Dictionary » P » Polar

Polar

Definition

adjective

(general) Of, or having one or more poles (in a spherical body); being in opposite extremes.

(chemistry) Pertaining to a compound exhibiting polarity or dipole moment, that is a compound bearing a partial positive charge on one side and a partial negative charge on the other.

(mathematics) Of a coordinate system, specifying the location of a point in a plane by using a radius and an angle.

(pathology) Characterized by having opposite ends of a spectrum of symptoms or manifestations, as in polar types of leprosy


Supplement

Sugar, such as sucrose, is an example of polar molecule. Its structure has oxygen-hydrogen (-OH) groups.

Water is also a polar molecule for having both negative and positive poles.


Word origin: from Late Latin polāris.

Related forms: polarity (noun).
Related terms:

Compare: nonpolar.
See also: polar solvents.


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Brown bears and polar bears, can they mate?

id assume it was possible as there has been evidence of grizzly bears mating with polar bears creating a hybrid. Here are some showing this hybridization. http://www.newscientist.com/article/mg21528754.600-hardy-polar-bears-have-survived-past-global-warming.html ...

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by marineman
Mon Feb 25, 2013 6:54 pm
 
Forum: Zoology Discussion
Topic: Brown bears and polar bears, can they mate?
Replies: 1
Views: 297

Brown bears and polar bears, can they mate?

... my friend are doing some research about the brown bear here in Sweden. So I was wondering: Is it possible for a swedish brown bear to mate with a polar bear? Or are these two spieces too different from each other?

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by twenty2
Mon Jan 21, 2013 7:10 pm
 
Forum: Zoology Discussion
Topic: Brown bears and polar bears, can they mate?
Replies: 1
Views: 297

Re: Markerless mutants using suicide vector

... bacteria.. once (it couldn't be reproduced!). However, our linear KO DNA also contain an antibiotic cassette that we suspect may introduce some polar effect on downstream genes, so we are trying to avoid that route. If we try to, for example, use linear DNA without some selectable marker, we'll ...

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by dhkwak1
Wed Dec 19, 2012 1:04 am
 
Forum: Genetics
Topic: Markerless mutants using suicide vector
Replies: 2
Views: 531

Bear vs Gorilla Stand-Off. Who would win?

... smokin crack, I couldn't think of anything more dangerous :) seriously though, obviously there are a lot of factors to take into consideration. A polar bear would have a slight advantage to puncture wounds seeing it has a thick coat and heavy layers of fat, on the other hand a silver back gorilla ...

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by vk4vfx
Fri Sep 28, 2012 10:10 am
 
Forum: Zoology Discussion
Topic: Bear vs Gorilla Stand-Off. Who would win?
Replies: 5
Views: 2885

Re: Bear vs Gorilla Stand-Off. Who would win?

I think the gorilla would "win", due to their agility and superior upper body strength. They are also more intelligent than polar bears.

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by hymenoptera7
Wed Sep 19, 2012 3:51 am
 
Forum: Zoology Discussion
Topic: Bear vs Gorilla Stand-Off. Who would win?
Replies: 5
Views: 2885
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