active and passive transport

Front

What is the function of vesicles in cellular transport?

Back

Vesicles are membrane-bound sacs that transport materials within the cell during processes like endocytosis and exocytosis.

Front

What is passive transport?

Back

Passive transport is the movement of substances across a cell membrane without the use of energy, relying on concentration gradients.

Front

Name three types of passive transport.

Back

Diffusion, osmosis, and facilitated diffusion.

Front

What is osmosis?

Back

Osmosis is the movement of water molecules through a semi-permeable membrane from an area of lower solute concentration to an area of higher solute concentration.

Front

What is diffusion?

Back

Diffusion is the process by which molecules spread from an area of high concentration to an area of low concentration.

Front

What is facilitated diffusion?

Back

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

Front

What is endocytosis?

Back

Endocytosis is the process by which cells engulf external substances, bringing them into the cell in vesicles.

Front

What is exocytosis?

Back

Exocytosis is the process by which cells expel materials in vesicles, releasing them outside the cell.

Front

Which type of transport requires energy: active or passive transport?

Back

Active transport requires energy, while passive transport does not.

Front

What is the difference between active transport and passive transport?

Back

Active transport moves substances against their concentration gradient and requires energy, while passive transport moves substances along their concentration gradient without energy.