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

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Term
Cell Wall
Definition
the rigid , pouros outer layer of a plant cell.
Term
Cenrtiole
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 process of photosynthesis
Term
Cytoplasm
Definition
a jelly like substance, composed mainly of water, occupying most of the space between the cell membrane and the nucleus.
Term
Endoplasmic Reticulum
Definition
a network of passageways in which chemicas compounds are manufactured, processed, and transported.
Term
Gogi Apparatus
Definition
a stack of membranes that collects , modifys and packages chemical compounds.
Term
Lysosome
Definition
a small sac that contians digestive chemicals.
Term
Mitochondria
Definition
organelles that, using oxegon, convert nutrients into energy that can be used by the cell
Term
Nuclear Envolope
Definition
a double layered membrane that surronds and protects the nucleus.
Term
Nucleolus
Definition
a small body in the4 nucleus where ribosomes are synthesized.
Term
Necleus
Definition
a round body in the center of the cell that contians 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 called the cell membrane, it regulates what enters and leaves the cell
Term
Plastid
Definition
small structer that can store food(leucoplast)or pigment(chromoplast).
Term
Ribosome
Definition
tiny structure where protiens are synthesized
Term
Vacuole
Definition
sac that stores water,nutrients,and other chemicals.The large vacuole in plant cells helps the cells mantain their shape
Term
Vesical
Definition
small pakage of nutreints or proteins created by the Golgi Apparatus
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