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. |