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Chapter 4 Blog: General Features of Cells (John)

Page history last edited by John Bender 14 years, 4 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

Today in class on 9/22, we mainly were lectured on the two differnt types of cells.  The two types are Prokaryotic and Eukaryotic cells.  The whole lecture was a review because we learned about this same choter in biology class in Freshman year, and in A+P class in sophmore year. But anyway, we went over the differnt structres of prokaryotic cells and Eukaryotic cells.  We discussed on how they were differnt.  Ex: prokaryotic doesnt have a nucleus or organelles when Eukaryotic cells do.  Also,   that Eukaryotic cells are bigger than Prokarytoic.  We also learned about the functions of the Rough E.R., The Smooth E.R., the golgi apparatis, and vessicles, and how vessicles transport proteins nd other stuff throught the cell. 

 

In Class on 9/24 we learned began talking about the flow of genetic information, and about Prtoein destination.  Dr. Webber asked a few quetions about protein destination.  "How does the protein now where to go after transcription"?  The answer to that question was that there is a particle called the SRP.  The Signal Recognition Particle, and that particle binds to the first few amino acids when they are being formed in the cytoplasm by peptide bonds.  Now this particle guides the protein and the ribsomes to its next stop, which would usually be in the Rough E.R. and the translation would continue after the SRP gets clipped off.  Now the next qyestion was:  "What would happen if there was no SRP"?  The answer to that question was that the protein wouldn't know where to go.  It would just get lost somewhere in the cytomplasm.     

 

 "Now I really like you guys you're a great group of kids, i enjoy teaching your group, but you guys can't go around with chalk tagging everything in sight".........lol

B.  Useful Materials

http://www.wisc-online.com/objects/ViewObject.aspx?ID=ap11604   

This web site is great.  It goes through every organelle of the eukaryotic cell.  Than you can click on any part of the cell, and you guess what it is.  Than it shows you what organell it is and its fucntion. 

 

 

 http://www.youtube.com/watch?v=rvfvRgk0MfA

This youtube video shows protein trafficing.  Specifically, when the proteins leave the Rough E.R. and are sorted and packaged in the Golgi.   And how they get from oragnelle to organelle.  ( i tried embedding this video but it wouldnt work, it said invalid video)

 

http://www.ncbi.nlm.nih.gov/pubmed/20709758

 

In class we learned about protein traffiking.  This is when proteins that are made in the Rough E.R.  are transported through vessicles to the Golgi Appartais where they are modified and sent to whereever they need to go.  This article shows how cystic fibrosis is caused by an error in protein traffiking when mutations in the cystic fibrosis transmembrane conductance regulator  prevent its proper folding and trafficking to the apical membrane of epithelial cells. 

 

 

Comments (1)

Derek Weber said

at 12:52 am on Nov 23, 2010

I like the jounal article. Also, nice quote above.

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