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Force pump

Force pump

(Science: machinery) a pump having a solid piston, or plunger, for drawing and forcing a liquid, as water, through the valves; in distinction from a pump having a bucket, or valved piston.

a pump adapted for delivering water at a considerable height above the pump, or under a considerable pressure; in distinction from one which lifts the water only to the top of the pump or delivers it through a spout.


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ETC - purpose of having different dehydrogenases?

... between the two is the fact that NDH-1 is a coupling site (so pumps out protons while transferring electrons) while NDH-2 is not; will ... of NADH and quinol. -- White, 2003. Also, (delta)p = proton motive force. I'm just a bit confused...I thought e's were just being passed from ...

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by keetner
Sat Dec 15, 2012 2:28 am
 
Forum: Molecular Biology
Topic: ETC - purpose of having different dehydrogenases?
Replies: 1
Views: 2267

Ion uptake in freshwater teleosts?

... also that the membrane of the body have powerful sodium-potassium pump that continualy pumps sodium ions to the outside and potassium ions ... ions must diffuse through this surface layer. Thus this electromotive force is no longer proportional to the hydrogen ion concentracion because ...

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by anastasianikifor
Thu Aug 26, 2010 9:15 am
 
Forum: Physiology
Topic: Ion uptake in freshwater teleosts?
Replies: 2
Views: 6187

aerobic and anaerobic glucose degeneration in a cell

... electrons to ETC Complex 1 and 2. Complex 1 uses the electrons to pump hydrogen ions (protons) across the cristae membrane creating a proton ... utilizes this energy is called ATP Synthase and uses the proton motive force to drive the production of ATP, analagous to hydroelectric turbine ...

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by Jesse2504
Tue Jun 23, 2009 3:43 am
 
Forum: Cell Biology
Topic: aerobic and anaerobic glucose degeneration in a cell
Replies: 2
Views: 15605

Transpiration Please help Me

... use purely evapotranspiration(and meniscus to an extent) as a suction force to carry water only(with dissolved ions) and as a result can only move ... towards the leaves. Pheolem cells on the other hand are alive and can pump sap in either direction, they use active transport to achieve this, ...

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by futurezoologist
Sun May 31, 2009 11:27 am
 
Forum: Botany Discussion
Topic: Transpiration Please help Me
Replies: 29
Views: 27560

Transpiration Please help Me

Well ascent of sap is due to suction force which is due to transpiration. transpiration is an active process, because cells need to constantly pump ions (actively) into stomata guard cells to keep stomata open. Thus, if you really want to stretch ...

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by MrMistery
Sun May 03, 2009 3:14 am
 
Forum: Botany Discussion
Topic: Transpiration Please help Me
Replies: 29
Views: 27560
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