Cell Membrane Vocabulary

This is the process of engulfing (eating) the large particles

Exocytosis

Endocytosis & Exocytosis

The movement of materials across a cell membrane using energy. *After sledding down the hill, you need energy to now walk back up it*

Diffusion, Osmosis, Facilitated Diffusion

Some substances can cross the membrane while others cannot. AKA Staff with badges

It controls which substances pass in and out of the cell. AKA "Security Guard"

Endocytosis

The diffusion of water molecules across a selectively permeable membrane. *Think of water*

The movement of materials across the membrane without using energy. *Sledding downhill requires no energy*

The movement of substances across the membrane with the assistance of special transport proteins. *Someone famous needing an escort to go places*

Endocytosis

Osmosis

When molecules move from an area of high concentration to an area of low concentration. *When you spray a bottle of perfume*

Diffusion

Active & Passive Transport

This is what allows large particles to exit the cell.

Passive Transport

Exocytosis

Active Transport