Cell Transport and Solutions Effects

The video explains cell transport, focusing on osmosis and the movement of water across cell membranes. It covers isotonic, hypotonic, and hypertonic solutions, detailing how water concentration affects cell size and mass. Isotonic solutions maintain balance, hypotonic solutions cause cells to swell, and hypertonic solutions lead to cell shrinkage. Examples illustrate these concepts, emphasizing the movement of water from high to low concentration areas.

What is the primary function of cell transport?

• To create new cells

• To divide the cell into two

• To produce energy for the cell

• To move particles across the cell membrane

In an isotonic solution, what happens to the water movement across the cell membrane?

• Water moves equally in both directions

• Water moves only out of the cell

• Water moves only into the cell

• Water does not move at all

What is the water concentration inside a cell in an isotonic solution if the outside concentration is 75%?

• 100%

• 75%

• 25%

• 50%

What is the effect of a hypotonic solution on a cell?

• The cell shrinks

• The cell swells

• The cell remains the same size

• The cell divides

Why does a cell swell in a hypotonic solution?

• Because salt moves out of the cell

• Because water moves into the cell

• Because salt moves into the cell

• Because water moves out of the cell

What happens to the mass of a cell in a hypotonic solution?

• It disappears

• It increases

• It decreases

• It remains the same

In a hypertonic solution, what happens to the cell?

• The cell shrinks

• The cell bursts

• The cell remains the same size

• The cell swells

What causes a cell to shrink in a hypertonic solution?

• Salt moves into the cell

• Salt moves out of the cell

• Water moves out of the cell

• Water moves into the cell

In a hypertonic solution, where is the water concentration higher?

• Inside the cell

• Outside the cell

• There is no water

• Equal inside and outside

Which solution type causes no change in cell size?

• None of the above

• Isotonic

• Hypertonic

• Hypotonic