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cells
cell structure
17
Science
7th Grade
01/22/2010

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Term
cell wall
Definition
the riged porous outer layer of a plant cell
Term
centriole
Definition
a bundle of mocrotubulesthat help organize the movement of chromosomes during cell division
Term
chlorloplast
Definition
a organelle that converts radiant energy from the sun into chemical energy through the process of photosynthisis
Term
cytoplasm
Definition
a jelly like substance containing mostly water occupying most of the space between the cell membrane and the nucleus
Term
endoplasmic reticulum
Definition
a network of passage ways in which chemical compounds are manufactured,processed,and transported
Term
golgi bodie
Definition
a stack of membranes that stack,modifies and pakageschemical compounds
Term
lysosme
Definition
a small sac the contains digestive chemicals
Term
mitocondria
Definition
organelles that use oxygen,convert nutrients into energy that can be used by the cell
Term
nuclear envelope
Definition
a double layered membrane that surrounds and protects the cell
Term
nucleolus
Definition
a small body in the nucleus where ribosomes are synthisized
Term
nucleus
Definition
a round body in the center of the cell that contains DNA and directs the cells activity
Term
organelle
Definition
a cell stucture that performs a specific function
Term
Plasma membrane
Definition
a doublelayred membrane that surronds the cell. also called the cel membrane it regulates what goes in and out of the cell
Term
plastid
Definition
small structure that can store food(leucoplast) or pigments (chromoplast)
Term
ribosomes
Definition
tiny stucture wheren proteins are synthisized
Term
vacuole
Definition
sac that stors water nutrients and other chemicals. the large vacuole in the plant cell helps maintain shape
Term
vesicle
Definition
small package of nutrients or protiens created by the golgi body
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