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Symport

symport

(Science: cell biology, physiology) A mechanism of transport across a membrane in which two different molecules move in the same direction.

Often, one molecule can move up an electrochemical gradient because the movement of the other molecule is more favourable.

See: antiport, uniport, facilitated diffusion.


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Pls. I need help with my hw

... a type of which kind of transport? A) Primary active transport B) Secondary active transport using a uniport C) Secondary active transport using a symport D) Secondary active transport using a antiport The rate of facilitated diffusion of glucose through GLUT4 transported on skeletal muscle occurs ...

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by mslazy
Sat Oct 09, 2010 8:56 pm
 
Forum: Physiology
Topic: Pls. I need help with my hw
Replies: 1
Views: 11224

I am not sure about active transport mechanism

... you've described to have two phases. It uses a preexisting elecrochemical gradient of one substance to push other substance against its gradient (symport or antiport). For example, HCO3/Cl antiport, Na/Glc symport (intestine epithelium). The preexisting gradient is generated by primary transporter ...

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by druid
Sun Nov 05, 2006 6:12 pm
 
Forum: Cell Biology
Topic: I am not sure about active transport mechanism
Replies: 2
Views: 1947

I am not sure about active transport mechanism

... First is pumping H+ outwards by H+-ATPase. Second phase is retrieval of H+ connected with co-transport of our substance into or out of the cell (symport or antiport with H+). My question/doubt is whether that actively transported substance may be transported indyvidually (by means of ATP hydrolysis ...

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by SU_reptile
Sun Nov 05, 2006 10:58 am
 
Forum: Cell Biology
Topic: I am not sure about active transport mechanism
Replies: 2
Views: 1947

cell transport

... to the protein and enter the cell. They travel down the concentration gradient of NA, but glucose also enters the cell, by this mechanism called a symport. From the enterocyte the glucose molecule enters the bloodstream by facilitated diffusion, according to it's own concentration gradient. It ...

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by MrMistery
Thu Jan 19, 2006 7:55 pm
 
Forum: Cell Biology
Topic: cell transport
Replies: 9
Views: 3403

Sodium Potassium pump...

symport of Na-ions and glucose gives energy, because you go with the sodium gradient. another feature of this pump is to maintain the osmolarity of the inside of the cell.

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by sdekivit
Sun Oct 16, 2005 11:14 am
 
Forum: Cell Biology
Topic: Sodium Potassium pump...
Replies: 5
Views: 4937


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