Biology (Essentials of the Living World)

1. Cellular Organization 2. Metabolism 3. Homeostasis 4. Growth and reproduction 5. Heredity

1. Subatomic particles (simplest) 2. Atoms 3. Molecules 4. Organelles 5. Cells 6. Tissue 7. Organs 8. Organ system 9. Multicellular organisms 10. Populations 11. Communities 12. Ecosystems 13. Biosphere (most complex)

Novel properties in the hierarchy of life that were not present at the simpler levels of organization

The differential reproduction of genotypes caused by factors in the environment. Leads to evolutionary change.

The condition in which two or more dissimilar organisms live together in close association; includes paasitism, commensalism, and mutualism.

1. observing what is going on; 2. forming a set of hypotheses; 3. making predictions; 4. testing them and 5. carrying out controls, until one or more of the hypotheses have been eliminated; and 6. forming conclusions based on the remaining hypothesis.

(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.

Genetic change in a population of organisms over time (generations). Darwin proposed that natural selection was the mechanism of evolution.

all ecosystems together on earth

complexity can arise from interaction of simpler components

- Carbohydrates - Lipids - Proteins - Nucleic acids