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Biology 101

TermDefinition
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.
Created by: LauraMoyer
 

 



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