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ogt list 17
ogt lists
20
Biology
10th Grade
02/20/2009

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Term
light reaction
Definition
the reactant in photosynthesis that absorbs light and produces ATP, NADPH, and oxygen
Term

limiting factor

Definition
the reactant that stops the reaction when it is used up.
Term
Linnaeus
Definition
the scientist who developed the classification system for living organisms.
Term
liquid
Definition
a flowing substance with a definite volume, but no definite shape.
Term
liquid crystal
Definition
   a substance that loses its crystal organization in only one or two dimensions. 
Term
lithosphere
Definition
the layer of the earth made of the crust and upper mantle
Term
 litmus
Definition
     an indicator that turns red in acid and blue in base. 
Term
logistic growth
Definition
   a model of population growth where birth and death rates vary with population size but are equal at the carrying capacity. 
Term
longitudinal wave
Definition
     a wave that vibrates parallel to the direction of travel.
Term
lysosome
Definition
 an organelle with enzymes for digesting food, wastes, and foreign invaders.
Term
magma
Definition
  the melted rock under the earth surface.
Term
magnetic confinement
Definition
the use of magnetic fields to contain the charged particles formed in nuclear fusion without cooling them.
Term
magnetic field
Definition
the region around a magnetic pole or around a moving charged particles with magnetic influence.
Term
magnetism
Definition
a condition characterized by the presence of magnetic forces that can attract or repel.
Term
main sequence stars
Definition
the small red stars that make up 90%of all stars.
Term
mantle
Definition
the layer inside the earth between the core and the crust
Term
mass
Definition
the amount of matter in an object
Term
mass number
Definition
the total number of neutrons and protons in an atom.
Term
matter
Definition
  anything that takes up space and has mass.
Term
 mean
Definition
the average of the data.
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