Passive Transport

Front

What is a cell membrane?

Back

A cell membrane is a biological membrane that separates and protects the interior of all cells from the outside environment.

Front

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

Back

A semi-permeable membrane allows certain substances to pass through while blocking others.

Front

What is passive transport?

Back

Passive transport is the movement of molecules across a cell membrane without the use of energy, moving from areas of high concentration to areas of low concentration.

Front

What is osmosis?

Back

Osmosis is the diffusion of water molecules through a semi-permeable membrane.

Front

What is diffusion?

Back

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

Tags

NGSS.MS-LS1-2

Front

What is homeostasis?

Back

Homeostasis is the process by which a cell or organism maintains a stable internal environment despite changes in external conditions.

Tags

NGSS.HS-LS1-3

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 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.

Tags

NGSS.MS-LS1-2

Front

What is isotonic solution?

Back

An isotonic solution has the same concentration of solutes as the cell, resulting in no net movement of water.

Tags

NGSS.MS-LS1-2

Front

What role do protein channels play in passive transport?

Back

Protein channels facilitate the movement of specific molecules across the cell membrane during passive transport.