11/5 Cell Processes Test

Front

What is osmosis?

Back

Osmosis is the movement of water across a selectively permeable membrane from an area of lower solute concentration to an area of higher solute concentration.

Front

What is active transport?

Back

Active transport is the movement of substances across a cell membrane from an area of lower concentration to an area of higher concentration, requiring energy.

Front

What is a solvent?

Back

A solvent is the liquid part of a solution, in which solutes are dissolved; for example, water is a common solvent.

Front

What does selectively permeable mean?

Back

Selectively permeable refers to a property of cell membranes that allows some substances to pass through while blocking others.

Front

What is endocytosis?

Back

Endocytosis is the process by which a cell membrane surrounds a particle and encloses it in a vesicle to bring it into the cell.

Front

What is diffusion?

Back

Diffusion is the passive movement of particles 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 and moves substances down their concentration gradient, while active transport requires energy to move substances against their concentration gradient.

Front

What role do vesicles play in cellular transport?

Back

Vesicles are small membrane-bound sacs that transport materials within the cell and can also facilitate endocytosis and exocytosis.

Front

What is exocytosis?

Back

Exocytosis is the process by which a cell expels materials in vesicles that fuse with the cell membrane, releasing their contents outside the cell.

Front

What is the concentration gradient?

Back

The concentration gradient is the difference in the concentration of a substance across a space, which drives the movement of substances during diffusion and osmosis.