Cell Transport

Front

What is a selectively permeable membrane?

Back

A membrane that allows some substances to pass through while blocking others, crucial for maintaining homeostasis in cells.

Front

Does passive transport require energy?

Back

No, passive transport does not require energy as it relies on the concentration gradient.

Front

What is exocytosis?

Back

A process where a vesicle fuses with the cell membrane to release its contents outside the cell.

Front

Define active transport.

Back

The movement of particles from an area of lower concentration to an area of higher concentration, requiring energy.

Front

What role does the cell wall play in plant cells?

Back

The cell wall provides structural support and protection, preventing plant cells from bursting in hypotonic solutions.

Front

What is the difference between active and passive transport?

Back

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

Front

What is osmosis?

Back

The diffusion of water across a selectively permeable membrane from an area of lower solute concentration to an area of higher solute concentration.

Front

What happens to a red blood cell in pure water?

Back

It swells and may burst due to the influx of water.

Front

What is the function of the cell membrane?

Back

To regulate what enters and exits the cell, maintaining the internal environment.

Front

What is facilitated diffusion?

Back

A type of passive transport that uses protein channels to help larger or polar molecules cross the cell membrane.