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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Aquatic life in the polar regions

During winter in polar regions there is a thick sheet of ice above the water bodies. How the water below ice get oxygenated to sustain aquatic life.

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by josem
Sun Aug 24, 2014 8:29 pm
 
Forum: Ecology
Topic: Aquatic life in the polar regions
Replies: 2
Views: 276

Re: Are predators always smarter than their prey?

... matter of which is more intelligent, the knowledge each have is learned by experience and some prey and predator coevolve such as Ringed Seals and Polar Bears. Also, usually when the predator(s) hunt it seeks out the weakest or slowest: young, old, sick .

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by Gannet
Sat Feb 22, 2014 2:46 pm
 
Forum: Zoology Discussion
Topic: Are predators always smarter than their prey?
Replies: 14
Views: 8716

Are carbohydrates hydrophobic?

Yeah, right, oxygen O2 contains 100% oxygen, is it polar? Carbon dioxide contains also high percentage of oxygen (66% by moles, 72% by weight), is it polar?

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by JackBean
Fri Aug 30, 2013 8:17 am
 
Forum: Molecular Biology
Topic: Are carbohydrates hydrophobic?
Replies: 7
Views: 14618

Re: Are carbohydrates hydrophobic?

Carbohydrates are Hydrophilic. They have large amounts of oxygen and therefore, polar molecules, according to “Carbohydrates (1)”. Polar means that the molecules have "dipoles". This is due to the unbalanced charge of electrons in either part of the molecule. ...

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by HectorEnriquezC
Fri Aug 30, 2013 1:36 am
 
Forum: Molecular Biology
Topic: Are carbohydrates hydrophobic?
Replies: 7
Views: 14618

Bear vs Gorilla Stand-Off. Who would win?

Really people? I honestly don't see how anyone is giving the gorilla a chance at all. And you really think that a gorilla is stronger than a POLAR BEAR? The bear would have 300-500 lbs on the gorilla easy. Here's a well explained answer to this question I found elsewhere, and this is for a gorilla ...

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by darrellacoustic
Sat Jun 29, 2013 10:12 pm
 
Forum: Zoology Discussion
Topic: Bear vs Gorilla Stand-Off. Who would win?
Replies: 10
Views: 19365
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