Mechanisms of movement
A cell membrane lets some molecules pass. This property is known as
Selective permeability/semi permeable
The movement of materials across a cell membrane using energy. The movement is from low to high.
Diffusion
This solution has the same amount of dissolved substances as a cell
Isotonic solutions
Organelle responsible for moving substances through the cell
Vesicle
The protein responsible for the process of moving ions across the membrane against their concentration gradient
Ion pump/pumps
The movement of materials across a cell membrane without using energy. The movement is from high to low.
Passive transport
The diffusion of water through a semipermeable membrane
Osmosis
This solution has more dissolved substances than a cell. The cell will shrink as it loses water.
Hypertonic solutions
The shrinkage of the cytoplasm of a cell due to osmosis.
Plasmolysis
The transport proteins that allow ions to pass through the cell membrane
What are ion channels?
The movement of materials across a cell membrane that requires energy. The movement is from low to high.
Active transport
Perfume moving across the room is an example of
Simple diffusion
This solution has less dissolved substances than a cell. The cell will swell as it gains water.
Hypotonic solutions
The process of moving solid material into a cell using a vesicle.
Phagocytosis
The process of moving material into a cell using a vesicle.
Endocytosis
Active transport requires energy from this molecule.
ATP
The more rapid movement of molecules from a region of high concentration to a region of low concentration that requires energy
facilitated diffusion
The beaker in which water will diffuse into the baggie.
What is beaker 1?
The process of moving liquid material into a cell using a vesicle.
Pinocytosis
The process of moving material out of a cell using a vesicle.
Exocytosis
The difference in concentration between a region of high concentration and a region of low concentration
The concentration gradient
What are osmosis and diffusion trying to achieve?
Equilibrium
When a plant cell is placed in a saltwater solution the cell will
Lose water and the cell membrane will move away from the cell wall
Why must starch be digested into glucose molecules?
Starch is too large to fit through the cell membrane they must be broken down into monosaccharides to fit through the membrane
What is the name of the special proteins that facilitate the diffusion of water across the cell membrane during osmosis?
Aquaporins