Osmosis

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

What happens to a cell in a hypertonic solution?

Back

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

Front

What is a hypotonic solution?

Back

A hypotonic solution has a lower concentration of solutes compared to the inside of the cell, leading to water moving into the cell.

Front

Define isotonic solution.

Back

An isotonic solution has the same concentration of solutes as the inside of the cell, resulting in no net movement of water.

Front

What role does the cell membrane play in osmosis?

Back

The cell membrane regulates the movement of water and solutes in and out of the cell.

Front

What does it mean for a membrane to be permeable?

Back

A permeable membrane allows certain substances, such as water, to pass through it.

Front

What is the significance of osmotic pressure?

Back

Osmotic pressure is the pressure required to prevent the flow of water across a semipermeable membrane, influencing cell volume and shape.

Front

How does osmosis affect plant cells?

Back

In plant cells, osmosis helps maintain turgor pressure, which keeps the plant upright and supports its structure.

Front

What is the difference between passive and active transport?

Back

Passive transport does not require energy and moves substances along their concentration gradient, while active transport requires energy to move substances against their concentration gradient.

Front

What is the effect of saltwater on human cells?

Back

Saltwater is hypertonic to human cells, causing water to leave the cells and leading to dehydration.