Chapter 7 - Membrane Structure and Function
3189040715 | Selective Permeability | property of the plasma membrane that allows some substances to cross membrane more easily than others | 0 | |
3189040716 | Fluid Mosaic Model | model of plasma membrane; displays cell membrane as a mosaic of protein molecules drifting in a fluid lipid bilayer | 1 | |
3189040717 | Amphipathic | having both a hydrophilic region and hydrophobic region | 2 | |
3189040718 | Phospholipid | Most abundant lipid in plasma membrane; contains charged, hydrophilic head, and uncharged, hydrophobic tails | 3 | |
3189040719 | Cholesterol | located between phospholipid tails, affects fluidity of cell membrane at different temperature | 4 | |
3189040720 | Integral Proteins | types of cellular membrane proteins, penetrates the hydrophobic core of the lipid bilayer, includes all transmembrane protein | 5 | |
3189040721 | Peripheral Proteins | types of cellular membrane proteins, not embedded into lipid bilayer, they are appendages loosely bounded to the surface of membranes | 6 | |
3189040722 | Glycolipid | a lipid with convalently attached carbohydrates, form hydrogen bond with surrounding water molecules, and act as receptor molecule | 7 | |
3189040723 | Glycoprotein | a protein with convalently attached carbohydrates, form hydrogen bond with surrounding water molecule, and act as receptor molecule | 8 | |
3189040724 | Transport Protein | a protein that allows passage of hydrophilic substances across the membrane | 9 | |
3189040725 | Aquaporin | a transport protein that allows passage of water across the plasma membrane | 10 | |
3189040726 | Passive Transport | diffusion of a substance across a membrane with no energy investment | 11 | |
3189040727 | Diffusion | a type of passive transport, the movement of molecules of any substance so that they spread out evenly into available space | 12 | |
3189040728 | Concentration Gradient | in absence of other forces, a substance will diffuse from where it is more concentrated to where it is less concentrated | 13 | |
3189040729 | Osmosis | a type of passive transport, the diffusion of water across a selectively permeable membrane | 14 | |
3189040730 | Tonicity | the ability of a solution to cause a cell to gain or lose water, the concentration gradient of dissolved substances | 15 | |
3189040731 | Isotonic | no net movement of water across the plasma membrane; concentration of solutes is the same as it is inside the cell | 16 | |
3189040732 | Hypertonic | cell will lose water because concentration of solutes is greater than it is inside the cell | 17 | |
3189040733 | Hypotonic | cell will gain water because concentration of solutes is less than it is inside the cell | 18 | |
3189040734 | Turgor Pressure | the pressure of water inside a plant cell pushing outward against the cell membrane | 19 | |
3189040735 | Facilitated Diffusion | a type of passive transport aided by proteins | 20 | |
3189040736 | Channel Protein | a protein that provides corridors that allow hydrophilic substances across the plasma membrane | 21 | |
3189040737 | Carrier Protein | a protein that changes its shape so it can transport a hydrophilic substance across the plasma membrane | 22 | |
3189040738 | Active Transport | transportation of solutes against its concentration gradient; requires energy (ATP) | 23 |