Active and Passive Transport

Diagram shows the movement of molecule M across the plasma membrane through process X. What is process X?

• simple diffusion

• facilitated diffusion

• osmosis

• active transport

The following statements are true about passive transport EXCEPT

• Energy is not required

• Occurs against the concentration of the gradient

• Occurs until a dynamic equilibrium is achieved

• Occurs following the concentration of the gradient

What does semi-permeable mean?

• Some molecules can move through the membrane

• Nothing can move through the membrane

• All molecules can pass through the membrane.

Which type of transport requires an input of energy?

• Passive Transport
• Osmosis
• Simple Diffusion
• Active Transport

Movement of molecules through the cell membrane from high to low concentration

• passive transport

• active transport

Active transport moves substances against a concentration gradient 

• true
• false 

Materials that can move across a membrane with passive transport include

• water, oxygen, and carbon dioxide
• starch and other polysaccharides
• DNA and RNA
• large proteins

In a "high concentration," molecules

• are spread out

• are tightly packed together

• are uncrowded

• are unevenly dispersed

Which of the following is not a type of passive transport?

• Osmosis
• Diffusion
• Endocytosis
• Facilitated Diffusion

What type of transport is this?

• Diffusion
• Osmosis
• Facilitated Diffusion
• Active Transport