Active Transport

in passive transport, simple diffusion and facilitated deffusion, move particles ___________.

• low to high consentration

• high to low concetration

• up the concentration gradiant

• down the concentration gradiant

in facilitated diffusion _______ ________ act like a bridge or tunnel accross the membrane to allow larger molecules into the cell.

(a)  

Active Transport moves molecules (a)   the concentration gradient

(a)   is required to move molecules up the concentration gradient

when the cell uses energy to wrap a section the cell membrane around a molecule to bring it inside is _______

• Endocytosis

• Exocytosis

The process that a cell uses to remove a molecule from the cell using the cell membrane is __________

• Endocytosis

• Exocytosis