Bio Unit 4: Q1 Up to Solutions

Front

What is osmosis?

Back

Osmosis is the movement of water across a selectively permeable membrane from an area of low solute concentration to an area of high solute concentration.

Front

What direction does water move during osmosis?

Back

Water moves from high to low concentration.

Front

What is dynamic equilibrium?

Back

Dynamic equilibrium is the result of diffusion where there is continuous movement of particles but no overall change in concentration because the particles stay evenly spread out.

Front

What type of solution causes a cell to swell?

Back

Hypotonic solution.

Front

What happens to a cell in an isotonic solution?

Back

A cell in an isotonic solution will stay the same size.

Front

Define hypertonic solution.

Back

A hypertonic solution has a higher concentration of solutes compared to the inside of the cell, causing the cell to lose water and shrink.

Front

Define hypotonic solution.

Back

A hypotonic solution has a lower concentration of solutes compared to the inside of the cell, causing the cell to gain water and swell.

Front

What is the concentration gradient?

Back

The concentration gradient is the difference in the concentration of a substance between two areas.

Front

What is diffusion?

Back

Diffusion is the movement of particles from an area of high concentration to an area of low concentration.

Front

What role do proteins play in cell membranes?

Back

Proteins in cell membranes help transport substances across the membrane and facilitate communication between the cell and its environment.