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Plasma Membrane Structure and Function

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Across
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Protein that is exposed on the outer or the inner surface of the plasma membrane; also termed extrinsic
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A solution which contains a higher concentration of substances compared to another solution
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Having both water-loving and water-fearing parts
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A solution which contains a lower concentration of substances compared to another solution
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A protein that has one or more regions that are physically embedded in the internal regions of the phospholipid bilayer
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Refers to molecules that are not attracted to water molecules
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A method of transport of substances from an area of high concentration to an area of lower concentration, with the aid of a membrane protein
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A process by which water molecules pass through a semipermeable membrane from a less concentrated solution into a more concentrated one
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A substance dissolved in a liquid
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_______ transport refers to the movement of a chemical substance by the expenditure of energy from an area where it is in low concentrations to an area where it is more highly concentrated
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The model that describes the plasma membrane structure
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A membrane protein that transports two molecules at the same time in opposite directions
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When a chemical substance is more concentrated in one area than another it forms a concentration _______
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A membrane protein that transports two molecules at the same time in the same direction
Down
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A type of endocytosis that involves the formation of a membrane vesicle which engulfs a particle such as a bacterium
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A type of endocytosis that involves the formation of a membrane vesicle which internalizes extracellular fluid
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_______ transport is the movement of a chemical substance without the expenditure of energy from an area where it is highly concentrated to one with a lower concentration
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A membrane protein that is capable of transporting ions against a concentration slope using the energy from ATP; typically via conformational changes in the protein
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Refers to molecules or ions that are attracted to water molecules
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A cascade of biochemical reactions in a cell that begins when a molecule (such as a hormone) attaches to a receptor on the cell membrane, and which eventually leads to the cellular response
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A process in which material inside the cell is packaged into vesicles and transported to the extracellular environment
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A structural component of the plasma membrane of animal cells; serves as a building block for synthesizing various steroid hormones
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Half of a phospholipid bilayer
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A solution which contains a similar concentration of substances as another solution
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A plasma membrane microdomain that floats freely in the phospholipid bilayer; it is enriched in fatty substances
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Protein that plays a major role in receptor-mediated endocytosis
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Most channel proteins are _____; this means they open and close to regulate movement of chemical substances