Basics of Osmosis

The video explains osmosis as the movement of water from low to high solute concentration to achieve equilibrium. It covers isotonic, hypertonic, and hypotonic solutions, detailing their effects on cells. In hypertonic solutions, cells shrink (crenation), while in hypotonic solutions, they swell and may burst (lysis). The importance of maintaining isotonic conditions is emphasized, with a real-world example of why drinking seawater is harmful.

What is the primary purpose of osmosis in cells?

• To increase solute concentration

• To balance solute concentration

• To create a hypertonic environment

• To decrease water concentration

In an isotonic solution, how do the solute concentrations inside and outside the cell compare?

• Higher inside the cell

• Higher outside the cell

• Equal inside and outside the cell

• Lower inside the cell

What happens to a cell placed in a hypertonic solution?

• It swells

• It remains the same

• It shrinks

• It bursts

What is the term used when a cell shrinks in a hypertonic solution?

• Lysis

• Crenation

• Diffusion

• Osmosis

In a hypotonic solution, which direction does water move?

• Out of the cell

• No movement

• Equally in and out

• Into the cell

Why is it dangerous to drink seawater?

• It is hypertonic

• It is isotonic

• It has no effect

• It is hypotonic

What is the desired state for cells in terms of solution concentration?

• Hypertonic

• Hypotonic

• Isotonic

• Variable