Archive for September, 2008

Genetics:DNA Cloning

Wednesday, September 17th, 2008

Genetics is study and science of heredity and genetic variation in living organisms. DNA is a protein that is encoded with particular inforamtion to pass on from generation to generation. Whne these are mixed together one gets the practice of DNA cloning. This is a process that works in effort to reproduce DNA fragments. There are multiple steps to take in this process: DNA recombination; transformation; and selective amplification. DNA recombination is the simple process of placing a DNA fragment into a vector, which is basically a host containing an anitbiotic-resistance gene. From there the recombinant vector is placed into an e. coli cell treated with CCl(2), thus they can then be proliferated throught selective amplification, or reproduced in a selective manner. The cells without the vectors in it die out. This allows certain DNA fragments to be reprocude in a bulk.

Cited Source: http://www.web-books.com/MoBio/Free/Ch9A.htm

Bio Princ. Carbohydrates

Sunday, September 7th, 2008

This is a “quality” Seaco-Chicken Sandwich covered in honey mustard! One may indulge in such a sandwich to satisfy ones hunger; in doing so they are taking in carbohydrates through starch, sugar (saccharide), and fiber. Once carbohydrates are taken in, then the body then breaks down the carbohydrates into glucose or multiple types of monosaccharide, which then may enter the bloodstream or be turned into energy or stored as fat for the body to use later.  This sandwich looks like a great source of carbohydrates. If the bread was in fact whole grain it would be an even better source, however considering that it is white bread, the carbohydrates are easily digested.

 

Source:

(http://www.hsph.harvard.edu/nutritionsource/what-should-you-eat/carbohydrates-full-story/index.html)


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