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2.4 transport

TermDefinition
Active transport A form of transport that requires energy as it moves particles from an area of low concentration to an area of high concentration
Passive transport A form of transport that does not require energy as it moves particles from an area of high concentration to an area of low concentration
Diffusion The movement of a substance from an area of high concentration to an area of low concentration
Facilitated diffusion The movement of a substance from an area of high concentration to an area of low concentration through a protein channel in the plasma membrane
Osmosis The net movement of water from an area of high concentration of water to an area of low concentration of water across a semi-permeable membrane
Hypertonic A solution which has a higher concentration of solutes compared to another solution
Hypotonic A solution which has a lower concentration of solutes compared to another solution
Isotonic A solution which has the same concentration of solutes as another solution
Phagocytosis A process where a cell takes in large particles by wrapping its plasma membrane around them
Pinocytosis A process where a cell takes in fluid by pinching off a section of the plasma membrane
Exocytosis A process where a vacuole fuses to the plasma membrane in order to release bulk materials from the cell
Endocytosis A process where a vacuole is formed from the plasma membrane in order to take bulk materials into the cell
Carrier proteins Proteins that use energy to transport specific substances across the plasma membrane
Selectively permeable A membrane that allows some substances to pass through, but not others
Created by: missmuldrew