Cell Membrane and Transport

Front

Movement of particles from high to low concentration.

Back

Passive Transport

Front

What is the definition of Selective Permeability?

Back

The ability of the cell membrane to allow some things to pass through while preventing other things from passing through.

Front

Water moves into root cells of a plant by...

Back

Osmosis

Front

To pump a solute (molecule) across a membrane against its gradient requires work; the cell must expend energy.

Back

Active Transport

Front

This cell organelle helps organisms maintain homeostasis by controlling what substances may enter or leave cells.

Back

Cell Membrane

Front

What is the primary function of the cell membrane?

Back

To protect the cell and regulate what enters and exits.

Front

Define Osmosis.

Back

The movement of water molecules from an area of higher water concentration to an area of lower water concentration through a selectively permeable membrane.

Front

What is Active Transport?

Back

The movement of molecules across a cell membrane from a region of lower concentration to a region of higher concentration, requiring energy.

Front

What is the difference between Passive and Active Transport?

Back

Passive transport does not require energy, while active transport requires energy to move substances against their concentration gradient.

Front

What role do proteins play in the cell membrane?

Back

Proteins assist in the transport of substances across the membrane and can act as receptors for signaling.