Dictionary » A » Antiport

Antiport

A mechanism for the coupled transport of two different molecules
     or ions through a membrane in opposite directions.

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Hydrochloric acid (HCL) in the stomach..

... 0.1M. The secreted -protons, which are derived from the intracellular hydration of CO2 by carbonic anhydrase, are pumped out by an (H+ k+) ATPase antiport transporter is also required to complete the overall transport system. a) Calculate the pH of the secreted HCL. How does this compare to the ...

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by TwinkleK
Fri Feb 10, 2012 12:58 pm
 
Forum: Molecular Biology
Topic: Hydrochloric acid (HCL) in the stomach..
Replies: 9
Views: 4306

Pls. I need help with my hw

... 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 fast EXCEPT? A) When insulin is available ...

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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: 11171

I am not sure about active transport mechanism

... 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 ( 1st ...

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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: 1920

I am not sure about active transport mechanism

... 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 of course) ...

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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: 1920

hydrochloric acid

... HCO3- + H+ H+ is excreted into the lumen through a pump identical to the one plants use to create H+ gradients Now, Cl- enters the cell through an antiport with HCO3-, so the cell solves 2 problems: gets rid of HCO3- and gets the Cl- inside the cell. Then Cl- is excreted into the lumen through ...

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by MrMistery
Wed Nov 23, 2005 6:39 pm
 
Forum: Physiology
Topic: hydrochloric acid
Replies: 13
Views: 8475
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