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Day 3.  Facilitated Diffusion – Transport of substances from high concentration to low with aid of proteins  Remember, diffusion is ALWAYS high to low.

Published byJason Turner Modified over 8 years ago

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Presentation on theme: "Day 3.  Facilitated Diffusion – Transport of substances from high concentration to low with aid of proteins  Remember, diffusion is ALWAYS high to low."— Presentation transcript:

1 Day 3

2  Facilitated Diffusion – Transport of substances from high concentration to low with aid of proteins  Remember, diffusion is ALWAYS high to low.  Molecules are ‘allowed’ to pass through membrane with help of Carrier Proteins  No energy needed

3 http://www.youtube.com/watch?v=s0p1ztrbXP Y

4  Active Transport – Movement of substances across a cell membrane from an area of low to high concentration WITH the use of energy.  Against the Concentration Gradient  Low -> High concentration  Endocytosis - Exocytosis

5  Endocytosis – when the cell membrane surrounds a particle, encloses it, and brings it into the cell.  Endo – take in  White blood cells use this process to exterminate threats in our body

6  Exocytosis – The cell releases a substance within it through its membrane.  Exo - release

7 Low to high concentration, in one of two ways: Higher outside <- Exocytosis Higher inside Endocytosis

8  http://www.youtube.com/watch?v=1w10R9lv 7eQ http://www.youtube.com/watch?v=1w10R9lv 7eQ

9  Slug  http://www.youtube.com/watch?v=PiQkebrC w8U http://www.youtube.com/watch?v=PiQkebrC w8U

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