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Cation

Cation

(Science: chemistry) a positively-charged ion.


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Discussion of Cocamidopropyl betaine

surfactant derived from coconut oil and dimethylaminopropylamine.[1] It is a zwitterionic chemical compound with a quaternary ammonium cation. It is a viscous pale yellow transparent liquid and is used as a surfactant in bath products such as shampoos and hand soaps, and in cosmetics as an ...

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by vikasm
Sat Jul 11, 2009 7:15 am
 
Forum: General Discussion
Topic: Discussion of Cocamidopropyl betaine
Replies: 0
Views: 98

Re: "salt of DNA"

The phosphates of the DNA polymer are negatively charged. They will bind a cation as a counterion to achieve electroneutrality--usually Na+ or K+. That makes the polymer a "salt" of [Na+] x [DNA-].

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by blcr11
Fri May 30, 2008 12:07 am
 
Forum: Molecular Biology
Topic: "salt of DNA"
Replies: 2
Views: 599

Please Help Hydrophilic Molecules

cation and anions are the answers to the blanks. anions are negatively charged ions cations are positively charged ions.

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by luay
Wed Sep 05, 2007 5:06 am
 
Forum: Molecular Biology
Topic: Please Help Hydrophilic Molecules
Replies: 2
Views: 504

metal cation vs bacteria

... sorry, but I don't know what you mean by biofilm. You're looking for some information about an impact of heavy meatl cations on bacterial cells, right? That's right! But not for heavy metal cation, for example, Na, K, Mg,Ca and the other trace metals.

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by gfxmu
Thu May 10, 2007 1:47 am
 
Forum: Microbiology
Topic: metal cation vs bacteria
Replies: 5
Views: 1220

metal cation vs bacteria

Hi, I am doing effects of some metal cations on biofilm formed by bacteria. How can I get the basic knowledge of their biological functions to bac? I come from China and poorly in english expression. Thanks for you advises.

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by gfxmu
Wed May 09, 2007 12:03 pm
 
Forum: Microbiology
Topic: metal cation vs bacteria
Replies: 5
Views: 1220
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