Exploring Cell Transport Mechanisms

The video tutorial explains cell transport, focusing on passive and active transport. Passive transport, including diffusion and osmosis, moves substances from high to low concentration without energy. Active transport requires energy to move substances from low to high concentration. The video includes examples and practice problems, highlighting osmosis in various scenarios, including a real-world example of a freshwater plant in saltwater.

What does passive transport not require?

• Salt

• Proteins

• Water

• ATP

What is the movement of particles from high to low concentration called?

• Facilitated diffusion

• Active transport

• Diffusion

• Osmosis

What helps in facilitated diffusion?

• Water

• ATP

• Helper protein

• Energy

What does osmosis specifically involve the movement of?

• Proteins

• Salt

• Sugar

• Water

What is required for active transport?

• Water

• ATP

• Low concentration

• High concentration

In a U-tube experiment, if side A has a low concentration of salt, where does the water move?

• From B to A

• From A to B

• Water does not move

• Equally in both directions

What happens to a cell in a hypotonic solution?

• It divides

• It stays the same

• It bursts

• It shrinks

What happens to a cell in a hypertonic solution?

• It swells

• It shrinks

• It divides

• It bursts

If the cell and environment have the same salt concentration, what happens to the cell size?

• It stays the same

• It fluctuates

• It decreases

• It increases

What happens to a freshwater plant in saltwater?

• It floats

• It grows

• It blooms

• It shrivels