Biology chapter one

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Terms in this set (...)

Biosphere
All the environments of Earth that support life
Ecosystem
All the living and no living components of a particular environment
Community
All the living organisms in an ecosystem
Population
An interacting group of individuals of one species
Organism
An individual living entity
Hierarchy of organization
Biosphere,ecosystem,community,population,organism,organ systems, organs, tissues,cells,organelles,molecules, atoms
Producers
Photosynthetic organisms, use light energy from the sun , carbon dioxide, water, soil mineral nutrients to produce food
Consumers
Ultimately dependent on producers for food, take in O2, release carbon dioxide, heat
Decomposers
Break down dead organic material, which is recycled back to mineral nutrients for plants
Cells
Are the structural and functional units of life, perform all functions necessary for life, regulate their internal environment, take in and use energy, respond to the local environment, divide, differentiate, become quiescent, or die
Prokaryotes
Smaller and less complex than eukaryotes and lack a nucleus and other organelles
Eukaryotes
Generally larger and more complex and contain a nucleus and other organelles
All forms of life have common features
Genetic information within all cells is coded in dna molecules, each dna molecule is made up of chains of four chemical building blocks, order, regulation, growth and development, energy use, response to environment, reproduction, evolution
Theory of evolution
Change in allele frequency over time in a population by natural selection
Discovery science
Primarily describes nature through verifiable observations and measurements
Hypothesis driven science
Attempts to explain nature by studying questions drawn from observations made during "discovery science"
Hypothesis
A tentative question to a problem or question that is being asked
Hypothesis based science
Follows the five steps of the scientific method
Observations from other or results of earlier tests, questions about unclear aspects of the observations:how, when, why? Hypotheses or tentative explanations of a phenomenon: must be testable and must be falsifiable, predictions developed by the use of deductive reasoning (if...then) tests of predictions to determine if the predictions are supported or falsified
Properties of Life
Order, Evolutionary Adaptation, Response to the Environment, Regulation, Energy Processing, Growth and Development, Reproduction.
Three domains of life
Bacteria, Archaea, Eukarya
Domain Archaea
Any of various single-celled prokaryotes genetically distinct from bacteria, often thriving in extreme environmental conditions
Domain Bacteria
One of the three domains of life; contains prokaryotic cells that differ from archaea because they have their own unique genetic, biochemical, and physiological characteristics.
Domain Eukarya
Domain of all organisms whose cells have nuclei, including protists, plants, fungi, and animals
emergent properties
New properties that arise with each step upward in the hierarchy of life, owing to the arrangement and interactions of parts as complexity increases.