Bio: Cell Transport Practice Test

Front

What is phagocytosis?

Back

Phagocytosis is the process by which cells take in large molecules or particles, such as bacteria, by engulfing them.

Front

What is the primary function of the cell membrane?

Back

The cell membrane regulates what enters and leaves the cell and separates the cell from its environment.

Front

Define diffusion.

Back

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

Front

What happens to a plant cell in salt water?

Back

A plant cell will shrivel because water diffuses out of the cell.

Front

What does the cell membrane do?

Back

The cell membrane regulates what enters and leaves the cell, helps maintain homeostasis, and keeps the contents of the cell in place.

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 is osmosis?

Back

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

Front

What is the difference between endocytosis and exocytosis?

Back

Endocytosis is the process of taking substances into the cell, while exocytosis is the process of expelling substances from the cell.

Front

What is homeostasis?

Back

Homeostasis is the ability of a cell or organism to maintain a stable internal environment despite changes in external conditions.

Front

What role do transport proteins play in cell transport?

Back

Transport proteins help move substances across the cell membrane that cannot directly diffuse through the lipid bilayer.