Science Vocab

Front 1

Cell Transport

Back 1

How materials get though the cell membrane and into or out of the cell

Front 2

Diffusion

Back 2

Is the natural movement of particles from areas where they are in high concentration to areas where they are in low concentration.

Front 3

Equilibrium

Back 3

Diffusion continues to the point where molecules move randomly with an = amount of molecules on either side. The concentration of a given molecule is the same throughout or on either side.At equilibrium materials move back and forth across the membrane maintain an equal concentration on both sides of the cell.

Front 4

Passive Transport

Back 4

The movement of molecules across the cell membrane by diffusion. Does not require cell energy!!!

Front 5

Semi-Permeable membrane

Back 5

membranes that have openings called pores that let water,oxygen , carbon dioxide and certain other small molecules go through.

Front 6

Concentration Gradient

Back 6

A concentration gradient exists when two or more solutions of differing concentrations are in close proximity.One side has a high and the other has a lower concentration of molecules. To move down a concentration gradient is to move from areas of high to areas of low concentration

Front 7

Solution

Back 7

A liquid and it's dissolved particles.

Front 8

Solvent

Back 8

It is the liquid in which dissolved substances or particles are in

Front 9

Solute

Back 9

The particles that are dissolved in the solvent. sugars,salt,starches and other substances dissolved in a solution are called solute.

Front 10

Hypotonic Solution

Back 10

is one that has less solute

Front 11

Hypertonic solution

Back 11

is one that has a high solute concentration .

Front 12

Isotonic

Back 12

solution is in equilibrium as the cell it surrounds;of equal concentration to the cell.

Front 13

Osmosis

Back 13

The passive diffusion of water molecules through a semi-permiable membrane.

Front 14

Active Transport

Back 14

When concentration moves from low to high.requires energy

Front 15

Endocytosis

Back 15

process takes large molecules into cell by engulfing them.
Endo-to take in

Front 16

Phagocytosis

Back 16

process of engulfing large Particles into cell.
cellular eating

Front 17

Pinocytosis

Back 17

refers to taking in droplets of fluid from outside of the cell into the cell.like cellular drinking

Front 18

Exocytosis

Back 18

is the transfer of molecules or substances out of the cell..
exo=exit