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31 Cards in this Set

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study of life
biology
highest degree of order within an organisms internal and external parts and in its interactions with the living world
organization
smallest unit that can perform all life's processes.
cell
made up of one cell
unicellular
structures that carry out specialized jobs within an organ system
organ
groups of cells that have similar abilities and allow an organ to function
tissues
tiny structures that carry out functions necessary for the cell to stay alive
organelles
chemical compounds that provide physical structure and that bring about movement
biological molecules
What makes up an organism?
atom-bilogical molecule-organelle-celle-tissue-organ-organism
What are the seven characteristics of life?
organization, presence of one or more cells, response to stimulus, homeostasis, metabolism, growth and development, reporduction, and change through time.
maintenance of a stable level of internal conditions even through environmental conditions and constantly changing
homeostasis
sum of all the chemical reactions that take in and transform energy and materials from the environment.
metabolism (eg photosynthesis)
formation of two new cells froman existing cell
cell division
process by which an organism becomes a mature adult
development
producing new organisms
reproduction
a short segment of DNA that contains a single trait of an organism
gene
variety of life
diversity
features all things have in common
unity
tree of life
lineage
what are the three domains of life?
bacteria, archaea, eukarya
what are the six major kingdoms
animalia, plantae, fungi, protista, archaea, bacteria
the branch of biology that studies organisms interacting with each other and the environment
ecology
communities of living species and their physical environments
ecosystems
favorable traits survive and reproduce
natural selection
traits that improve an individual's ability to survive and reproduce.
adaptations
what is the scientific method?
observation, hypothesis, prediction, experiment analysis, conclusion
a normal standard to compre results of the experimental group
control group
one factor is changed from the control
experimental group
the manipulated variable that is different for each group
independent variable
responding variable or what is measured
dependent variable
a highly tested, generally accepted principle that explains a large number of observations and experimental data.
theory