diffusion and active transport include transport of solutes
• Active transport and osmosis move through a partially permeable membrane
• Diffusion and osmosis both do not require energy and move passively over the concentration gradient from high to low concentration
• Diffusion is spreading out of particles of any substance in solution from high to low concentration gradient until equilibrium is reached
• In diffusion the greater the temperature the greater the movement of particles meaning more collisions and a faster rate of diffusion
• In diffusion a greater surface area means there's more space to move through increasing the rate of diffusion
• The higher the concentration gradient the faster the rate of diffusion
• Diffusion doesn't require energy as particles move down gradient passively
• Osmosis is the movement of water from high to low concentration through a partially permeable membrane
• In osmosis water moves from dilute(high concentration of water) to concentrated (low concentration of water) solution
• Osmosis is basically the diffusion of water
• If the external solution is more dilute and goes into cell, it causes the cell to burst
• Active transport is movement of particles from an area of low concentration to an area of high concentration.
• Active transport goes against the concentration gradient
• Active transport isn't as passive as diffusion but requires energy
• Active transport happens in the gut when moving substances move into the bloodstream
• Active transport also happens in root hair cells, mineral ions in the plant are too highly concentrated to diffuse
• A passive process is where energy isn't required
• Active transport is where energy is required
• Diffusion, osmosis and active transport are all about movement of particles
• Hypotonic is where cells swell and eventually burst, they have a low concentration and cell has more solute than water and they become turgid (swollen)
• Hypotonic is where cells swell and eventually burst, they have a low concentration and cell has more solute than water and they become turgid (swollen)
• Isotonic is normal cells, with the same concentration of solutes and water inside and outside the cell, they're flaccid (not firm)
• Hypertonic is where the cells are shrivelled and have a high concentration, the cell has more water than solute and they are plasmolyzed (shrink)