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Chapter 4
Cells-Cytology
14
Biology
9th Grade
10/16/2006

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Term
Cell
Definition
structual,functional, anbd reproductive unit of life
Term
cytoplasm
Definition
collide, inside cell
Term
Cell wall
Definition
*Shape and support
* Cellulose
*Polyssachride(carb)
* Nonliving-secreted(production of a useful product)
*porpse(has holes) (holes dont change size)
Term
Cell membranes
Definition
*Plasma-living thing
*Phospholipid-arranged in two layers(proteins)
*regulates what passes in?out of the cell
*Selectively permeable
Term
Chromosomes
Definition
dna is coiled around protein(seen when cells divide)
Term
Chromotin
Definition
partically uncoiled chromosomes that store DNA and protein
Term
Vacule
Definition
*stores cells liquids (waters+solvents of water)
* helps keep cells firm
*phospholipid/proteins
*selectively premeable
*living
Term
Nucleus/Nuclei
Definition
* Control center of the cell
*living, selectively permeable, phospholipid
Term
nuclueolus/nucleoli
Definition
make/assemble ribosomes(store rna)
Term
nucleoplasm
Definition
cytoplasm inside cell
Term
Smooth/rough endoplasmic reticulum
Definition
endo-inside plasm:cytoplasm reticulm: coiled throughout whole cell

* membrane network(hollow in middle)(highway)

*difference between smooth and rough rough contains ribosomes
Term
ribosomes
Definition
make protein
Term
Mitochondrion
Definition
Respiration Reticulum- c6h12o6+ 6o2--> 6CO2 + 6h2o + atp
Term
Cristae
Definition
fols inside mitochondrions: provide surface are for chemical reactions
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