Cell Transport

Front

What happens to a cell with a 2% concentration of solute when placed in water with a 2.5% concentration of solute?

Back

The cell will shrink.

Front

What is the term for the diffusion of water across a selectively permeable membrane?

Back

Osmosis.

Front

What is the natural movement of a substance from areas of high concentration to areas of low concentration called?

Back

Diffusion.

Front

What is the form of passive transport that is aided by a protein embedded in a cellular membrane?

Back

Facilitated diffusion.

Front

What is the process called where a cellular membrane envelopes material to take it into the cell?

Back

Endocytosis.

Front

Define diffusion in the context of cell transport.

Back

Diffusion is the movement of molecules from an area of higher concentration to an area of lower concentration.

Front

What is the difference between passive and active transport?

Back

Passive transport does not require energy, while active transport requires energy to move substances against their concentration gradient.

Front

What role do protein channels play in facilitated diffusion?

Back

Protein channels help specific molecules cross the cell membrane more easily.

Front

What is osmosis and why is it important for cells?

Back

Osmosis is the movement of water across a membrane, crucial for maintaining cell turgor and homeostasis.

Front

What is the significance of concentration gradients in cell transport?

Back

Concentration gradients drive the movement of substances in and out of cells, influencing diffusion and osmosis.