4 2 active transport
DESCRIPTION
TRANSCRIPT
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Using Energy to Move Substances
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Uses ATP (ENERGY!!!) Moves substances from low to high
concentration Carrier proteins in cell membrane
“PUMP” things in & out (AA’s, Ions, Sugar) Many of these important substances have
a lower concentration outside the cell, so what would typically happen to them?
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What can stop
this?
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Na-K Pump
K IonsNa Ions
Pumps 3 Pumps 2
OUTOUT of cell INTOINTO cell
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Prevents Na build-up in cell (toxic) Enter on their own via facilitated
diffusion Makes cell hypertonic Cell would gain water & lyse
Helps Glucose enter cell (Coupled Channel)
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