How does agno3,H2O2,HOCL,betadine/povidone,zephiran chloride,and
cotylpridinuim react when in a cell to kill bacteria?

My microbiology is a little hazy, but here is what I remember. 

AgNO3 (Silver Nitrate) and H202 (Hydrogen Peroxide) are both oxidizing
agents. They will oxidize various components of the bacteria most
importantly the cell membranes.

HOCL (hypochlorous acid) - "Hypochlorous acid kills bacteria and other
pathogens by attacking the lipids in the cell walls and destroying the
enzymes and structures inside the cell through an oxidation reaction"
- HowStuffWorks.com

Zephiran chloride is the trade name for Benzalkonium chloride. It is a
quatenary ammonium compound so it has surfactant quality which has a
detergent like property, disrupting cell membranes. Cetylpyridinium
chloride has a similiar effect - it acts on the cell membrane
resulting in a generalized loss in its function as a permeability
barrier.

Best of luck
jpariag-ga

Well I'm a chemist not a microbiologist but the last answer was pretty
spot on... The chemicals don't go into the cell, they simply cause the
cell to burst open by dirupting the cell membrane (I think that's just
what the other guy said!)