| what is active transport. | moving of substances from an area of low conc to high conc |
| what is needed in active transport | a carrier protein is needed |
| explain active transport. | particles have to bind with the carrier protein, ATP has to bind the other side, when it binds it is hydrolysed into ADP and inorganic phosphate, when that hapens you get energy released and causes the protein shape to change. |
| what is the process of exocytosis. | form of bulk transport, large number of particles at once, from inside the cell to outside the cell using a vesicle |
| explain the process of exocytosis. | 1) the vesicle and the cell membrane fuse together
2) now there is an opening, but at no point did the outside of cell make contact with the inside of the cell
3) now the content of the vesicle can go out. |
| what is the process of endocytosis. | another bulk transport, opposite of exocytosis, from outside to the inside of the cell. |
| explain the process of endocytosis | cell membrane invaginates (pinches off, going to become a vesicle |
| what are the 2 kinds of endocytosis? | phagocytosis - WBC
pinocytosis - same things but smaller vesicles (tranporting liquids) |
