Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
8 Cards in this Set
- Front
- Back
|
Cell Membrane (it's parts and function) |
-Acts as gateway for substances to move into and out of cells -it's selectively permeable -it blocks harmful substances form entering the cell and removed waste -2 layers of fat particles with proteins embedded within. Some proteins act as channels, substances can enter or leave the cell through the channels |
|
|
Diffusion (what is it, how does it happen and why) |
-The movement of particles from an area of higher concentration to an area of lower concentration -when particles are highly concentrated in one area they will defuse throughout the area -diffusion occurs so the particles will be equal throughout the area |
|
|
Concentration Gradient |
-A difference in concentration of a substance between two areas |
|
|
Osmosis |
-The diffusion of water across a selectively permeable membrane from an area of higher water concentration (or low solute concentration) to an area of lower water concentration (or high salute concentration) -water molecules move into or out of the cell until the concentration of water molecules on both sides of the membrane is equal |
|
|
Similarities and Differerences between osmosis and diffusion |
-both occur in/outside the cell membrane -both happens when particles/water molecules are in an area of high concentration and move to an area of low concentration to be equal -diffusion moves various things like scent particles, nutrients, waste. Osmosis only moves water. |
|
|
Turgor Pressure (what it is and what happens) |
-The outward pressure that is exerted on a plant cell wall by the cell contents when water is taken in by osmosis -when the plant takes in water by osmosis the plant becomes turgid and will be stiff and stand up right, when the plant loses water by osmosis the plant will become less turgid and wilt. |
|
|
Endocytosis Exocytosis |
Endo/ The process by which a cell moves large amounts of material, or non-dissolved particles, into its cytoplasm from the outside environment Eco/ The process by which large amounts of material, or large non-dissolved particles, are moved from a cells cytoplasm to the outside environment |
|
|
Endocytosis Exocytosis |
Endo/ The process by which a cell moves large amounts of material, or non-dissolved particles, into its cytoplasm from the outside environment
Eco/ The process by which large amounts of material, or large non-dissolved particles, are moved from a cells cytoplasm to the outside environment |
