Osmosis and Life

Front

What is osmosis?

Back

Osmosis is the movement of water molecules through a selectively permeable membrane from an area of lower solute concentration to an area of higher solute concentration.

Front

Define hypertonic solution.

Back

A hypertonic solution has a higher concentration of solute compared to another solution, leading to the movement of water out of cells.

Front

What happens to a cell in a hypertonic solution?

Back

In a hypertonic solution, water moves out of the cell, causing it to shrink or crenate.

Front

Define hypotonic solution.

Back

A hypotonic solution has a lower concentration of solute compared to another solution, leading to the movement of water into cells.

Front

What happens to a cell in a hypotonic solution?

Back

In a hypotonic solution, water moves into the cell, causing it to swell and potentially burst.

Front

What is isotonic solution?

Back

An isotonic solution has equal concentrations of solute on both sides of a membrane, resulting in no net movement of water.

Front

Explain the significance of osmotic pressure.

Back

Osmotic pressure is the pressure required to prevent the flow of water across a semipermeable membrane, crucial for maintaining cell integrity.

Front

What is the role of aquaporins in osmosis?

Back

Aquaporins are specialized protein channels that facilitate the rapid transport of water across cell membranes.

Front

How does osmosis affect plant cells?

Back

Osmosis helps maintain turgor pressure in plant cells, which is essential for structural support and growth.

Front

What is the relationship between solute concentration and water movement?

Back

Water moves from areas of low solute concentration to areas of high solute concentration, balancing solute levels.