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30 Cards in this Set

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