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Definition
| NONLIVING MATERIALS IN THE ENVIRONMENT-- SUCH AS ELEMENTS,SUNLIGHTS,AND SOIL--THAT INFLUENCE AND ARE INFLUENCED BY LIVING (BIOTIC) ENTITES ON THE PLANET. |
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Definition
| A NEUROTRANSMITTER RELEASED BY NEURONS TO EXCITE AN ACTION POTENTIAL OR TRIGGER A MUSCLE TO CONTRACT. |
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Term
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Definition
| HYDROGEN IONS (H+) DONORS. ACIDS ARE VERY IMPORTANT IN THE CHEMICAL REACTIONS OF LIFE BECAUSE THEY ARE HIGHLY REACTIVE. ACIDS HAVE pH VALUES BELOW 7. THEY ARE THE OPPOSITES OF THE BASES. |
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Term
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Definition
PROTEINS FILAMENTS THAT, ALONG WITH MYOSIN, ALLOW MUSCLES TO CONTRACT.
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Term
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Definition
| THE PART OF AN ENZYME THAT INTERACTS WITH, OR BIND TO , A SUBSTRATE |
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Term
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Definition
| THE MOVEMENT OF MOLECULES ACROSS A CELL MEMBRANE FROM A REGION OF LOWER CONCENTRATION TO A REGION OF HIGHER CONCENTRATION. BECAUSE ACTIVE TRANSPORT INVOLVES MOVING THE MOLECULE AGAINST THE NATURAL FLOW OF THE CONCENTRATION GRADIENT, THE PROCESS REQUIRES ENERGY. |
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Term
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Definition
| THE EVOLUTIONARY PROCESS BY WHIICH ANCESTRAL FORMS OF AN ORGANISM ARE DIVERSIFIED THROUGH ADAPTATION TO NEW ENVIRONMENTS. |
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