EOC Review #10 (Homeostasis & Cell Transport)

Front

What is the function of the cell membrane?

Back

The cell membrane maintains homeostasis by regulating what enters and exits the cell.

Front

What is diffusion?

Back

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

Front

What does active transport require?

Back

Active transport requires the direct use of ATP (adenosine triphosphate) to move substances against their concentration gradient.

Front

What is osmosis?

Back

Osmosis is the diffusion of water across a selectively permeable membrane.

Front

What does it mean if a solution is hypotonic?

Back

A hypotonic solution has a lower concentration of solutes compared to the inside of the cell, causing water to enter the cell.

Front

What is homeostasis?

Back

Homeostasis is the process by which living organisms maintain a stable internal environment despite external changes.

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 gradient.

Front

What is a hypertonic solution?

Back

A hypertonic solution has a higher concentration of solutes compared to the inside of the cell, causing water to leave the cell.

Front

What role do proteins play in cell transport?

Back

Proteins facilitate the transport of substances across the cell membrane, especially in active transport and facilitated diffusion.

Front

What is facilitated diffusion?

Back

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