Active Transport

Chemical energy is required for active transport to establish a specific concentration gradient. In a sodium potassium-pump, chemical energy specifically serves to help the pump

• Bind to the potassium ions
• Allow passive diffusion
• All of these
• Change the shape
• Create a symport

This type of integral membrane protein moves two substances in the same direction

• Symport
• Antiport
• Triport
• Uniport
• Carrier

Why does active transport require energy?

• To move solutes against a concentration gradient
• To move solutes with a concentration gradient
• To diffuse substances passively
• To move solutes to an equal concentration inside and outside the cell
• To transport small, hydrophobic molecules across the membrane

A sodium potassium pump is a type of...

• Passive transport
• Uniport
• Triport
• Symport
• Antiport

Active transport involves

• The movement of water
• Chemical energy
• Simple diffusion
• Movement with a concentration gradient
• Sodium ions