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Q: "Action of Zinc / Copper on Gloeocapsa magma" ( No Answer,   0 Comments )
Subject: "Action of Zinc / Copper on Gloeocapsa magma"
Category: Science
Asked by: lynnee123-ga
List Price: $100.00
Posted: 04 Jun 2006 16:20 PDT
Expires: 04 Jul 2006 16:20 PDT
Question ID: 735305
"Gloeocapsa Magma" belongs to a class of cyanobacteria (Blue Green
algae) which are thalakoid in nature.  They are responsible for the
black streaks often seen down the sides of roof shingles.  Low
concentrations of Copper or Zinc metal in solution are toxic to the
I need more knowledge about the exact mechanism as to how Copper and
Zinc metals are toxic to the alga in question. Information needed to
a) Structure of gloeocapsa magma, in particular its membrane / capsid structure
b) Sensitivity to oxygen concentration, and how this affects its
photosynthetic rate.
c) Mechanism of membrane action with metal ions and how the metal ions
provide toxicity.  Might enzyme action be a factor?  If so, are metal
ions acting as a non-competitive inhibitor?
Please be very specific in your answers
There is no answer at this time.

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