Cell Transportation Review!!!

Front

What does it mean that the cell membrane is semi-permeable?

Back

The cell membrane allows certain substances to pass through while blocking others, maintaining the internal environment of the cell.

Front

What is osmosis?

Back

Osmosis is the passive transport process where water molecules move through a semi-permeable membrane from an area of lower solute concentration to an area of higher solute concentration.

Front

What are endocytosis and exocytosis?

Back

Endocytosis is the process by which cells take in substances by engulfing them, while exocytosis is the process of expelling substances from the cell.

Front

What regulates what enters and leaves the cell?

Back

The cell membrane regulates what enters and leaves the cell.

Front

What is simple diffusion?

Back

Simple diffusion is the passive movement of small molecules through the phospholipid bilayer of the cell membrane without the need for energy.

Front

What is facilitated diffusion?

Back

Facilitated diffusion is a type of passive transport that uses protein channels to help move larger or polar molecules across the cell membrane.

Front

What is active transport?

Back

Active transport is the movement of substances across the cell membrane against their concentration gradient, requiring energy (ATP).

Front

What is the phospholipid bilayer?

Back

The phospholipid bilayer is a double layer of phospholipids that makes up the cell membrane, providing a barrier to most water-soluble substances.

Front

What role do membrane proteins play in transport?

Back

Membrane proteins assist in the transport of substances across the cell membrane, either by facilitating diffusion or by acting as pumps in active transport.

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.