Unit 5 Review

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 organelle is responsible for processing and packaging materials for export from the cell?

Back

The Golgi apparatus (Organelle E) is responsible for processing and packaging materials for export from the cell.

Front

What is the function of vacuoles in plant and animal cells?

Back

Vacuoles store water and other substances; they are larger in plant cells than in animal cells.

Front

What is facilitated diffusion?

Back

Facilitated diffusion is the process of passive transport of molecules across a cell membrane via specific transmembrane integral proteins.

Front

What does it mean if a cell is in a hypertonic solution?

Back

A hypertonic solution has a higher solute concentration outside the cell than inside, causing the cell to lose water and shrink.

Front

What is the difference between passive and active transport?

Back

Passive transport does not require energy and moves substances from high to low concentration, while active transport requires energy to move substances from low to high concentration.

Front

What role do cell membranes play in transport?

Back

Cell membranes regulate the movement of substances in and out of the cell, maintaining homeostasis.

Front

What is osmosis?

Back

Osmosis is the diffusion of water across a selectively permeable membrane from an area of low solute concentration to an area of high solute concentration.

Front

What is the significance of the concentration gradient in cellular transport?

Back

The concentration gradient is the difference in concentration of a substance across a space, driving passive transport processes.

Front

What are the main types of cellular transport?

Back

The main types of cellular transport are passive transport (diffusion, osmosis, facilitated diffusion) and active transport.