24 - 25 Cell Assessment 3: Cell Transport

Front

What is the definition of 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 does hypertonic mean in terms of cell tonicity?

Back

A hypertonic solution has a higher concentration of solutes compared to the inside of the cell, causing water to move out of the cell.

Front

What is the role of aquaporins in cell transport?

Back

Aquaporins are specialized proteins that facilitate the transport of water across cell membranes.

Front

If a solution is 15% NaCl, what percentage of the solution is water?

Back

85% water.

Front

What happens to a cell placed in a hypertonic solution?

Back

The cell will lose water and shrink due to osmosis.

Front

What is the definition of diffusion?

Back

Diffusion is the movement of molecules from an area of higher concentration to an area of lower concentration.

Front

What is 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 is the effect of placing a cell in an isotonic solution?

Back

There is no net movement of water; the cell remains the same size.

Front

What does it mean for a solution to be hypotonic?

Back

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

Front

What is the primary function of the cell membrane?

Back

The cell membrane regulates what enters and exits the cell, maintaining homeostasis.