Movement in and out of cells igcse

Active transport

________ is defined as the movement of molecules from a region of a lower concentration gradient to a region of higher concentration gradient using energy from respiration.

Energy

________ is needed because particles are being moved against a concentration gradient, in the opposite direction from which they would naturally move (by diffusion)

Osmosis

________ is defined as the movement of water molecules from a region of a higher water potential to a region of a lower water potential through a partially permeable membrane down its concentration gradient.

random movement of particles

It is defined as the uncontrolled or ________ as they collide with each other.

Diffusion

________ is defined as the movement of molecules from a region of a higher concentration gradient to a region of a lower concentration gradient.

cell membrane

Since the ________ is partially permeable it only allows small molecules to enter inside it and not big molecules.

Active transport

________ is vital process for the movement of molecules or ions across membranes.