Understanding Cell Behavior in Different Salt Water Solutions

The video tutorial explains the differences between hypertonic, hypotonic, and isotonic solutions, focusing on their effects on cells. It describes how water moves across cell membranes through osmosis, influenced by solute concentration. The tutorial also covers molecular interactions between water and ions, explaining how these interactions affect cell size and stability. Key processes like plasmolysis and cytolysis are discussed, providing a comprehensive understanding of how different solutions impact cells.

What is the main characteristic of an isotonic solution?

• Lower solute concentration outside the cell

• No solute concentration outside the cell

• Higher solute concentration outside the cell

• Equal solute concentration inside and outside the cell

In a hypertonic solution, what happens to the cell?

• It bursts

• It swells

• It shrivels

• It remains the same

What is the net movement of water in an isotonic solution?

• No net movement of water

• Water moves into the cell

• Water moves randomly

• Water moves out of the cell

What is the effect of placing a cell in a hypotonic solution?

• The cell remains unchanged

• The cell shrivels

• The cell becomes isotonic

• The cell swells and may burst

What is the process called when a cell bursts due to excess water intake?

• Diffusion

• Osmosis

• Cytolysis

• Plasmolysis

How does water interact with sodium ions?

• Water molecules ignore sodium ions

• Water molecules surround sodium ions

• Water molecules are destroyed by sodium ions

• Water repels sodium ions

What charge does the oxygen part of a water molecule have?

• Variable

• Neutral

• Negative

• Positive

What is the term for the attraction between water molecules and ions?

• Diffusion

• Osmosis

• Hydration

• Evaporation

What happens to water concentration when solute concentration is high?

• Water concentration increases

• Water concentration decreases

• Water concentration remains the same

• Water concentration becomes zero

What is the role of aquaporins in a cell membrane?

• They prevent osmosis

• They allow water to flow in and out

• They block water flow

• They transport ions