Term
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Definition
| PASSIVE TRANSPORT; DIFFUSION OF WATER ACROSS A SELECTIVELY PERMEABLE MEMBRANE |
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Term
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Definition
| DIFFUSION OF SUBSTANCE ACROSS A BIOLOGICAL MEMBRANE |
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Definition
| A TYPE OF PASSIVE TRANSPORT THAT IS THE MOVEMENT OF MOLECULES FROM CONCENTRATED AREAS TO LESS CONCENTRATED AREAS |
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Term
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Definition
| SOLUTION WITH A HIGHER CONCENTRATION OF SOLUTES |
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Term
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Definition
| THE CONCENTRATION OF SOLUTE IS LOWER ON THE INSIDE THAN ON THE OUTSIDE |
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Term
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Definition
| THE CONCENTRATION OF SOLUTES ARE EQUAL |
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Term
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Definition
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Definition
| A regular increase of decrease in the intensity or density of a chemical substance. |
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Definition
| The force directed against a cell wall after the influx of water and the swelling of a walled cell due to osmosis. |
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Term
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Definition
| liquid that dissolves a solid, liquid, or gaseous solute, resulting in a solution. |
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Term
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Definition
| The random movement of microscopic particles suspended in a liquid or gas, caused by collisions with molecules of the surrounding medium. |
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Term
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Definition
| the uptake by or extrusion from a cell of fluid or particles, accomplished by invagination and vacuole formation (uptake) or by evagination (extrusion); it includes endocytosis, phagocytosis, pinocytosis, and exocytosis. |
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Term
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Definition
| CELL TAKES MACROMOLECULES AND PARTICULATE MATTER BY FORMING NEW VESICLES FROM THE PLASMA MEMBRANE |
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Term
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Definition
| a membrane-enveloped cellular organelle, found in many microorganisms, that periodically expands, filling with water, and then contracts, expelling its contents to the cell exterior: thought to be important in maintaining hydrostatic equilibrium |
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Term
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Definition
| SECRETES MACROMOLECULES BY FUSION OF VESICLES WITH PLASMA MEMBRANE |
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Term
| WHAT IS A CONTRACTILE VACUOLE? WHERE IS IT LOCATED? WHAT DOES IT DO? |
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Definition
| a membrane-enveloped cellular organelle, found in many microorganisms, that periodically expands, filling with water, and then contracts, expelling its contents to the cell exterior: thought to be important in maintaining hydrostatic equilibrium, the contractile vacuoles found in animal cells play an important role in the excretion of water and salts. |
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Term
| WHAT IS SELECTIVE PERMEABILITY? |
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Definition
| ALLOWS SOME SUBSTANCES TO CROSS MORE EASILY THAN OTHERS |
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Term
| WHY IS SELECTIVE PERMEABILITY NECESSARY FOR HOMEOSTASIS WITHIN A CELL? |
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Definition
IT MAINTAINS EQUILIBRIUM IN A CELL'S ENVIRONMENT |
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Term
| COMPARE ACTIVE AND PASSIVE TRANSPORT |
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Definition
| ACTIVE AND PASSIVE TRANSPORT HAVE THE SAME ENTRY POINT, AND INVOLVES THE SAME MOLECULES OF SUGAR OR AMINO ACIDS |
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Term
| CONTRAST ACTIVE AND PASSIVE TRANSPORT |
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Definition
| ACTIVE TRANSPORT REQUIRES ENERGY TO MOVE AND MOVES LOW TO HIGH--PASSIVE TRANSPORT DOES NOT REQUIRE ENERGY TO MOVE AND MOVES HIGH TO LOW |
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Term
| HOW ARE OSMOSIS AND DIFFUSION THE SAME AND HOW ARE THEY DIFFERENT? |
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Definition
| Diffusion and osmosis are related concepts, which involve movement of materials from areas of high concentration to areas of low concentration. Diffusion involves movement of any chemical from one place to another; osmosis refers to movement of water across a membrane. Only water can undergo osmosis. |
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Term
| WHAT ARE 2 TYPES OF CARRIER TRANSPORT AND IN WHICH DIRECTION DO THEY FLOW? |
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Definition
| ACTIVE & FACCILITATED TRANSPORT- ACTIVE TRANSPORT FLOWS ACROSS A MEMBRANE AGAINST ITS GRADIENT AND THE FACCILITATED TRANSPORT FLOWS ACROSS A MEMBRANE DOWN THEIR CONCENTRATION GRADIENT |
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