4 2 Active Transport
10
Using Energy to Move Substances
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Transcript of 4 2 Active Transport
Using Energy to Move Substances
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?
What can stop
this?
Na-K Pump
K IonsNa Ions
Pumps 3 Pumps 2
OUTOUT of cell INTOINTO cell
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)