Cell Transport

Front

What is osmosis?

Back

Osmosis is a form of passive transport where water molecules move across a semipermeable membrane from an area of lower solute concentration to an area of higher solute concentration.

Front

What type of transport requires energy?

Back

Active transport requires energy to move solutes against their concentration gradient.

Front

Define active transport.

Back

Active transport is the movement of molecules across a cell membrane from a region of lower concentration to a region of higher concentration, requiring energy (ATP).

Front

What is passive transport?

Back

Passive transport is the movement of molecules across a cell membrane without the use of energy, typically along the concentration gradient.

Front

What is endocytosis?

Back

Endocytosis is an active transport process where cells engulf substances from the outside environment, forming a vesicle.

Front

What is ATP?

Back

ATP (adenosine triphosphate) is a molecule that carries energy within cells, used for various cellular processes including active transport.

Front

What does 'low to high' concentration mean in terms of transport?

Back

'Low to high' concentration refers to the movement of substances against their concentration gradient, characteristic of active transport.

Front

What is facilitated diffusion?

Back

Facilitated diffusion is a type of passive transport that uses transport proteins to help move molecules across the cell membrane.

Front

What role do transport proteins play in cell transport?

Back

Transport proteins assist in the movement of substances across the cell membrane, either passively or actively.

Front

What is exocytosis?

Back

Exocytosis is an active transport process where cells expel materials in vesicles to the outside environment.