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Biology- Prentice Hall
thin flexible barrier around a cell, regulates what enters and leaves a cell.
strong supporting layer around the cell membrane in plants, algea and some bacteria
double layered sheet that forms the core of nearly all cell membranes
the mass of solute in a given volume of solution or mass/volume
process by which molecules tend to move from an area where it is more concentrated to an area where is is less concentrated
when the concentration of a solute is the same throughout a solution
diffusion of water through a selectively permeable membrane.
when the contraction of 2 solutes is the same.
when comaring two solutions, the solution with the greater concentration of solutes
when comparing two solutions, the solution with the lesser concentration.
movement of specific molecules across cell membranes through protein channels
energy-requiring process that moves material across the cell membrane against a concentration difference.
process by which a cell takes material into the cell by infolding of the cell membrane
process in which extentions of cytoplasm surround and engulf large particles and take them into the cell
process by which a cell a cell takes in liquid from the surrounding envirment
process by which a cell releases a large amount of material