Cell Structure and Function

What is facilitated diffusion?

• Requires ATP
• Involves endocytosis
• Uses pumps
• Passive transport using carrier proteins

What is active transport?

• Passive movement of water
• Random diffusion
• Simple filtration
• Movement of molecules against concentration gradient

What is osmosis?

• Active transport of ions
• Gas exchange
• Light absorption
• Diffusion of water across a membrane

What is the plasma membrane made of?

• Single layer of fat
• Pure water
• Solid crystal
• Phospholipid bilayer with embedded proteins

What is chromatin?

• Cell membrane component
• Energy molecule
• Waste product
• Uncoiled DNA-protein complex