OSMOSIS/DIFFUSION

Front

What is osmosis?

Back

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

Front

What is diffusion?

Back

Diffusion is the process by which molecules spread from an area of high concentration to an area of low concentration until equilibrium is reached.

Front

What is an isotonic solution?

Back

An isotonic solution is a solution that has the same solute concentration as another solution, resulting in no net movement of water across a semipermeable membrane.

Front

What happens to a cell in a hypertonic solution?

Back

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

Front

What happens to a cell in a hypotonic solution?

Back

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

Front

What is the role of a selectively permeable membrane?

Back

A selectively permeable membrane allows certain molecules to pass through while blocking others, facilitating processes like osmosis and diffusion.

Front

What is the concentration gradient?

Back

The concentration gradient is the difference in the concentration of a substance between two areas, which drives the movement of molecules during diffusion.

Front

What is active transport?

Back

Active transport is the movement of molecules across a cell membrane from a region of lower concentration to a region of higher concentration, using energy (ATP).

Front

How does temperature affect diffusion?

Back

Higher temperatures increase the kinetic energy of molecules, leading to faster diffusion rates.

Front

What is equilibrium in the context of diffusion?

Back

Equilibrium is the state reached when the concentration of molecules is equal throughout a space, resulting in no net movement of molecules.