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Dictionary » P » Polar cell

Polar cell

Definition

noun, plural: polar cells

The cell that results from the asymmetric division of an oocyte.


Supplement

In animals and humans, polar bodies are produced every after meiotic division. They are relatively smaller in size due to less cytoplasm compared to the gametocyte that will become the ovum. This is essential so that much of the cytoplasm is available and the chromosomal content is halved at the time of fertilization. The polar bodies will eventually degenerate.


Also called: polar body


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Carbohydrate diffusion through cell membrane

... on to the blood stream. But how is that possible without some sort of membrane protein like the kind H2O uses? Carbohydrates are generally very polar molecules. And why can monosaccharides do it, but not disaccharides and polysaccharides? Thank you.

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by micron66
Tue Sep 22, 2009 6:07 pm
 
Forum: Molecular Biology
Topic: Carbohydrate diffusion through cell membrane
Replies: 1
Views: 83

Re: Any SOLID arguments against evolution?

... you think it is much more than it is, you haven't taken into account polar bonds(of which there are a lot in hemoglobin due to H, N, O), the stress ... on this, all I can say is Dr. Menton who made the quote is a PhD in cell biology. There have been articles on the odds of evolution happening, ...

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by AFJ
Mon Jun 01, 2009 1:23 am
 
Forum: Evolution
Topic: Any SOLID arguments against evolution?
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Experiment: Can Electromagnetic....

... Sperm motility and regularity can be damaged by electromagnetic fields (cell phones) http://www.cnn.com/2008/HEALTH/conditions/09/18/cellphone.sperm/ ... from the cell phone acts as sort of a "microwave". Any polar molecule will "wiggle" or try to align with magnetic fields. ...

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by seta37
Fri Apr 24, 2009 4:10 pm
 
Forum: Cell Biology
Topic: Experiment: Can Electromagnetic....
Replies: 7
Views: 874

Re:

... for the descendant design to have come from. The behavior of the cell itself produces self-organization into a functional emergent multicellular ... In the very beginning before there was life, molecular forces (bonding, polar) were already self-assembling large quantities of simple cell membranes ...

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by GaryGaulin
Sat Apr 11, 2009 1:58 am
 
Forum: General Discussion
Topic: Intelligent Design?
Replies: 27
Views: 2670

Cell Membranes

... First of all, the only "holes" that are present in the cell membrane are ion channels, which have a tiny hydrophilic channel in the center that only allows the passage of a particular ion. Other polar molecules pass through other passage proteins (pumps/permeases). Macromolecules ...

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by MrMistery
Wed Jan 14, 2009 2:27 am
 
Forum: Cell Biology
Topic: Cell Membranes
Replies: 6
Views: 1167
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