Exploring Diffusion and Osmosis Concepts

The video tutorial explains the movement of particles across membranes, focusing on diffusion and osmosis. Diffusion involves particles moving from high to low concentration until equilibrium is reached. Osmosis, a type of diffusion, specifically involves water moving across membranes. The video also covers practical examples, such as the effects of osmosis on cells in different solutions, and explains concepts like turgor pressure in plant cells.

What is the primary direction of particle movement in diffusion?

• From high concentration to low concentration

• From high pressure to low pressure

• From low pressure to high pressure

• From low concentration to high concentration

What term describes the state when concentrations are equal on both sides of a membrane?

• Static equilibrium

• Dynamic equilibrium

• Concentration gradient

• Osmotic balance

Which type of molecules can easily pass through the plasma membrane by diffusion?

• Small non-polar molecules

• Large polar molecules

• Large charged molecules

• Small polar molecules

What is the core of the plasma membrane primarily composed of?

• Carbohydrates

• Hydrophilic heads

• Hydrophobic lipid tails

• Proteins

In osmosis, water moves towards which type of solution?

• The least concentrated solution

• The most concentrated solution

• The solution with the highest pH

• The solution with the lowest pH

What happens to the concentration of a solution when more solvent is added?

• It decreases

• It increases

• It remains the same

• It becomes saturated

What is the process of adding water to a solution to decrease its concentration called?

• Diffusion

• Osmosis

• Concentration

• Dilution

Why don't plant cells burst when placed in pure distilled water?

• They have a flexible cell membrane

• They have a rigid cell wall

• They have low turgor pressure

• They have a high concentration of solutes

What is the term for the pressure that helps plants stand upright?

• Turgor pressure

• Hydrostatic pressure

• Atmospheric pressure

• Osmotic pressure

Why is pure distilled water not used in IVs for dehydrated patients?

• It does not hydrate effectively

• It would cause cells to burst

• It is too expensive

• It is not sterile