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Vocab: cell structure&function
Mrs. King (2)
15
Biology
9th Grade
10/05/2007

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Term
cell wall
Definition
strong supporting layer around the cell membrane in plants, algae, and some bacteria
Term
cell membrane
Definition
thin flexable barrier around a cell
Term
nucleolus
Definition
small dense region within most nuclei in which the assembly of protons begins
Term
Nuclear membrane
Definition
layer of two membrane that surrounds the nucleus of a cell
Term
centriole
Definition
one of two tiny structures located in the cytoplasm of animal cells near the nuclear envelope
Term
Chitin
Definition
complex carbohydrate that makes up the cell walls of fungi
Term
Cytoplasm
Definition
material inside the cell membrane
-not including the nucleus.
Term
Prokaryote
Definition
a single celled organism lacking a nucleus
Term
Eukaryote
Definition
organism whose cells contain nuclei
Term
cell
Definition
collection of living matter enclosed by a barrier that seperates the cell from its surroundings
Term
DNA
Definition
nucleic acid that contains the sugar deoxyribose
-(deoxyribonucleic acid)
Term
chromosome
Definition
threadlike structure within the nucleus containing genetic information that is passed from one generation of cells to the next.
Term
Cellulose
Definition
carbohydrate found in plant cell walls
Term
rough endoplasmic reticulum
Definition
covered in ribosomes; modifies and transports proteins throughout the cell
Term
Smooth endoplasmic reticulum
Definition
not covered in ribosomes; makes lipids
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