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Cell Transport Prezi!

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by

Maha Issa

on 3 March 2013

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Transcript of Cell Transport Prezi!

Cell Transport Prezi! By Maha Issa Diffusion Osmosis Hypertonic Isotonic Active Transport Hypotonic Facilitated Transport Diffusion is the distribution of particles from an area of higher concentration to an area of lower concentration. The movement of water across a semipermeable membrane from an area of high concentration to an area of low concentration (inside or outside the cell. A hypertonic solution is a solution that contains a lower concentration of water than inside a cell, so water leaves the cell to balance the difference and causes the cell to shrivel. A hypotonic solution contains a higher concentration of water outside the cell, causing the water to pass through the membrane into the cell. This causes the cell to swell. Isotonic solutions have balanced concentration with the cell, so there is a constant and equal flow of water in and out of the cell. Active transport is the movement of substances in and out of a cell using energy against the concentration gradient. Facilitated transport is a form of passive transport that uses transport proteins in the phospholipid bilayer (cell membrane) to allow particles into the cell that may be too big to pass through the semipermeable membrane that the cell needs. When you spray perfume, the particles move from the area of high concentration (where you just sprayed) to the area of low concentration (the rest of the room. "Just trying to diffuse the tension..."
-Fred Weasley Explanation of Osmosis^ Osmosis in blood cells: High concentration of water outside of the cell-> Equilibrium ^ <-High concentration of water inside the cell Phagocytosis, as seen in the picture above, is an example of active transport because the cell uses energy to wrap the cell membrane around a particle to engulf it and bring it into the cell for whatever use it's needed for. Endocytosis Endocytosis is when a cell wraps the membrane around a particle to take it in as food or for other uses- it's how we got our mitochondria! weeeee! staaaars! Nooo.... don't eat me... swim away... SWIM AWAY!!!! Exocytosis Exocytosis is when a cell uses energy to expel substances from inside the cell into the environment surrounding the cell. Uh oh... I feel a yawn coming on. YAAAWWWNNN Aaaand it's gone. Really though, what's happening here is that the cell uses a vesicle to encase the substance, bring it to the surface of the cell, and 'unwrap' the cell membrane from the substance, letting it out of the cell. A cell may do this to remove waste or other harmful substances. Note: This has nothing to do with osmosis, and neither does the movie Osmosis Jones. Oh well, a little random is good for you. Just like equilibrium and homeostasis, right? THE END! Fin! Bye!

See ya! Wait... You were still here?
You saw all that?
Oh.
Hehe.
For real though: THE END!
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