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29 Cards in this Set

  • Front
  • Back
organism
any living thing
biology
the study of life
organization
the high degree of order within an organism's internal and external parts and in its interactions with the living world
cell
the smallest unit that can carry out all of life's processes
unicellular
organisms that are made up of one cell
multicellular
organisms that are made up of many cells
3 requirements for a cell
1. covered by a membrane
2. contains all genetic info necessary for replication
3. able to carry out all cell functions
organs
structures that carry out specialized jobs within an organ system
tissues
groups of cells that have similar abilities and that allow an organ to function
organelles
tiny structures within a cell that carry out all functions for the cell to stay alive
biological molecules
the chemical compounds that provide physical structure and that bring about movement, energy use, and other cellular functions
stimulus
a physical or chemical change in the internal or external environment
response
an organism's reaction caused by a stimulus to adapt to meet that organism's needs
homeostasis
the maintenance of a stable level of internal conditions even though environmental conditions are changing constantly
metabolism
the sum of all the chemical reactions that take in and transform energy and materials from the environment
development
the process by which an organism becomes a mature adult
gene
a short segment of DNA that contains instructions for a single trait of an organism
sexual reproduction
hereditary information combines from 2 organisms of the same species
asexual reproduction
hereditary information from just one organism is copied and replicated in a brand new organism, thus the original organism and the new organism are genetically the same
evolve
to change through time
list 8 characteristics of life
1.organization
2.cells
3.response to stimuli
4.homeostasis
5.metabolism
6.growth and development
7.reproduction
8.change through time/evolve
list in order the levels of organization from largest to smallest
organism--> organ system--> organ--> tissue--> cell--> organelle--> molecule--> atom
name the 3 domains of life
1.bacteria
2.archaea
3.eukarya
name the 6 kingdoms of life
1.animalia
2.plantae
3.fungi
4.protista
5.archaea
6.bacteria
ecology
the branch of biology that studies organisms interacting with each other and the environment
ecosystems
communities of living species and their physical environments
evolution
or descent with modification, the process in which the inherited characteristics within populations change over generations
natural selection
organisms that have certain favorable traits are better able to survive and reproduce successfully than organisms who lack these traits
adaptation
traits that improve an individual's ability to survive and reproduce