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Water Pollution #2: Heavy Metals  What is it?  Where is it?  How did it get there? Why is it bad?  How do we get rid of it?
Periodic table according to Biology ,[object Object]
The Two Big “Stars” “Lead” Zeppelin  Freddie Mercury
What makes them bad? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Lead and Mercury:  What you (probably) already know ,[object Object],[object Object],[object Object]
How does it get there? Lead ,[object Object],[object Object],[object Object],What groups of people are more likely to be affected?
Why is it bad? Lead
How does lead cause these affects? Mimics zinc in its ability to bind (and block) a glutamate receptor Normal function: excite neurons for plasticity-->  learning and memory Continuously excited --> excitotoxicity --> cell death
Lead and Juvenile Delinquency? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
How does it get there? Mercury  ,[object Object],[object Object],[object Object],[object Object],[object Object]
Why is it bad? Mercury ,[object Object],[object Object],[object Object],[object Object],[object Object]
How does mercury affect the body?  ,[object Object],[object Object],[object Object],[object Object],[object Object]
How does it get to us?  ,[object Object],[object Object]
FDA/EPAdvice  ,[object Object],[object Object],[object Object],[object Object],[object Object],“ But I don’t plan on having kids for 10 years!…”
Results in an aquatic ecosystem Bacteria convert it into  methyl mercury- more toxic! What happens as it is passed along  the food web? Let’s find out!
Biomagnification ,[object Object]

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Leadandmercury09

  • 1. Water Pollution #2: Heavy Metals What is it? Where is it? How did it get there? Why is it bad? How do we get rid of it?
  • 2.
  • 3. The Two Big “Stars” “Lead” Zeppelin Freddie Mercury
  • 4.
  • 5.
  • 6.
  • 7. Why is it bad? Lead
  • 8. How does lead cause these affects? Mimics zinc in its ability to bind (and block) a glutamate receptor Normal function: excite neurons for plasticity--> learning and memory Continuously excited --> excitotoxicity --> cell death
  • 9.
  • 10.
  • 11.
  • 12.
  • 13.
  • 14.
  • 15. Results in an aquatic ecosystem Bacteria convert it into methyl mercury- more toxic! What happens as it is passed along the food web? Let’s find out!
  • 16.