Osmosis diffusion

Front

What is osmosis?

Back

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

Front

What does selectively permeable mean?

Back

Selectively permeable refers to a property of cell membranes that allows certain molecules to pass through while blocking others.

Front

What is diffusion?

Back

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

Front

What is the role of the cell membrane?

Back

The cell membrane protects the cell, provides structure, and regulates the movement of substances in and out of the cell.

Tags

NGSS.MS-LS1-2

Front

What is equilibrium in the context of diffusion?

Back

Equilibrium occurs when the concentration of a substance is equal inside and outside of a cell, resulting in no net movement of that substance.

Front

Why can't starch pass through the cell membrane?

Back

Starch is too large and complex to pass through the selectively permeable cell membrane.

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.

Tags

NGSS.MS-LS1-5

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 is the difference between active transport and passive transport?

Back

Active transport requires energy to move substances against their concentration gradient, while passive transport does not require energy and moves substances along their concentration gradient.

Front

What is a concentration gradient?

Back

A concentration gradient is the difference in the concentration of a substance across a space, which drives diffusion.

Tags

NGSS.MS-PS1-2