Dictionary » D » Dipole



a molecule that has both negative and positive charges.

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Ionic bonds

... to a number of water molecules, than to each other. The attraction between ions and water molecules in such solutions is due to a type of weak dipole-dipole type chemical bond. Source: Wikipedia

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by Adz795
Sun Aug 07, 2011 6:16 am
Forum: General Discussion
Topic: Ionic bonds
Replies: 2
Views: 5217

Cytokine - Receptor concepts

... affinity as well, though water will most likely be the dominant solvent just beyond the surface of a cell membrane. Specifically hydrogen bonding, dipole-dipole interactions and van der waals interactions tend to make the surfaces of ligand and receptor stick; exclusion of hydrophobic regions by ...

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by jonmoulton
Wed Jun 02, 2010 5:32 pm
Forum: Cell Biology
Topic: Cytokine - Receptor concepts
Replies: 7
Views: 14859

The big Challenge in Biology

... of functional events that culminate in a unique function that happens: evolution is always progressing. So now you have proteins with different dipole moments and charges, and you have nucleic acids forming. They swarm over each other. Matching charges to charges. Some connect, while others ...

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by kolean
Tue May 11, 2010 8:58 pm
Forum: General Discussion
Topic: The big Challenge in Biology
Replies: 18
Views: 7328

Re: Any SOLID arguments against evolution?

... on any random structure from this imbalance alone would cancel at least half of the possibilities. By polar bonds you are I believe referring to dipole-dipole bonds. Most amino acids are made of hydrogen bonds, with one end being acid H+ and the other basic OH-. This why they bond through dehydration ...

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by AFJ
Mon Jun 01, 2009 1:23 am
Forum: Evolution
Topic: Any SOLID arguments against evolution?
Replies: 309
Views: 544178

Polar or non-polar: Conflicting answers

... Well, polar and non-polar is indeed relative, so we can see the polarity of tyrosine and we can compare it with another non-polar compound by dipole moment comparison. If I'm not mistaken, the dipole moment of ether (a common non-polar compound) is about 1.4, so if tyrosine's dipole moment ...

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by victor
Thu Jan 24, 2008 3:17 am
Forum: Molecular Biology
Topic: Polar or non-polar: Conflicting answers
Replies: 7
Views: 25594
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