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8 terms

Christensen CH1 Anatomy & Physiology

Active and Passive Transport
STUDY
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Active transport
movement of materials across the membrane of a cell by means of a chemical activity that allows the cell to admit larger molecules than would otherwise not be able to enter the cell, it requires energy
Phagocytosis
Process that permits a cell to engulf or to surround any foreign material and to digest it
Pinocytosis
Cell Drinking," Movement of fluids and dissolved molecules into a cell by trapping them in a section of the plasma membrane.
Calcium pump
Movement of solute particles from an area of low concentrations to an area of higher concentrations by means of a carrier molecule.
Passive transport
Movement of small molecules across the membrane of a cell by diffusion, osmosis or filtration, it requires no energy
Diffusion
Solid particles in a fluid move from an area of higher concentration to an area of lower concentration.
Osmosis
The passage of water across a selectively permeable membrane, with water molecules going from the less concentrated solution to the more concentrated solution.
Filtration
The movement of water and particles through a membrane by force.