Term
| What three main parts are the human cells made of? |
|
Definition
plasma membrane
cytoplasm
nucleus |
|
|
Term
|
Definition
| membrane structure that depicts the plasma membrane as an exceedingly thin structure composed of a double layer or bilayer of lipid molecule with protein molecules "plugged into" or dispersed in it |
|
|
Term
|
Definition
|
|
Term
|
Definition
| "tail"; two fatty acid chains;water fear |
|
|
Term
|
Definition
| lipids with attached sugar groups; found on outer plasma membrane surface and account for 5% of the total membrane lipid |
|
|
Term
|
Definition
| firmly inserted into the lipid bilayer |
|
|
Term
|
Definition
| attached loosely only to integral proteins and are easily removed without disrupting the membrane. |
|
|
Term
|
Definition
| clings to the cells surface is enriched both by glycolipids and by glycoproteins secreted by the cell |
|
|
Term
|
Definition
| series of integral protein molecules in the plasma membranes of adjacent cells fuse together, forming an impermeable junction that encricles the cell; helps prevent molecules from passing through the extracellular space between adjacent cells |
|
|
Term
|
Definition
| "binding bodies"; mechanical couplings scattered like revets along the sides of abutting cells that prevent their separation |
|
|
Term
|
Definition
| "bond"; communcating junction between adjacent cells |
|
|
Term
| selectively permeable barrier |
|
Definition
| allows some substances to pass while excluding others. it allows nutrients to enter the cell but keeps many undesirable substances out |
|
|
Term
|
Definition
| substances cross the membrane without any energy input from the cell |
|
|
Term
|
Definition
| the cell provides the metabolic energy (ATP) needed to move substances across the membrane |
|
|
Term
|
Definition
| requires carrier proteins that combine specifically and reversibly with the transported substances |
|
|
Term
|
Definition
| fluids containing large particles and macromolecules are transported across cellular membranes inside membranous sacs called VESICLES. |
|
|
Term
|
Definition
|
|
Term
|
Definition
| is the process in which ions are moved across cell membranes against electrochemical gradients using energy supplied directly by ATP |
|
|
Term
|
Definition
|
|
Term
|
Definition
| protein coating found on the cytoplasmic face of the pit |
|
|
Term
|
Definition
| cell eating; clump of bacteria,cell debis,or inanimate particles |
|
|
