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32 Cards in this Set
- Front
- Back
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Matter |
any substance that occupies space and mass |
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elements |
unique forms of matter with specific chemical and physicalproperties that cannot be broken down into smaller substances by ordinary chemical reactions |
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5 elements common to all living thigns |
oxygen carbon nitrogyen hydrogen and phosphorous |
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atom |
smallest unit of matter that retains all chemical properties of an element. |
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nucleus |
center of atoms, protons and neutrons |
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molecules |
two or more atoms join together through chemical bonds |
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isotopes |
different form of an element that have the same number of protons but a different number of neutrons |
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hydrocarbons |
organic molecules consisting entirely of carbon and hydrogen. many covalent bonds, lots of energy |
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cellular respiration |
energy released from glucose |
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ATP |
adenosine triphosphate(energy) |
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lipids |
fats, oils. hydrophobic |
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denaturing of proteins |
changes in temp, pH, and exposure and chemicals change the shape of a it and change function |
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most important macromolecules for life? |
nucleic acids |
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population |
individuals of the same species in a specific area |
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community |
sum of populations inhabiting an area |
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ecosystem |
all the living parts of an area including nitrogen, soil, or water |
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3 types of ecosystems |
terrestrial, freshwater, ocean water |
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biomes |
groups of terrestrial ecosystems |
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IPAT system |
I=PxAxT Impact on env.= size of human Pop x Affluence x Tech |
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precautionary principle |
better safe than sorry |
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population size variable |
N |
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exponential growth model |
G= r x N |
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G variable |
population growth rate |
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r variable |
per capita rate of increase |
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if r is negative |
population is decreasing |
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if r is positive |
pop is increasing |
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r is zero |
unchanging population |
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Type 1 survivorship |
highest probability of surviving to old age |
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Type 2 survivorship |
species have an even chance of dying at any age |
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Type 3 survivorship |
high chance of dying young |
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density dependent factors |
env factors that act affect birth and death |
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logistic growth model |
G= r x N (1- N/K) |
