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41 Cards in this Set
- Front
- Back
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Biology is the .....
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study of life
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all matter is formed of _______
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elements
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T/F : an element can't be chemically broken down
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true
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a/an _____ is the smallest paricle of an element retaining the properties of an element
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atom
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Atoms combine to form _______
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molecules
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Molecules provide the building blocks for ____
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cells
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the smallest unit of life are
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cells
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Prokaryotic Cells have ______
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no nucleus (PRO=NO/before)
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Eukaryotic cells have _____
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a nucleus (EU=WITH)
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in multicellular forms cells combine to form ______--
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tissues
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Tissues combine to form ____
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organs
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_______ organisms are composed of multiple organ systems
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multicellular
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organisms of the same type capable of interbreeding ___
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species
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interacting populations make up a _____
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community
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a community and its enviroment is an _____
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ecosystem
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______ are uniform in space and time
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Natural laws
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___________ allows us to accept obsevations of other humans as reliable
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common perception
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Scientific method (4 steps)
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observe, hypothesis, test, conclusion
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scientific experimentation tests the assertion that a single ____ causes a particular observation
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variable
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untested variables
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control
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Experiment w/jar & maggots (spontaneous generation)
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Redi's experiment
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tentative (definition)
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could be changed
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fleming accidentally discovered
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penicillium/penicillin
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a scientific theory is a __________ for important natural phenomena
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general explanation
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a generalization is created from many observations (individual --> general)
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inductive reasoning
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generating hypotheses based on a well-suppored generalization (general --> individual)
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deductive reasoning
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evolution arises as a consequence of 3 natural processes:
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-genetic variation
-inheritance -natural selection |
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mutation is essential for ____
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evolution
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organisms that best meet _____ leave the most offspring
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environmental challenges
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_____ are structures, physiological process, or behaviors that aid in survival and reproduction
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adaptations
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_____: the quality that distinguishes a vital and functioning being from a dead body
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life
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____and ___ are required to maintain organization, to grow and to reproduce
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materials ; energy
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______ is the sum total of all the chemical reactions needed to sustain an organisms life
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metabolism
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all energy that sustains lifecomes direct or indirectly from the ____
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sun
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the cell theory states that the cell is the basic ____ of ___
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basic of life
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___ provide info to direct the cells
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genes
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a ________ that encloses the fluid cytoplasm and organelles from the outside world
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plasma rifle/membrane
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organisms can be grouped into 3 domains :
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-bacteria
-archaea -Eukarya |
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Domain Eukarya's 4 kingdoms
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-fungi
-plantea -animalia -protists |
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Self feeders
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autotrophs
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other-feeders
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heterotrops
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