Front

What is equilibrium in the context of molecular movement?

Back

Equilibrium refers to a state where molecular movement continues, but there is no overall change in concentration.

Front

What is osmosis?

Back

Osmosis is the process by which water molecules move across a semipermeable membrane from an area of lower solute concentration to an area of higher solute concentration, helping maintain a normal internal cellular environment.

Front

What happens to a cell in a hypotonic solution?

Back

In a hypotonic solution, a cell can swell and burst due to the influx of water.

Front

How do water molecules behave when a red blood cell is placed in distilled water?

Back

Water molecules will move into the red blood cell, causing it to swell.

Front

What is phagocytosis?

Back

Phagocytosis is the process by which a cell engulfs solid particles, often referred to as 'cell eating'.

Front

What is passive transport?

Back

Passive transport is the movement of substances across a cell membrane without the use of energy, typically along the concentration gradient.

Front

What is active transport?

Back

Active transport is the movement of substances against their concentration gradient, requiring energy, often in the form of ATP.

Front

Define diffusion.

Back

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

Front

What is the role of a semipermeable membrane in osmosis?

Back

A semipermeable membrane allows certain molecules, like water, to pass through while blocking others, facilitating osmosis.

Front

What is the difference between pinocytosis and phagocytosis?

Back

Pinocytosis is the process of 'cell drinking', where a cell engulfs liquid, while phagocytosis is 'cell eating', where a cell engulfs solid particles.