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Cell Membrane, Active Transport

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Uploaded by on Dec 8, 2007

Cell Membrane, Active Transport

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Education

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  • To be people down there talking about ATPase...ATPase is a class of enzymes that break down ATP into ADP and a phosphate. The energy that is released from this drives other chemicals reactions, such as the one we just saw.

  • Na = Sodium

    K = Potassium

    ATPase = ATP

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  • 240p is Full HD in Africa

  • @Rosenberg130n ATPase is a enzyme that brakes ATP into ADP leavin the lonely phosphate

  • sent here by jimmy?

  • okay so, once ATP has turned to ADP, it basically did it's job for the sodium to move from a high concentration to a low concentration. so that part is active transport.

  • @xTPTxOCELOT and/or uneducated

  • Iwant to telecharge the védéo! how?

  • I could be wrong but the initial phosphate release is from ATP and that ATP molecule becomes ADP. That phosphate it then free to rebond with ADP to make ATP. With the protien don't forget that enzymes won't work until they bind with a co-factor (often a vitamin or a mineral) - like a lock and key effect. You wouldn't really want that protein to be 'open' all the time as things would leak freely in and out and that would be detrimental to the cell.

  • When the potassium enters the cell and "the phosphate is released", what the heck happened to the phosphate? Also, why does a simple phosphate change the shape of the protein to begin with? Is this like asking why is water wet or whether the chicken or the egg came first?

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