Cell Transport Practice

Front

What is osmosis?

Back

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

Front

What happens to a cell in a high salt concentration solution?

Back

The cell will shrink due to the loss of water as it moves out of the cell to balance the solute concentration.

Front

What is diffusion?

Back

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

Front

What type of transport is diffusion?

Back

Diffusion is a type of passive transport.

Front

What is active transport?

Back

Active transport is the movement of molecules across a cell membrane from an area of low concentration to an area of high concentration, requiring energy.

Front

What is exocytosis?

Back

Exocytosis is the process by which a cell expels large materials or waste products by vesicles fusing with the cell membrane.

Front

What is endocytosis?

Back

Endocytosis is the process by which a cell takes in large materials by engulfing them in a vesicle.

Front

What is the difference between passive and active transport?

Back

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

Front

What is a selectively permeable membrane?

Back

A selectively permeable membrane allows certain molecules to pass through while blocking others, maintaining the internal environment of the cell.

Front

What is an isotonic solution?

Back

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