Cell Transport Mechanisms Quiz

What is the natural direction of molecule movement in diffusion?

• Randomly in all directions

• In a circular motion

• From high to low concentration

• From low to high concentration

How can a cell maintain a high concentration of a molecule inside?

• By allowing more molecules to diffuse in

• By using active transport to pump molecules in

• By blocking all diffusion

• By increasing the cell size

What is required for active transport to occur?

• Sunlight

• ATP energy

• Water

• No energy is needed

Which analogy is used to explain active transport?

• Climbing a mountain

• Swimming against a river current

• Floating downstream in a river

• Walking on a treadmill

What is the main difference between active and passive transport?

• Passive transport requires energy, active does not

• Both require energy

• Neither requires energy

• Active transport requires energy, passive does not