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Outermost part of the cell
Outermost part of the cell
cell membrane
Separates substances of the extracellular fluid from those materials within the cytoplasm
Separates substances of the extracellular fluid from those materials within the cytoplasm
cell membrane
Acts as a selective permeable barrier
Acts as a selective permeable barrier
cell membrane
TWO TRANSPORT MECHANISMS
TWO TRANSPORT MECHANISMS
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Does not require the cell to expend energy or ATP;
Does not require the cell to expend energy or ATP;
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It includes diffusion, osmosis, and facilitated diffusion
It includes diffusion, osmosis, and facilitated diffusion
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It includes secondary transport, endocytosis, and exocytosis
It includes secondary transport, endocytosis, and exocytosis
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Solutes, such as ions and molecules tend to move from an area of higher concentration of a solute to an area of lower concentration
Solutes, such as ions and molecules tend to move from an area of higher concentration of a solute to an area of lower concentration
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The diffusion of water (a solvent) across a selectively permeable membrane, from a region of higher water concentration to one of lower water concentration.
The diffusion of water (a solvent) across a selectively permeable membrane, from a region of higher water concentration to one of lower water concentration.
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a carrier-mediated transport process that moves substances across the cell membrane from an area of higher concentration to an area of lower concentration of that substance
a carrier-mediated transport process that moves substances across the cell membrane from an area of higher concentration to an area of lower concentration of that substance
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a carrier-mediated transport process that moves substances across the cell membrane from regions of lower concentration to those of higher concentration against a concentration gradient
a carrier-mediated transport process that moves substances across the cell membrane from regions of lower concentration to those of higher concentration against a concentration gradient
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involves the active transport of one substance, such as sodium, across the cell membrane, establishing a concentration gradient
involves the active transport of one substance, such as sodium, across the cell membrane, establishing a concentration gradient
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involves the active transport of one substance, such as sodium, across the cell membrane, establishing a concentration gradient
involves the active transport of one substance, such as sodium, across the cell membrane, establishing a concentration gradient
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The diffusion of the transported substance down its concentration gradient provides the energy to transport a second substance such as glucose, across the cell membrane
The diffusion of the transported substance down its concentration gradient provides the energy to transport a second substance such as glucose, across the cell membrane
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uptake of material through the cell membrane by the formation of a vesicle
uptake of material through the cell membrane by the formation of a vesicle
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secretory vesicles move to the cell membrane, where the vesicle membrane fuses with the cell membrane, and the material in the vesicle is released from the cell
secretory vesicles move to the cell membrane, where the vesicle membrane fuses with the cell membrane, and the material in the vesicle is released from the cell
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one having a low solute concentration (E.g. 0.1% NaCl);
one having a low solute concentration (E.g. 0.1% NaCl);
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0.1% NaCl
0.1% NaCl
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When RBCs are placed in this solution, water enters the cell by osmosis causing the cell to swell
When RBCs are placed in this solution, water enters the cell by osmosis causing the cell to swell
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one having a concentration of solutes equal to that inside the cell
one having a concentration of solutes equal to that inside the cell
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0.9% NaCl
0.9% NaCl
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When RBCs are placed in this solution, water moves into and out of the cell at the same rate. No net water movement occurs, so cells remain their normal shape
When RBCs are placed in this solution, water moves into and out of the cell at the same rate. No net water movement occurs, so cells remain their normal shape
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When RBCs are placed in this solution, water moves into and out of the cell at the same rate. No net water movement occurs, so cells remain their normal shape
When RBCs are placed in this solution, water moves into and out of the cell at the same rate. No net water movement occurs, so cells remain their normal shape
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one having a high solute concentration
one having a high solute concentration
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10% NaCl
10% NaCl
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When RBCs are placed in this solution, water moves by osmosis out of the cell and into the solution resulting in shrinkage
When RBCs are placed in this solution, water moves by osmosis out of the cell and into the solution resulting in shrinkage
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Effects of Hypotonic, Isotonic, and Hypertonic Solutions on Red Blood Cells
Effects of Hypotonic, Isotonic, and Hypertonic Solutions on Red Blood Cells
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Effects of Hypotonic, Isotonic, and Hypertonic Solutions
Effects of Hypotonic, Isotonic, and Hypertonic Solutions
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