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efuller
cells
19
Science
7th Grade
01/22/2010

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Term
cell wall
Definition
the rigid,porous outer layer of a plant cell.
Term
centriole
Definition
a bundle of microtubles that helps organize the movement of chromosomes during cell division
Term
chloroplast
Definition
an organelle that converts the radiant energy of the sun into chemical energy through the process of photosynthesis
Term
cytoplasm
Definition
a jelly like substance, composed mainly of water, occupying most most of the space between the cell membrane & the nucleus
Term
E.R.
Definition
A network of passegeways in which chemical compounds are manufactured, processed and transported.
Term
golgi bodies
Definition
a stack of membranes that collects, modifies, and packages chemical compounds.
Term
lysosome
Definition
a small sac that contains digestive chemical
Term
mitochondria
Definition
organelles that, using oxygen,convert nutrients into energy that can be used by the cell
Term
nuclear evlelope
Definition
a doubled layer membrane that surrounds & protects the nucleus
Term
nucleolus
Definition
a small body in the nucleus where ribosomes are synthesized
Term
nucleus
Definition
a round body in the center of the cell that contains DNA & directs the cell's activites
Term
organelle
Definition
a cell structure that performs a specific function.
Term
plasma membrane
Definition
a doubled layered membrane that surrounds the cell.also called the cell membrane, it regulates what enters and leaves the cell.
Term
plasma membrane
Definition
a doubled layered membrane that surrounds the cell.also called the cell membrane, it regulates what enters and leaves the cell.
Term
plastid
Definition
small structure that can store food.(lucoplast) or pigment(chromoplast)
Term
plastid
Definition
small structure that can store food.(lucoplast) or pigment(chromoplast)
Term
ribosome
Definition
tiny structure where proteins are synthesized.
Term
vacuole
Definition
sac that stores water,nutrients,and other chemicals. the large vacuole found in plant cells helps the cell maintain their shape
Term
vesicle
Definition
small package of nutrients or proteinscreated by the golgi bodies
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