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ACTIVE TRANSPORT
- no this all wrong!!!!!!!!!!!!User:Skittleys|Skittleys]] 03:29, 12 August 2006 (UTC)
- Just because its in high school text books doesn't mean we shouldn't cite sources. Stable attractor 10:07, 10 November 2007 (UTC)
Not sure how to put it but perhaps a why section, where in biology is this actually useful/used? arrived at this page from Bladderwort
- Never edited this before, but it is useful for root hair cells to take in minerals and it allows nutrients to be taken into the gut against the concentration gradient. 80.47.221.11 15:33, 26 May 2007 (UTC)
- Great! What is the source of this information? Stable attractor 09:50, 10 November 2007 (UTC)
it is vital to the nervous system of all animals. this is probably talked about in the neuron article (etc): neurons require a resting membrane potential of about -70mV which is largely established by active transport of K+ and Na+ across the membrane. every 3 Na+ exported out is replaced by 2 K+ imported. this imbalance causes the negative membrane potential. This potential causes a fast influx of Na+ (due to ELECTRIC and chemcial potentials) when the Na+ channels (passive) are opened by a stimulus. This can cause depolarisations (i.e. a neuron firing).
active transport is also used in the kidneys to regain most of the materials lost in the filtrate so it is not lost in the urine (e.g. glucose is taken up by secondary active transport, at a rate of nearly 100% except in diabetics).
- Anyone ever thought of adding types of active transport??
- I just added a section on different types of active-transport proteins. Is that what you are referring to? Stable attractor 10:05, 10 November 2007 (UTC)
You could write in a little about primary active and secondary active transport: primary active transport uses the energy in ATP to move stuff, secondary active transport uses electrochemical differences and coupling I think. There are already seperate articles for these, but a mention and link in this article would be nice.
- The "Relation to Cellular Energy" section doesn't make any sense to me. Stable attractor 06:41, 8 November 2007 (UTC)
- Just deleted that small section. If you want it back, feel free to post a complaint. Stable attractor 10:05, 10 November 2007 (UTC)
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- This page was last modified on 19 March 2008, at 06:58.
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