Tuesday, January 23, 2007

video molecular blah

I thought the videos were extremely interesting. My favorite part was definitely the mitochondria. I had no idea they traveled along the microtubules with the "millipede-like" leg features, while at the same time moving like an inch-worm. Moreover, I like how they represented the nuclear pore as a passageway that allows only the necessary molecules to pass. That portion of the video reminded me of one of the sci-fi films where you see the space shuttles docking in the crazy alien space cities. ANYWAY, on the note of mitosis and cell replication, I really enjoyed the description of how the DNA is bundled into chromosomes. I had no idea that there were meters of DNA in a single chromatid. From previous studies, I knew that a group of two chromosomes were joined at the centrosome and were eventually pulled apart by the attachment of the microtubules to the kinetochores (sp?). However, this video was the first helpful illustration of the process that I have ever seen. Overall, the videos were impressive.

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