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Biophysical Events

Learning Unit 2 Presentation
by

Brad Johnson

on 11 April 2017

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Transcript of Biophysical Events

Biophysical Events
Molecular Effects of Radiation
Direct mechanism
Indirect mechanism
changing the structure of a molecule
atoms
molecules
cells
tissues
organs
whole body
somatic
genetic
What's the damage?
main-chain scission
cross-linking
point mutation
target theory
master or key molecule must be inactivated
hit
DNA
probability
Radiolysis of Water
80% H2O
1% DNA
uncharged
single unpaired e-
in outer shell
extremely reactive
free radical *
2 hydrogen atoms walk into a bar...
a million times smaller than a grain of sand
http://education.jlab.org/qa/atom_model_03.gif
http://imagecache2.allposters.com/images/PTGPOD/385476c-FB.jpg
http://www.mustreadstuff.com/wp-content/uploads/2009/10/Microscopic-Images-from-Inside-the-Human-Body.jpg
http://www.abcam.com/ps/datasheet/images/ab23926_heart%20muscle%20crop.jpg
http://files.turbosquid.com/Preview/Content_2009_07_16__02_01_06/AllFrontnoskin.tgaf24fe1a2-4c70-4e30-9d6d-1a79499e6152Large.jpg
http://www.japaninc.com/files/images/mgz_74_cancer_human-body.size300.jpg
http://www.dailymail.co.uk/sciencetech/article-1209726/Single-molecule-million-times-smaller-grain-sand-pictured-time.html
http://blog.makoollovesyou.com/wp-content/uploads/2008/02/red_ceremonial_scissors.jpg
http://eggheadmarketing.files.wordpress.com/2008/02/glue.jpg
http://www.af.mil/shared/media/photodb/photos/081017-F-7777K-101.jpg
http://rst.gsfc.nasa.gov/Sect20/A12.html
Full transcript