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Chapter 5 Blog:  Membrane Structure, Synthesis, and Transport (John)

Page history last edited by John Bender 13 years, 9 months ago

In the first section of this page, you will write a daily summary of that day's class.  For example in  your chapter 2 blog, your first entry should be titled 9/3/10.  You should then write a one or two paragraph summary of that day's lecture, outlining the major points.  In the second section, you are required to add two items (link to a website, video, animation, student-created slide show, student-created PowerPoint presentation) and one journal article pertaining to a topic in this chapter.  A one-paragraph summary must accompany each item describing the main idea and how it applies to the lecture topic.  Please see the PBWorks help guide for assistance embedding video and other items directly in the page.  I will also produce a how-to video on using tables to wrap text around items and other useful tips.  Please see the syllabus for organization and grading details.


A.  Daily Blog

In class on 9/29, we were introduced to a new chapter.  This chaoter is about the cell membrane.  We leanred that they are made up of a phosphoipid bilayer.  And that the inside of the bilayer is hydrophobic and the outside is hydropholic.  And how there is cholesteral and other things in the cell membrane, line proteins channels and carriers to pass large molecules through.  We also learned about glyocoproteins and endo and exocytosis.  Endocytosis is when a vessile is carring a big amount of tuff into the cell, and it gets in by fussing ith the cell memebrane.  Exocytosis is when the vessicle takes all the stuff and dumps it ouutside of the cell. 


In class on 10/1, we kept reviewing chapter 5 because we have a test on chapters 2-5 on friday.  We went over our poll questions, active and passive transport, and how the of thermodynamics will hep us undertsand the concentration gradietns with active and passive transport.  The law that e learned about was that energu cannot be created or destroyed, it can only be transferred.  After that Dr. Webber asked us if we want more review or if want to do a lab, but the class wanted to review more, so we learned about the Sodium potassium pump.  Ex: how with a phosphate from ATP attaches to the pump to open and close itself so sodium can go out, and potassium can come in. 


B.  Useful Materials

  This video explains active diffusion across a cell membrane.  Which is what we're been talking about in class.


  This video goes over endo and exocytosis, if anyone is unclear about the two processes i strongly recommend they watch this video because its very short, simple, and to the point. 




This article is talking about a test they are doing with a poisionous shrub called Cleistanthus collinus.  This shrub is mainly used for suicidal purposes, so these scientists are going to inject this poisin in a rat and see its activities, and maybe they can find a way to reverse the effects, so humans can't commit suicide with it.  This is revevant because when the poisin was injected all the protein pump activity was stopped.  Including the sodium potassium pump.  And in rats when that is stopped it comes down with type I DRTA in rats.  This causes the test animals develop respiratory acidosis, and the immediate cause of death is respiratory arrest.































Comments (1)

Derek Weber said

at 12:53 am on Nov 23, 2010

Need to add more detail to your summaries.

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