LS1.7 EOC Pre-Assessment

Front

What is diffusion?

Back

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

Front

What is facilitated diffusion?

Back

Facilitated diffusion is a type of passive transport that uses proteins to help move substances across a cell membrane without using energy.

Front

What is osmosis?

Back

Osmosis is the diffusion of water molecules through a selectively permeable membrane from an area of lower solute concentration to an area of higher solute concentration.

Front

What is homeostasis?

Back

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

Front

What is active transport?

Back

Active transport is the movement of substances across a cell membrane against their concentration gradient, requiring energy.

Front

What is passive transport?

Back

Passive transport is the movement of substances across a cell membrane without the use of energy, following the concentration gradient.

Front

What is endocytosis?

Back

Endocytosis is a type of active transport where cells engulf substances from the outside environment into the cell.

Front

What is exocytosis?

Back

Exocytosis is a process by which cells expel materials in vesicles that fuse with the cell membrane.

Front

What is the difference between active and passive transport?

Back

Active transport requires energy to move substances against their concentration gradient, while passive transport does not require energy and moves substances along their concentration gradient.

Front

What role do proteins play in facilitated diffusion?

Back

Proteins act as channels or carriers that help specific molecules cross the cell membrane during facilitated diffusion.