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mollyrf2023

Antibiotic-Resistant Bacteria Have Evolved a Unique Chemical Mechanism, New Discovery R... - 0 views

science.psu.edu/...Booker4-2011

APChemProject resistance how helpful

shared by mollyrf2023 on 14 Jun 14 - No Cached
  • methylation -- a process by which enzymes add a small molecular tag to a particular location on a nucleotide -- a molecule that is the structural unit of RNA and DNA
  • facilitates the proper functioning of the bacterial ribosome -- a gigantic macromolecular machine that is responsible for making proteins that bacteria need to survive
  • antibiotics bind to the ribosome, disrupting its function and thereby killing the bacteria
  • ...1 more annotation...
  • The Cfr protein performs an identical function as the RlmN protein, but it adds the molecular tag at a different location on the same nucleotide. The addition of the tag blocks binding of antibiotics to the ribosome without disrupting its function
chasefortier

HowStuffWorks "How MRI Works" - 1 views

science.howstuffworks.com/mri.htm

AP APCHEM MRI

shared by chasefortier on 28 May 14 - No Cached
  • An MRI scan is the best way to see inside the human body without cutting it open.
  • Doctors may order MRI scans to help diagnose multiple sclerosis, brain tumors, torn ligaments, tendonitis, cancer and strokes,
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