Unit 3 Lesson 6 Vocab Flashcard/Weekly Check

Front

What is Active Transport?

Back

The movement of materials across the cell membrane from areas of low concentration to areas of high concentration, requiring energy from the cell.

Front

What does it mean for a cell membrane to be semi-permeable?

Back

It means that the cell membrane allows only certain particles to cross into or out of the cell.

Front

What is the process called when water moves from high concentration to low concentration?

Back

Osmosis.

Front

Define Diffusion.

Back

The movement of molecules from an area of high concentration to an area of low concentration.

Front

What is Osmosis?

Back

The diffusion of water through a semi-permeable membrane.

Front

What is Passive Transport?

Back

The movement of materials across the cell membrane without the use of energy, typically from high to low concentration.

Front

What is Equilibrium in the context of cell membranes?

Back

A state where the concentration of substances is equal on both sides of the membrane.

Front

What is Endocytosis?

Back

The process by which a cell takes in materials by engulfing them in a membrane.

Front

What is Exocytosis?

Back

The process by which a cell expels materials by vesicles fusing with the cell membrane.

Front

What role do proteins play in the cell membrane?

Back

Proteins help transport substances across the membrane and can act as receptors for signaling.