cellular transport - wordpress.com · cellular transport passive active simple diffusion...
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Cellular Transport
Phospholipids
Phospholipid Bilayer
Phospholipid Bilayer
Fluid Mosaic Model
https://www.youtube.com/watch?v=Qqsf_UJcfBc
How easily will each molecule pass through the membrane. WHY??
Cellular Transport
Passive Active
Simple Diffusion
Facilitated Diffusion
Proteins and ATP
Endocytosis
Exocytosis
Osmosis
Small, nonpolar
Hypertonic, Hypotonic, Isotonic
Carrier/Channel proteins
Passive Transport
Simple Diffusion
Osmosis
http://leavingbio.net/OSMOSIS%20AND%20DIFFUSION.htm
Solute concentration is HIGHER outside of the cell
Solute concentration is LOWER outside of the cell
Osmosis
https://www.youtube.com/watch?v=3RTvFFZxRo8
Osmosis
Osmosis Activity
Facilitated Diffusion
Carrier Protein OR Channel Proteins
Facilitated Diffusion
Carrier Protein
Channel Proteins
Passive Transport: Summary
https://www.youtube.com/watch?v=PRi6uHDKeW4
Active Transport
• Examples: sugars, amino acids, nutrients, ions, etchttps://www.youtube.com/watch?v=eDeCgTRFCbA
The Na+/K+ Active Transport Pump
Endocytosis
Cell eating; endocytosis of solid particles
Cell drinking; endocytosis of fluid droplets
The process of importing specific macromolecules into the cell
Ex. Neutrophil Ex. Low Density Lipoprotein LDL
Exocytosis
Exports macromolecules from a cell by fusion of vesicles with the plasma membrane.
Large, polar molecules • Example: insulin secretion