Exploring Diffusion and Osmosis Concepts

The video tutorial covers the processes of diffusion and osmosis, explaining how they help maintain homeostasis in cells. Diffusion involves molecules moving from high to low concentration, while osmosis specifically refers to water molecules. The video also discusses the effects of different solute concentrations on cells, such as isotonic, hypertonic, and hypotonic conditions, and the potential consequences for cell structure and function.

What is the main goal of diffusion and osmosis in cells?

• To create energy

• To destroy harmful substances

• To maintain homeostasis

• To increase cell size

How do molecules move during diffusion?

• Only within the cell

• From high concentration to low concentration

• From low concentration to high concentration

• Randomly without any pattern

What is the term for the difference in concentration of a substance across space?

• Permeability

• Equilibrium

• Concentration gradient

• Osmosis

What happens to the movement of molecules once equilibrium is established?

• Molecules move to one side

• Molecules are destroyed

• Movement continues randomly

• Movement stops completely

In the respiratory system, where does oxygen diffuse from and to?

• From the blood to the lungs

• From the lungs to the blood

• From the heart to the lungs

• From the lungs to the heart

What is osmosis specifically the diffusion of?

• Water molecules

• Carbon dioxide molecules

• Nutrient molecules

• Oxygen molecules

What happens to water movement in a hypotonic solution?

• Water moves into the cell

• Water moves equally in and out

• Water moves out of the cell

• Water does not move

What is the term for the process where a cell bursts due to too much water intake?

• Plasmolysis

• Cytolysis

• Equilibrium

• Homeostasis

What is the effect on a cell in a hypertonic solution?

• The cell grows larger

• The cell bursts

• The cell shrivels

• The cell remains the same

What does 'isotonic' mean in terms of solute concentration?

• Higher solute concentration outside the cell

• No solute concentration

• Lower solute concentration outside the cell

• Equal solute concentration inside and outside the cell