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30 Cards in this Set
- Front
- Back
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diaphragm
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used to vary intensity and amount of light that is projected to the slide
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hypertonic solution
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solution w/ a higher concentration of salt
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hypotonic solution
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solution w/ a lower concentration of salt
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isotonic
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2 solutions w/ the same concentration
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concentration gradient
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the graduated difference in concentration
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diffusion
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movement of particles through a membrane
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solute
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substance being dissolved
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solvent
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anything that dissolves the solute
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solution
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when anything dissolves into something else
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passive transport
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movement of a chemical substance across a cell membrane
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dynamic equilibrium
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state of balance achieved by 2 forces in motion
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differential heating
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difference in how land and water surfaces absorbs heat
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greenhouse affect
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the rise in temperature the earth experiences because certain gases trap energy from the sun
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primary succession
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w/out soil
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secondary succession
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w/ soil
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3 main climate zones
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temperate, polar and tropical
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polar zone
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66.5 and 90 degrees north and south lattitude, where sun rays hit earth at a very low angle
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cell theory
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1-All living organisms are composed of one or more cells.
2-Cells are the most basic unit for function and structure of all organisms. 3-All cells come from cells that already exist. |
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Robert Hooke
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first discovered the cell in 1663
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Anton van Leeuwenhoek
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The first man to witness a live cell under a microscope
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DNA
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Deoxyribonucleic acid
contains the genetic instructions for the development and function of living organisms |
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Prokaryotes
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genetic material is not membrane-bound
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eukaryotes
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have true nuclei containing their DNA
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temperate zone
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between polar zones and the tropics. Temperature ranges from hot to cold, depending on the season
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tropical zone
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23.5 and 23.5 degrees north and south. recieve direct or near dirct sunlight
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competitive exclusion principle
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two species that compete for the exact same resources cannot stably coexist
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commensalism
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where one benefits and other is neutral
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symbiosis
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when two species live close together
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density dependent
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competiton, predation, parasitism/disease
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density independent
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extreme weather, natural disasters, human disturbances
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