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The Cell Structure
A short review of the cells organelles and their functions
12
Science
9th Grade
04/06/2011

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Term
Cell Wall
Definition
Outer boundary and protection; made of cellulose
Term
Cell Membrane
Definition
Regulates passage of materials in and out of the cell; selectively premeable
Term
Nucleus
Definition
Control center of all cell functions; contains nucleolus and DNA
Term
Cytoplasm
Definition
Organelle environment and site of chemical reactions; colloid - thick, gel-like
Term
Chloroplasts
Definition
Storage of chlorophyll and site of photosynthesis; common in leaf cells
Term
Leucoplasts
Definition
Storage of starch; common in root cells; food storage molecule
Term
Chromoplasts
Definition
Storage of red, yellow, brown pigments; common in fruits and flowers
Term
Central Vacuole
Definition
Water storage and internal support; "turgor pressure"
Term
Ribosomes
Definition
Produces proteins; made in nucleolus; some attached to ER
Term
Endoplasmic Reticulum (ER)
Definition
Internal transportation network; smooth and rough
Term
Mitochondria
Definition
Site of cellular respiration; produces energy
Term
Golgi Body
Definition
Packaging and export of secretions; ex. waxy, stickiness
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