Active and Passive Transport

Osmosis is the movement of _____ across a membrane.

• food
• energy
• oxygen
• water

Passive transport requires no

• concentration gradients
• osmosis
• motion
• energy

What is diffusion?

• when molecules move 
• when molecules move from a high concentration to a low.
• no movement 
• molecules move everywhere

Which type of transport requires an input of energy?

• Passive Transport
• Osmosis
• Simple Diffusion
• Active Transport

The diffusion of water across a membrane is called

• equilibrium.
• osmosis.
• facilitated diffusion.
• active transport.

Someone sprays air freshener.  The scent fills the room.  This is an example of

• active transport
• osmosis
• diffusion
• cellular respiration

Which transport does not require energy?

• Passive
• Active 

Which of the following is a job of the cell membrane?

• Regulates which materials enter and leave the cell.
• Breaks apart lipids, carbohydrates, and proteins from foods.
• Stores water, salt, proteins, and carbohydrates.
• Keeps the cell wall in place.

Movement of particles from high to low concentration. 

• Passive Transport
• Active Transport

Osmosis is a form of ______________. 

• Passive Transport
• Active Transport