Membranes and transport

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Information about Membranes and transport

Published on March 7, 2014

Author: MrsP41



Describes Membranes and Transport for the BC Biology 12 curriculum.

Membranes and Transport

reactions movement,r:5,s:32&biw=792&bih=454



Membrane Features all some living cell membrane es/1010/mangels/neuro/neurosignaling/neurosignaling.html&docid=F0l6mMXF7d9EyM&w=150&h=150&ei=m_OETs7EIjQiALrOi5DA&zoom=1&iact=hc&vpx=263&vpy=196&dur=2687&hovh=120&hovw=120&tx=64&ty=93&page=1&tbnh=102&tbnw=1 14&start=0&ndsp=8&ved=1t:429,r:1,s:0&biw=792&bih=454

Water, carbon dioxide oxygen glucose Na+ (sodium), H+ (hydrogen) &hl=en&sa=X& 5KOM:&imgrefurl=http://environmentsofcells.wikispac =KPSETvCnDaXZiAKcneGoDA&zoom=1&iact=hc&vpx=21 0&vpy=77&dur=11188&hovh=195&hovw=258&tx=129 &ty=113&page=1&tbnh=114&tbnw=150&start=0&ndsp =7&ved=1t:429,r:1,s:0&biw=792&bih=454 CETpuaJ-bbiALGlqXHDA&zoom=1&biw=792&bih=454&iact=rc&dur=187&page=1&tbnh=87&tbnw=130&start=0&ndsp=8&ved=1t:429,r:7,s:0&tx=81&ty=20

Hydrophilic amphipathic hydrophobic hydrophilic

charged polar NO ATP required. Movement is from HIGH concentration to LOW concentration. ATP ATP required. Movement is from LOW concentration to HIGH concentration.

3 Types of Glycoproteins: identity anchors Attach binding sites receptor enzyme relay responses crosoft:en-us:IESearchBox&tbm=isch&prmd=imvns&tbnid=JDLG4Crcfay0oM:&img refurl= hiAKe25ivDA&zoom=1&biw=792&bih=450&iact=rc&dur=281&pag e=1&tbnh=77&tbnw=117&start=0&ndsp=10&ved=1t:429,r:7,s:0&t x=47&ty=49

3 Types of Transmembrane Proteins Active team

hooked ellular+junction&hl=en&sa=X&rls=com. microsoft:en-us:IESearchBox&tbm=isch&prmd=imvns&tb nid=YyI3Tl_1CxABiM:&imgrefurl=http:/ / cellular%2Bjunctions&docid=UbA7Fees A06PRM&w=250&h=195&ei=YQGFTrC DOsnXiAKQxcypDA&zoom=1&iact=hc& vpx=96&vpy=158&dur=609&hovh=156 &hovw=200&tx=121&ty=117&page=1 &tbnh=117&tbnw=151&start=0&ndsp= 15&ved=1t:429,r:0,s:0&biw=1024&bih= 596

electrons e=7&tbnh=91&tbnw=151&start=105&ndsp=18&ved=1t:429,r:17,s:105&biw=1024&bih=596

rigidity restrains prevents, r:18,s:15&tx=38&ty=31

Carbohydrate markers oligosaccarides glycolipids Ex. Stem cells

Transport Mechanisms

inside outside Random away 6GxWvR60SVLM&w=741&h=600&ei=LP6ITvbINuXiiAKs9KGlDA&zoom=1&iact=hc&vpx=613&vpy=190&dur=4024&hovh=202&hovw=250&tx=111&ty=64&page=1&tbnh=15 6&tbnw=193&start=0&ndsp=10&ved=1t:429,r:2,s:0&biw=1280&bih=555

DOWN UP (AGAINST) Energy (ATP) NO added energy Diffusion Osmosis Phagocytosis Facilitated Diffusion Pinocytosis Active Transport

Diffusion =en&sa=X& d=imvnsfd&tbnid=ki5mLhGb7aQJPM:&imgrefurl=http://wate i68vEUpnM&w=146&h=170&ei=eBuJTpaFOujciALe4IS6DA&z oom=1&iact=hc&vpx=899&vpy=299&dur=3292&hovh=136& hovw=116&tx=87&ty=107&page=2&tbnh=136&tbnw=116&st art=18&ndsp=10&ved=1t:429,r:3,s:18

Process of diffusion 4-23

energy down increases increases faster selectively

water Of water 8&h=169&ei=2B2JTrLXE4zbiALm3dSgDA&zoom=1&iact=hc&vpx=903&vpy=145&dur=2355&hovh=135&hovw=334&tx=215&ty=67&page=10&tbnh=85&tbnw=211&start=106&ndsp=12&ved=1 t:429,r:11,s:106

Net movement of water is from A to B. A is HYPOTONIC to B B is HYPERTONIC to A C is ISOTONIC to D D is ISOTONIC to C

A A B B A B Add protein to side B Semi-permeable membrane Equilibrium: osmotic pressure = hydrostatic pressure.

http://www.youtub NFSvp8lY

Facilitated Diffusion

High to low concentration (down a concentration gradient.) carrier polar hundreds energy

binding releasing

hydrophilic specific MITTER+BINDING+TO+SODIUM+GATES&hl=en &sa=X& ns&tbnid=r1r0janwHpXtsM:&imgrefurl=http:/ / ard.aspx%3Ftopic%3Dsodium%2Bchannel%2B activity%252C%2Bvoltagegated%26rootID%3D51580%26searchSource% 3Dall&docid=NqkLKLOzEYCesM&w=180&h=15 0&ei=_ymJTqOdCYbXiALyt524DA&zoom=1&ia ct=hc&vpx=507&vpy=201&dur=889&hovh=12 0&hovw=144&tx=107&ty=52&page=3&tbnh= 120&tbnw=144&start=35&ndsp=12&ved=1t:4 29,r:8,s:35&biw=1280&bih=555

Active Transport

ENERGY Carrier (transport) against steep

conformations inside Phosphorylation

positive potential

1. H+ pumped out 2. H+ diffuses in with sucrose. Sucrose can only enter with H+. Wiz_AyKUWTXfjM:&imgrefurl= bios100/lecturesf04am/lect19.htm&docid=CFN3b259gj6SfM&w= 800&h=600&ei=fjOJTuKJMMjYiALLjM2gDA&zoom=1&iact=hc&vp x=371&vpy=132&dur=4212&hovh=194&hovw=259&tx=127&ty= 117&page=1&tbnh=103&tbnw=141&start=0&ndsp=25&ved=1t:4 29,r:2,s:0

Exocytosis 4-43

Phagocytosis 4-44

Phagocytosis Pseudopods lysosome lysososome

Pinocytosis 4-46

Pinocytosis Non-discriminating

Receptor-mediated endocytosis 4-48

Receptor-mediated s&hl=en&sa=X& mvns&tbnid=aPXYAkbavvS7M:&imgrefurl= &zoom=1&iact=hc&vpx=848&vpy=256&dur=3073&hovh=179&h ovw=240&tx=127&ty=138&page=2&tbnh=150&tbnw=201&start =11&ndsp=11&ved=1t:429,r:3,s:11 discriminating

bulk receptor proteins

Read and make notes on Chapter 4. Read critically and take selective notes.

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