| A | B |
|---|
| DIFFUSION | THE MOVEMENT OF MOLECULES FROM AN AREA OF HIGH CONCENTRATION TO AN AREA OF LOW CONCENTRATION |
| OSMOSIS | DIFFUSION OF WATER THROUGH A SEMI-PERMEABLE MEMBRANE |
| SEMI-PERMEABLE MEMBRANE | ALLOWS ONLY SOME SUBSTANCES TO GO THROUGH |
| WHY DOES A BLOOD CELL BURST WHEN PLACED IN DISTILLED WATER? | WATER MOVES INTO THE CELL BECAUSE ITS CONCENTRATION IS HIGHER OUTSIDE THE CELL. |
| WHY DOES A CELL SHRINK WHEN PLACED IN 10% SALT WATER? | WATER MOVES OUT OF THE CELL BECAUSE ITS CONCENTRATION IS HIGHER INSIDE THE CELL. |
| WHAT CAUSES DIFFUSION? | COLLISIONS AMONG MOLECULES CAUSE THEM TO PUSH AWAY FROM ONE ANOTHER |
| WHY DON'T PLANT CELLS BURST WHEN PLACED IN PURE WATER? | THEY HAVE RIGID CELL WALLS |
| ACTIVE TRANSPORT | MOLECULES MOVE FROM AN AREA OF LOW CONCENTRATION TO AN AREA OF HIGH CONCENTRATION |
| WHY DOES A PLANT WILT WHEN IT IS NOT WATERED? | WATER MOVES OUT OF ROOT CELLS BECAUSE THERE IS LESS WATER IN THE SOIL |
| WHAT ROLE DOES DIFFUSION PLAY IN CELLS? | IT ALLOWS CELLS TO RECEIVE OXYGEN AND TO GET RID OF CARBON DIOXIDE |
| WHAT IS ENDOCYTOSIS? | PROCESS BY WHICH LARGE MOLECULES ENTER A CELL BY BECOMING ENCLOSED IN A VACUOLE. |
| TWO TYPES OF ENDOCYTOSIS | PINOCYTOSIS AND PHAGOCYTOSIS |
| WHAT IS EXOCYTOSIS? | PROCESS BY WHICH WASTES OR SECRETION PRODUCTS ARE RELEASED IN SMALL VACUOLES BY THE CELL. |
| WHAT IS PHAGOCYTOSIS? | THE CELL MEMBRANE ENCIRCLES LARGE MOLECULES AND BRINGS THEM INTO THE CELL. |
| WHAT IS PINOCYTOSIS? | CELL MEMBRANE TAKES IN FLUID DROPLETS BY FORMING VACUOLES AROUND THEM. |
