14 terms

Cell Transport 1 (for Final Dec2015)

VI. CELLS A. Microscope use B. Microscopic measurement C. Cell theory D. Prokaryotic cells E. Eukaryotic cells VII. CELL MEMBRANES A. Surface to volume ratio B. Fluid Mosaic Model of membrane structure C. Selective permeability and transport VIII. OSMOSIS AND DIFFUSION A. Cellular homeostasis B. Diffusion and factors affecting its rate C. Osmosis D. Endocytosis E. Exocytosis, phagocytosis, pinocytosis IX. CELL ORGANELLES A. Structure and function of cell organelles B. Compare plant and animal ce…
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Terms in this set (...)

Diffusion
Movement of MOLECULES from area of high concentration to an area of low concentration. (small molecules move this way)
Osmosis
Diffusion of WATER through a semipermeable membrane from a place of higher concentration to a place of lower concentration until the concentration on both sides is equal.
Hypertonic solution
Concentration of solutes outside the cell is higher than the concentration inside the cell, water will move out of the cell
Hypotonic solution
Concentration of solutes outside the cell is lower than the concentration inside the cell, water will move into the cell
Isotonic solution
Concentration of solutes outside the cell equals the concentration inside the cell
Facilitated Diffusion
Use of carrier PROTEINS for diffusion, does not require energy for a molecule to travel across the membrane
Moves molecules from high to low solute concentration
Active Transport
When energy is used to transport molecules across the membrane against the concentration gradient
Uses ATP
Moves molecules from low to high solute concentration
Use of protein
Passive Transport
molecules move with the concentration gradient from high to low concentration NO energy required.
Types of Passive Transport
Diffusion, Osmosis and Facilitated Diffusion
Types of Active Transport
Endocytosis (phagocytosis and pinocytosis)
Exocytosis, and Protein Pumps
endocytosis
Active transport process where a cell engulfs materials with a portion of the cell's plasma membrane and releases the contents inside of the cell.
exocytosis
Expulsion or secretion of materials from a cell.
pinocytosis
A type of endocytosis in which the cell "drinks" droplets of fluid into tiny vesicles.
phagocytosis
"Cell eating"; an active transport process where a cell engulfs solids

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