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Biology 101

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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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.  
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Paasitism   A relationship between two organisms of different species where one benefits and the other is harmed.  
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Hypothesis   A supposition or proposed explanation made on the basis of limited evidence as a starting point for further investigation.  
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Emergent Property   Complexity can arise from interaction of simpler components.  
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4 Types of Organic Molecules   Carbohydrates Lipids Proteins Nucleic Acids  
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Biosphere   All ecosystems together on earth.  
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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.  
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Emergent Property   Novel properties in the hierarchy of life that were not present at the simpler levels of organization.  
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Evolution   Genetic change in a population of organisms over time (generations). Darwin proposed that natural selection was a mechanism of evolution.  
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The five basic principles of living things   Cellular Organization Metabolism Homeostasis Growth and Reproduction Heredity  
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A Hierarchy of Increasing Complexity   Subatomic Particles (Simplest) Atoms Molecules Organelles Cells Tissues Organs Organ System Multicellular Organisms Populations Communities Ecosystems Biosphere (Most Complex)  
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Natural Selection   The Differential reproduction of genotypes caused by factors in the environment. Leads to evolutionary change.  
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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.  
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Symbiosis   The condition in which two or more dissimilar organisms live together in close association, includes paastism, commensalism & mutualism.  
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