Osmosis and Solution Concentrations

The video explains osmosis, the passive transport of water, and its relation to solute concentration. It covers how water moves from high to low concentration and introduces terms like hypertonic, hypotonic, and isotonic. The video also discusses the importance of osmosis in maintaining cell health and its applications in medical settings, such as using saline solutions for rehydration.

What is the primary role of water in osmosis?

• To act as a solute

• To prevent solutes from crossing membranes

• To dissolve solutes

• To transport solutes across membranes

In which direction does water move during osmosis?

• From high to low water concentration

• From high to low solute concentration

• From low to high solute concentration

• From low to high water concentration

What does a hypertonic solution indicate?

• High solute concentration

• Equal solute and water concentration

• Low solute concentration

• High water concentration

Which term describes a solution with equal solute levels inside and outside a cell?

• Hypotonic

• Hypertonic

• Isotonic

• Equitonic

Why is it important for red blood cells to be in an isotonic solution?

• To enable them to transport more oxygen

• To prevent them from shrinking

• To allow them to absorb more solutes

• To ensure they maintain their shape

What happens to plant cells in a hypertonic environment?

• They become more rigid

• They shrivel and die

• They remain unchanged

• They swell and burst

Why do plant cells prefer a hypotonic environment?

• To increase solute concentration inside

• To allow water to rush in and create pressure

• To prevent water loss

• To maintain equal solute levels

What is the role of a cell wall in plant cells during osmosis?

• To prevent water from entering

• To allow solutes to pass through

• To facilitate water movement

• To protect the cell from bursting

Why is a saline solution used in medical rehydration?

• To maintain isotonic conditions

• To increase blood pressure

• To decrease solute concentration

• To enhance oxygen transport

What is the significance of osmosis in maintaining homeostasis?

• It manages energy production

• It controls cell division

• It balances solute levels

• It regulates temperature