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science Ch.2-section:1
n/a
12
Science
7th Grade
09/30/2011

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Term
cell membrane
Definition
protective outer covering of all cells that regulates the interaction between the cell and envierment
Term
cytoplasm
Definition
constantly moving gel-like mixture inside the cell membrane that contains heredity material and is the location of most cell life processes
Term
cell wall
Definition
rigid structure that encloses,supports, and protects the cells of plants,algae,fungi,and most bactria
Term
organlle
Definition
structure in the cytoplasm of a eukaryotic that can act as a storge site, process energy, move materials, or manufacture substances
Term
nucleus
Definition
organelle that controls all activites of a cell and contains heredity material made of proteins and DNA.
Term
chloroplast
Definition
green chlrophyll containing,plant-cell organelle that uses light energy to produce sugar from carbon dixide and water
Term
mitochondrion
Definition
cell organelle that breaks down food and releases energy
Term
ribosome
Definition
small cytoplasm structure on which cells make their own protein
Term
endoplasmic reticulum 
Definition
cytoplasmic orangelle that moves matrials around in a cell and is made up of a complex series of folded membrane;can be rough(with attached ribosomes) or smooth (without attached ribosomes)
Term
Golgi body
Definition
oranelles that package cell materials and transport them within cell or out of the cell
Term
tissue
Definition
group of simular cells working together to do one job
Term
organ
Definition
structure, such as the heart, made up the different types of tissue that all work together
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