Exploring Diffusion and Osmosis Concepts

The video explains the fundamental concepts of diffusion and osmosis, highlighting their roles in biological systems. Diffusion is described as the movement of particles from high to low concentration, with examples from everyday life and human physiology. Osmosis is introduced as the movement of water across a partially permeable membrane, crucial for plant hydration and cellular function. The video emphasizes the importance of concentration gradients in these processes.

What are all animals and plants made of?

• Organs

• Tissues

• Molecules

• Cells

What happens to ink particles when dropped into water?

• They spread out

• They change color

• They sink to the bottom

• They evaporate

What causes the smell of burnt toast to spread around the house?

• Evaporation

• Osmosis

• Diffusion

• Convection

How do digested food particles move from the gut to the blood?

• Active transport

• Diffusion

• Osmosis

• Filtration

What is the main principle of diffusion?

• Movement from low to high concentration

• Movement from high to low concentration

• Movement through a semi-permeable membrane

• Movement against a concentration gradient

What is required for osmosis to occur?

• A fully permeable membrane

• A solid barrier

• A partially permeable membrane

• A non-permeable membrane

In osmosis, which substance diffuses through the membrane?

• Salt

• Sugar

• Water

• Oxygen

What happens when the concentrations on both sides of a membrane are equal?

• Osmosis stops completely

• Water flows only in one direction

• There is an equal flow of water in both directions

• The membrane dissolves

How does water enter plant root cells?

• Diffusion

• Active transport

• Osmosis

• Evaporation

What is the role of osmosis in plant tissues?

• To absorb sunlight

• To produce energy

• To transport nutrients

• To make the plant tissue rigid