Talk:Active transport

message: I'm not sure if I understand why F-ATPases (ATP synthases) are active transporters. Here they are listed as number 2 in the "Types of primary active transporters". Active transporters are by definition proteins that create a gradient by using ATP. ATP synthases do the exact opposite, they synthesize ATP by using a gradient. I'm not an expert on this topic, maybe I'm missing something. Also, this is the first time I'm in Wikipedias "Talk" section. I think I'm doing it wrong.  — Preceding unsigned comment added by ScienceEel (talk • contribs) 21:34, 20 June 2020 (UTC)
thread_title: F-ATPase

message: ACTIVE TRANSPORT
* no this all wrong!!!!!!!!!!!!User:Skittleys|Skittleys]] 03:29, 12 August 2006 (UTC)
thread_title: Untitled

message: I can't find any reference to it, but the sodium pump should really be an example of a ABC-transporter. Does anyone know?--Gak (talk) 15:17, 13 November 2008 (UTC)
thread_title: ABC transporter

message: The lipid rafts supporting active transports and other transmembrane activities have cholesterol present almosts 1:1 with sphyngomyelin lipids.  Why do text books keep ignoring the huge importance of cholesterol mediation in this area? It is a relatively new paradigm shift in lipid rafts (12 years old) but incredibly important to today's students surely!Glynwiki (talk) 07:09, 22 June 2009 (UTC)
thread_title: Cholesterol-rich lipid membranes

message: Currently there are no references. Earlier versions such as have had references. I'm not sure if they were removed for legitimate reasons or not. —dv82matt 06:04, 10 January 2010 (UTC)
thread_title:  References needed 

message: I think there is a mistake in the article, here I write, why I think it is a mistake. 
Diffusion, which is a form of passive transport, works against the concentration gradient, because gradient of the concentration points in the direction from lower concentrations to higher concentrations. (See a definition of the gradient.) Diffusion moves particles from areas with higher concentrations to lower concentrations, therefore it moves particles against the concentration gradient. Therefore, active transposrt, unlike the passive pransport, moves the particles in the direction of the concentration gradient, not against it. Or is there some different definition of gradient, which is used in biology?
--Irigi (talk) 14:05, 10 February 2010 (UTC)
thread_title:  "Against concentration gradient" 

message: This page Primary active transport, Secondary active transport and Co-transport are all small pages covering smiler content that are sub categories of Active transport.  — Preceding unsigned comment added by Jasoninkid (talk • contribs) 01:50, 17 September 2011 (UTC)
thread_title: Merger proposal

message: I have edited the introduction, because previously it said that passive transport does not use any kind of energy. This is not true. Passive transport relies on the kinetic energy of the substance that is being transported. This kinetic energy is what causes it to move around and (by random chance) cross the membrane. The difference is that active transport actually uses the cell's energy (ATP or electrochemical gradient) to pump the substance across the membrane. Famedog (talk) 10:15, 1 November 2012 (UTC)
thread_title:  Energy  

message: I query the utility of the term "secondary active transport" as a description of cotransport. It seems to me that there is a clear distinction between active transport where the energy comes from the immediate hydrolysis of ATP and which stops the moment you poison the pump, and passive transport where the energy comes from an electrochemical gradient, and which will persist after poisoning the pump until the gradient runs down. If we start talking about secondary active transport then we muddy the water fairly comprehensively. Very many  biological gradients ultimately require metabolic energy for their maintenance, and in so far as that is the case, transport systems using these gradients become "secondary active transport" and passive transport dissappears from the scene.
As an obvious example, the Na and K flow during a nerve impulse depends on the gradient established by the Na/K ATPase (classic active transport), but as far as I know nobody ever describes the action potential as a "secondary active transport" process. In fact most neuroscience teachers rather strongly emphasise that the ion flow is indeed a passive process.
I'd like to canvas opinion on this topic rather than diving in and editing directly. Any thoughts?
Wjheitler (talk) 10:49, 27 November 2013 (UTC)
thread_title:  Is cotransport active transport at all? 

message: Substituted at 06:38, 29 April 2016 (UTC)
thread_title: Assessment comment

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thread_title:  External links modified 

message: Now that there is enough written for primary and secondary transport (which should rather be named cotransport or electrochemical potential-driven transport), can we split these two concepts again? They are completely different. --SCIdude (talk) 13:58, 4 September 2019 (UTC)
thread_title:  Split 

message: What are the role of active transport 197.156.190.205 (talk) 03:15, 22 November 2021 (UTC)
thread_title:  Biology 

message: please Paraglid (talk) 11:05, 27 December 2021 (UTC)
thread_title:  Please anyone paste the pictures of some active transport 

message: — Assignment last updated by Dosunodos212 (talk) 23:43, 15 May 2023 (UTC)
thread_title: Wiki Education assignment: CHEM 378 - Biochemistry Lab - spring 2023