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Cellular Transport Vocabulary Words
Terms in this set (16)
General transport mechanism that requires no energy expenditure by the cell, molecules move with the concentration gradient...... molecules move from an area of high concentration to an area of lower concentration (energy that moves the molecules is provided by Brownian
Movement)...... as in colliding pool balls in billiards.
Movement of molecules from an area of high concentration to an area of lower concentration. (passive)
Movement of water molecules from an area of high concentration to an area of lower concentration (passive) (a special form of diffusion)
Movement of molecules from an area of high concentration to an area of lower concentration sped up by openings in the cell membrane (passive)
Movement of molecules that requires a cell to expend energy. (riding a bike uphill)
Active transport of molecules out of a cell. Usually against the concentration gradient. (low to high)
Active transport of molecules into a cell. Usually against the concentration gradient. (low to high)
"Cell drinking" Active transport of tiny amounts of water into a cell. Usually against the concentration gradient. (low to high)
"Cell eating" Active transport of molecules into a cell. White blood cells "eat" foreign particles such as bacteria, viruses...
More solute inside the cell than the water environment that it is living in. Water will enter the cell in an effort to equalize (dilute) the water concentration inside the cell and outside
of the cell. (osmosis)
More solute outside the cell than inside the cell. Water will leave the cell in an effort to equalize (dilute) the water concentration outside the cell and inside the cell.
There is an equal amount of solute inside the cell and in the environment the cell is living in. Water is entering and leaving the cell at an equal rate. (at equilibrium)
To be in balance or in a state of equality
A difference in concentration across a cell's membrane.
energy carrying molecule found in all cells
a semi- permeable membrane that protects and separates the cell.
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