Transportation of Molecules Flashcards
(13 cards)
Passive Transport
the movement of molecules across the cell membrane from high to low concentration without using energy
Diffusion
The movement of molecules from a high to low concentration unitil equilibruim is reached. No energy is requied
Diffusion Across Cell Membrane
Small uncharged particles like carbon dioxide and oxygen moves easily through the cell membrane by simple diffusion
Facilitated Diffusion
Facilitated diffusion is the process of diffusion with the help of certain proteins known as carrier and channel proteins. This helps large molecules and pass the phospholipid bilayer.
Osmosis
Osmosis is the process of water moves from a region of high water concentration to a region of low water concentration.
Hypotonic
Greater concentration of solute inside the cell.
Hypertonic
Greater concentration of solute outside the cell
Isotonic
Concentration inside cell is equal to that of the solution
Active Transport
Active transport moves molecules from low to high concentration using energy.
Endocytosis
Moves large molecules into the cell using energy. The cell membrane englufs particles, bring them inside
Phagocytosis
Engulfs solids (cell eating)
Pinocytosis
Englufs fluids (cell drinking)
Exocytosis
Animal and plants cells produce antibodies and enzymes to use elsewhere. Exocytosis transports these by fusing a vesicle with the cell membrane to realease its content