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Chapter 11
Chapter 11 vocabulary
| Term | Definition |
|---|---|
| A plot of _______index vs AA residue number in a protein predicts potential membrane proteins; such a plot is NOT useful for predicting -barrel transmembrane segments. | hydropathy |
| The structual organization of lipids in biological membranes | bilayer |
| One category of ______-_______ ATPases that are responsible for the production of ATP in mitochondria and chloroplats; they are also known as ATP synthases. | F type |
| ______ refers to the simulaneous transport of two solutes across a membrane in opposite directions | antiport |
| ______ proteins are very firmly associated with the membrane via hydrophobic interactions with the fatty acidchains of membrane lipids. | integral |
| The _____ potential takes into account the effects of the chemical concentration gradient and the electrical gradient. | electrochemical |
| An example of a(n) ______ gated ion channel is the acetylcholine receptor. | ligand |
| The _____ family of integral proteins provides channels for rapid movement of water acrossplasma membranes. | aquaporin |
| Facilitated diffusion is also called _______ transport. | passive |
| The transport of solutes against a concentration or electrochemical gradient that requires the input of energy is known as _______ transport | active |
| Ion-selective ________ provide a route for the rapid movement of of ions across mmbranes | channels |
| Simultaneous transport of two solutes across a membrane, in either the same or opposite directions. | cotransport |
| A membrane protein in an intact erythrocyte that reacts with trypsin must have at least one domain exposed on the ______ face of the lipid bilayer | outer |
| ______; transport of a single solute across a membrane | uniport |
| An ion ______ is a source of potential energy that drives secondary transport processes in cells. | gradient |
| ______ interactions among lipid molecules in water drive the formation of micelles, bilayers, and liposomes. | hydrophobic |
| The NaK _______ is an example of a cotransporter that is critical to the function of all cells. | ATPase |
| Type of diffusion that occurs down a concentration gradient. | simple |
| Membrane component that can modulate membrane fluidity | cholesterol |
| The major class of membrane lipids, in terms of weight percent. | phospholipid |
| _____-______ ATPases that are reversibly phosphorylated by ATP-as part of the transport process. | P-Type |
| ______ diffusion is mediated by an integral membrane protein that lowers the activation energy for transport, this process exhibits saturation kinetics | glycolipid |
| SNAREs are proteins required for membrane _____ in the process of exocytosis. | fusion |
| "Flip-flop" of lipids in membrane bilayers is also known as ______ diffusion; facilitated by flippases | transbilayer |
| Describes the polar head groups of membrane lipids and peripheral membrane proteins. | hydrophilic |
| The evocative name of the model describing the structure of biological membranes is the ________mosaic model. | fluid |
| Proteins and phospholipids rarely exhibit this type of movement in membranes without an input of energy. | flip-flop |
| Face of the lipid bilayer where 2 K ions are released by the NaK ATPase. | inner |
| Type of rapid diffusion exhibited by both lipids and proteins in membranes. | lateral |
| The transport of two solutes in the same direction across a lipid membrane. | symport |
| ____________-___________ ATPases pump protons, regulating the pH of intracellular components | v-type |
Created by:
hilarye
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