Osmosis in Action: Investigating Fluid Movement Through Potatoes

The video tutorial explains osmosis, a process where fluids move from higher to lower concentration through a semi-permeable membrane. It describes an experiment using a potato as an osmometer to demonstrate osmosis. The procedure involves setting up the potato with sugar solution and observing water movement. The tutorial concludes with observations and emphasizes the importance of concentration differences. Precautions for accurate results are also discussed.

What is the primary driving force behind the movement of fluids in osmosis?

• Pressure difference

• Temperature gradient

• Free energy difference

• Gravity

What is the role of the semi-permeable membrane in osmosis?

• To allow only solvent molecules to pass

• To allow all molecules to pass

• To allow only solute molecules to pass

• To block all molecules

Which of the following is NOT required for the osmosis experiment?

• 20% sugar solution

• A thermometer

• A knife

• A large potato

What is the first step in preparing the potato for the experiment?

• Cutting the potato in half

• Peeling the potato

• Filling the potato with sugar solution

• Making a cavity in the potato

How is the initial level of sugar solution marked in the potato cavity?

• With a pin

• With a pen

• With a ruler

• With a marker

What is the function of the potato in this experiment?

• An osmometer

• A container

• A thermometer

• A filter

What causes the rise in the level of sugar solution in the potato cavity?

• Expansion of the potato

• Absorption of sugar

• Entry of water through the potato cells

• Evaporation of water

Why does water move from the Petri dish to the potato cavity?

• Due to temperature difference

• Due to concentration difference

• Due to pressure difference

• Due to gravitational pull

What should be ensured about the cavity in the potato?

• It should be deep enough

• It should be shallow

• It should be wide

• It should be narrow

Why should the sugar solution have a high osmotic concentration?

• To ensure proper osmosis

• To prevent evaporation

• To increase pressure

• To maintain temperature