What does Endocytosis do?

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What does Endocytosis do?

Post by BioSmarts » Sun Oct 09, 2005 7:55 pm

I am doing a project for my AP Bio class and i can't figure out what Endocytosis does.

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Post by Peter Mundy » Sun Oct 09, 2005 8:29 pm

The transport of larger matters into or out of the cell. During endocytosis the cell surrounds the material with a cell surface membrane, leading it into the cell within a vesicle. There are two types; pinocytosis, the intake and destruction (digestion) of fluid due. And, phagocytosis, the intake and destruction of solid particles.

I hope this helped, sorry that it is not very detailed. If you have the book "biology," - Boyle, M. and Senior, K. it is explained in more depth.

Peter

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Post by mith » Mon Oct 10, 2005 1:30 am

one small correction, endocytosis only brings stuff inside.
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Post by paperclip » Mon Oct 10, 2005 4:41 am

Do all mammalian cell cultures endocytose?

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Post by victor » Mon Oct 10, 2005 11:46 am

Likely :D
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Post by Peter Mundy » Mon Oct 10, 2005 12:53 pm

mithrilhack wrote:one small correction, endocytosis only brings stuff inside.


:lol: Oh yeh, exocytosis is material "ex"iting the cell.

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Post by BioSmarts » Tue Oct 11, 2005 1:44 am

alright then. thanx. um... just one more question...what is Diffusion really about?

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Post by Poison » Tue Oct 11, 2005 10:05 am

Movement of substances from a high concentrated place to a low concentrated place.
It is a passive transport that the cell does. .
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Post by BioSmarts » Tue Oct 18, 2005 12:56 am

ok thanx......

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Post by Peter Mundy » Wed Oct 19, 2005 6:55 pm

Diffusion is the random movement of molecules of liquds and gases from areas of high concentration, to areas of low concentration.

As Poisen said, it is passive transport; this requires no energy.

You should also rember to mention that it particles diffuses through the selectivly permeable membranes phospholipid bilayer.

(this is from memory, so you may want to check your textbook incase of errors)

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Post by MrMistery » Thu Oct 20, 2005 5:51 pm

Also note facilitated difussion, which is still passive, but in this mechanism ions pass through proteic ion channels. It is not so much influenced by heat. It has a saturation level. It is much faster than simple diffusion. We can act upon it with specific inhibitors...
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Post by BioSmarts » Thu Oct 20, 2005 11:49 pm

ok thank you.

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