Cell Membranes & Cell Transport (In Da Club - Membranes & Transport: Crash Course Biology #5)

Cells have to be selectively permeable because they:

• Both A, B & C

• need to keep organelles inside of the membrane

• have to let in the nutrients need

• let out waste

What is passive transport?

• the movement of molecules that doesn't require energy

• the movement of molecules from a long time ago past the cell membrane

• the slow transport of molecules

What do you call the movement of water across a cell membrane?

• Osmosis

• Active Transport

• Diffusion

• Passive Transport