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Molecules move ______ the _________.
against, concentration gradient
Molecules move from ______ to ______ concentration
low, high
What happens with equilibrium?
It is never reached, it is being worked against
Active transport requires (2 things)
A protein, energy
Sodium-potassium pump
used in nerve function and muscle cell contractions
Election transport chait
used in photosynthesis and cellular respirationen
Endocytosis
brings materials into a cell
Exocytosis
removal of materials from the cell