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kkaur
CeLLs
17
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 microtubules 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 proccess of photosynthesis
Term
Cytoplasm
Definition
a jelly-like substance , composed mainly of water, occupying most of the space between cell membrane and the nucleus
Term
Endoplasmic Reticulum
Definition
a network of passageways in which chemical compounds are manufactured, transported, and proccessed
Term
Golgi Apparatus
Definition
a stack of membranes that collets , modifies, and packages chemical compound
Term
Lysosome
Definition
a small sac that contains digestive chemicals
Term
Mitochondria
Definition
organelkles that, using 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 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 and directs the cell's activities
Term
Organelle
Definition
a cell structure that performs a specific function
Term
Plasma Membrane
Definition
a double-layered membrane that surrounds the cell also regulates what enters and leaves the cell
Term
Plastid
Definition
small structure that can store food or pigment
Term
Ribosome
Definition
tiny structure where proteins are synthesized
Term
Vacuole
Definition
sac that stores water,nutrients, and other chemicals... The large vacuole in plant cells helps the cells maintain their shape
Term
Vesicle
Definition
small package of nutrients or proteins created by the Golgi apparatus
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