Active Transport

Active Transport

Moving substances from low to high!

Multiple Choice

How does active transport differ from passive transport?

• Uses energy

• Does NOT use energy

There are two substances get into cells:

• Passive Transport; does NOT require energy

• Active Transport: DOES require energy

Multiple Choice

Passive transport may or may not use a protein.

• True

• False

Types of Passive Transport include

• Simple Diffusion

• Facilitated Diffusion

• Selective Diffsuion

• Osmosis

• This type of transport moves substances from high concentration to low concentration

Multiple Choice

Active transport requires some form of

• water

• time

• energy

• pH

Active Transport

• Use energy

• Moves molecules from low concentration to high concentration

• Helps cells keep "stockpiles" of materials

• 
  

• 
  

Examples of Active Transport Include:

• Calcium Pump

• Sodium-Potassium Pump

• Secondary Active Transport

• Endocytosis; Phagocytosis, Pinocytosis

• Exocytosis

The Calcium Pump:

• Helps muscles contract

• Keeps high concentrations of Ca in the cell

• Uses ATP to change the shape of the transport protein to move the ion

• 
  

• 
  

The Sodium-Potassium Pump:

• Moves Na+ out

• Moves K + in

• Called an anti-porter

• Uses ATP

• How your nervous system works

Secondary Active Transport

• Does NOT use ATP as the energy source

• Glucose enters at the same time as sodium

• Called a symporter

Endocytosis:

• Cell shifts the cell membrane in order to bring substances INTO the cell

• Pinocytosis-cell drinking

• Phagocytosis-cell-eating

• Uses a lot of energy and is NOT always safe

Exocytosis

• Cells shift the cell membrane to get rid of substances from the cell

• Uses a lot of energy

• 
  

• 
  

Multiple Choice

A form of active energy that does not ATP as the energy source

• Ca Pump

• Na/K pump

• Secondary Active Transport

Multiple Choice

Moves molecules from low to high.

• Active Transport

• Passive Transport

Multiple Choice

Active transport moves molecules from high to low concentration

• True

• False

Multiple Choice

Cell drinking is called

• phagocytosis

• exocytosis

• pinocytosis