Tuesday, December 11, 2007

Nanoelectrodes could provide bird flu test

Link:http://technology.newscientist.com/channel/tech/dn12999-nanoelectrodes-could-provide-bird-flu-test.html


Summary: The article opens describing finding the presence of specific genes could be as as hard as finding a needle in a haystack but new technology could put an end to that. To do this they wire a DNA strand up to a pair of nanotube electrodes and feed electricity through it. Since DNA with non matching base pairs lets considerably less current flow through it than a pair of matching strands, so they can use this to find certain genes.

What are the major functions of nucleic acids in the cell? To carry genetic information or form structures within the cell.

What are the differences in RNA and DNA? RNA is single stranded while DNA is double, while DNA contains deoxyribose, RNA contains ribose.

List three things you learned from this article in your own words. Electricity can be used to find certain genes, a 27 nm gap is the length of a segment of 80 base pairs of DNA, DNA with non-matching base pairs lets considerably less current flow through it than a pair of matching strands.

What impact would the absence of this organelle have on the cell? Cells woudlnt be able to carry any information to their host.

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