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11
Biology
9th Grade
02/22/2011

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Term
cell membrane
Definition
a doubled layer of phopholipids with proteins that surrounds the cell.
Term
cell wall
Definition
to provide support a stiff structure made of complex sugars that surrounds plants, fungi, algae, and other bacterials.
Term
cytoplasm
Definition
the entire contents of a living cell, except for the nucleus and large vacuoles.
Term
centrioles
Definition
Term
nucleus
Definition
the membrane- enclosed organelle of a eukaryotic cell that contains most of the cells DNA and controls the cells functions.
Term
nucleolus
Definition
Term
nuclear membrane
Definition
Term
mitochondria
Definition
membrane- enclosed organelles that are the main site of energy production.
Term
chloroplasts
Definition
a double-membrane orgeanelle in plant and some protist cells that is the main site of photosynthesis.
Term
vacuole
Definition
a membrane-enclosed, fluid-filled sac within plants and animal cells that mainly functions in the storage of water, chemicals, or waste.
Term
ribosomes
Definition
an organelle of a cell that is the site of protein production.
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