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Dictionary » P » Polarity

Polarity

Polarity

(Science: physics) Literally having poles (like a magnet), but used to describe cells that have one or more axes of symmetry.

(Science: cell biology) In epithelial cells, the polarity meant is between apical and baso lateral regions, in moving cells, having a distinct front and rear. Some cells seem to show multiple axes of polarity (which will hinder forward movement).


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DNA Extraction

dna is charged, check solubility and polarity

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by mith
Fri Jun 05, 2009 5:51 am
 
Forum: Cell Biology
Topic: DNA Extraction
Replies: 2
Views: 235

Re: tRNA and anti-sense

... a revised version of the actual book. which means its only certain chapters. so it goes from like ch 5-23. crazy. so when it asks to include the polarity, what is it asking. tell which end of the strand is 5 and which is 3?

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by seders99
Sun May 03, 2009 3:39 am
 
Forum: Molecular Biology
Topic: tRNA and anti-sense
Replies: 3
Views: 429

tRNA and anti-sense

... amino acid sequence, provide the tRNA molecules that were used for its translation and the anti-sense strand of the DNA. Be sure to include polarity of all items.... Ok I have the final products but am confused about the polarity part? What does that mean? It isn't talked about in my book. ...

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by seders99
Sat May 02, 2009 7:56 pm
 
Forum: Molecular Biology
Topic: tRNA and anti-sense
Replies: 3
Views: 429

Definition of amphipathic

Is this right? amphipathic: a molecule in which there is a difference in water solubility between one end and the other owing to differences in polarity.

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by Joker
Sun Apr 26, 2009 9:07 am
 
Forum: Cell Biology
Topic: Definition of amphipathic
Replies: 2
Views: 248

a bunch of semi simple questions

1. explain how polarity, density, and solvent properties make water a special molecule. 2. how does temperature effect enzyme activity and metabolic rate? 3. how does temperature effect the rate of diffusion 4. how does pH effect ...

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by heyimkatiegibson
Wed Mar 11, 2009 1:51 am
 
Forum: General Discussion
Topic: a bunch of semi simple questions
Replies: 2
Views: 463
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