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Biology 101
| Term | Definition |
|---|---|
| Commensalism | A relationship between two organisms where one receives a benefit or benefits from the other and the other is not affected by it. |
| Paasitism | A relationship between two organisms of different species where one benefits and the other is harmed. |
| Hypothesis | A supposition or proposed explanation made on the basis of limited evidence as a starting point for further investigation. |
| Emergent Property | Complexity can arise from interaction of simpler components. |
| 4 Types of Organic Molecules | Carbohydrates Lipids Proteins Nucleic Acids |
| Biosphere | All ecosystems together on earth. |
| DNA (Deoxyribonucleic Acid) | The basic storage vehicle or central plan of heredity information. It is stored as a sequence of nucleotides in a linear nucleotide polymer. Two of the polymers wind around each other like the outside and inside rails of a circular staircase. |
| Emergent Property | Novel properties in the hierarchy of life that were not present at the simpler levels of organization. |
| Evolution | Genetic change in a population of organisms over time (generations). Darwin proposed that natural selection was a mechanism of evolution. |
| The five basic principles of living things | Cellular Organization Metabolism Homeostasis Growth and Reproduction Heredity |
| A Hierarchy of Increasing Complexity | Subatomic Particles (Simplest) Atoms Molecules Organelles Cells Tissues Organs Organ System Multicellular Organisms Populations Communities Ecosystems Biosphere (Most Complex) |
| Natural Selection | The Differential reproduction of genotypes caused by factors in the environment. Leads to evolutionary change. |
| The Scientific Process / Method | Observing what is going on. Forming a set of hypothesis. Making predictions. Testing them & Carrying out controls until one or more of the hypotheses have been eliminated & Forming conclusions based on the remaining hypothesis. |
| Symbiosis | The condition in which two or more dissimilar organisms live together in close association, includes paastism, commensalism & mutualism. |