cellemembranen – English Translation – Keybot Dictionary

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  3 Hits natfak.sdu.dk  
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. beskrive hvorledes forskellige klasser af membranbundne receptorer aktiveres og hvorledes signaler transduceres fra cellemembranen til nukleus
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. describe how different classes of membrane bound receptors are activated and how signals are transduced from the cell membrane to nucleus
  2 Hits www.au.dk  
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Danske Skou havde opdaget den pumpe, der skaber transporten af ioner gennem cellemembranen, og som er årsag til den spændingsforskel, der er hele forudsætningen for nerveimpulser og muskelkontraktioner.
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“I found out that sodium on its own slightly increased enzyme activity, and thus the rate of ATP splitting, and potassium had no effect at all, but a combination of sodium and potassium resulted in a considerable amount of enzyme activity.” Skou wondered whether the enzyme could have something to do with the interior of the membrane, which led to the nerve impulse, but soon realised that this could not be the case. On the contrary, the experiments implied that the enzyme could be involved in the transport of sodium out of the cell and potassium into the cell, a necessary process for maintaining a lower concentration within the cell than outside. In other words, his enzyme must be involved in the active transport of ions across the cell membrane and into the cell itself. The enzyme had to act as a kind of pump – hence the subsequent name “the sodium–potassium pump”.
  16 Hits mbg.au.dk  
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Ved at bestemme strukturen af en protonpumpe fra planter har forskerholdet kunnet forklare, hvorledes disse pumper kan danne en kraftig spænding over cellemembranen, typisk omkring ¼ Volt, hvilket lyder af lidt, men er en formidabel spænding på celleniveau.
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The proton pump plays the same role in plants and fungi as the sodium-potassium pump does in animals, i.e. as the cell's generator of tension and electricity. It is the energy source that plants use to absorb nutrients, and applies to a considerable number of control processes, such as opening and closing for access to air for photosynthesis. The proton pump is therefore vital for their survival.