Passive Transport

Front

What is passive transport?

Back

Passive transport is the movement of substances across a cell membrane without the use of energy, relying on concentration gradients.

Front

What does it mean for a cell membrane to be semi-permeable?

Back

A semi-permeable membrane allows certain substances to pass through while blocking others, regulating what enters and exits the cell.

Front

What is the role of the cell membrane in maintaining homeostasis?

Back

The cell membrane helps maintain homeostasis by controlling the movement of substances in and out of the cell, ensuring a stable internal environment.

Front

What happens to a cell in a hypotonic solution?

Back

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

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 osmosis?

Back

Osmosis is the diffusion of water molecules across a semi-permeable membrane from an area of lower solute concentration to an area of higher solute concentration.

Front

What is diffusion?

Back

Diffusion is the movement of particles from an area of higher concentration to an area of lower concentration until equilibrium is reached.

Front

What is the difference between passive and active transport?

Back

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

Front

What is selective permeability?

Back

Selective permeability is the property of a cell membrane that allows certain molecules to pass through while restricting others.

Front

How do ion channels facilitate passive transport?

Back

Ion channels are proteins that allow specific ions to pass through the cell membrane, facilitating passive transport based on concentration gradients.