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Organelles
cell organelles
16
Biology
10th Grade
10/27/2010

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Term

Mitochondria

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Definition
Site of cellular respiration in the cell
Term

Chloroplasts

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Definition
Photosynthesis happens in this organelle found in plant cells
Term

Lysosomes

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Definition
Small, spherical shaped organelles that enclose hydrolytic enzymes that digest proteins, carbohydrates, lipids, DNA, RNA, old organelles, and viruses
Term

Nucleus

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Definition
Contains genetic information (chromatin, chromosomes)
Term

Nucleolus

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Definition
Inside nucleus, packages RNA and protein ribosomes
Term

Vacuoles

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Definition
Fluid filled organelles that store enzymes and metabolic wastes
Term

Rough and Smooth Endoplasmic Reticulum

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Definition
Intracellular highway, allows molecules to move from one side of the cell to the other. Rough ER is smooth ER with ribosomes attached
Term

Ribosomes

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Definition
Important role in the production of proteins
Term

Golgi Apparatus

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Definition
Packaging, processing, and secreting organelle. Modifies proteins for export
Term

Cytoskeleton (microtubule, microfilaments)

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Definition
Gives the cell structure to maintain its shape and size
Term

Cytosol

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Definition
Liquid bathing organelles
Term

Cytoplasm

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Definition
Everything but the nucleus
Term

Cell Membrane

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Definition
Phospholipid bi-layer, controls import and export of items in cell
Term

Cell Wall

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Definition
Found in plant cells only, made of long chains of cellulose, very rigid, helps support and protect
Term

Cilia and Flagellum

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Definition
Hair like on surface, help movement. Short many, cilia. Large few, flagellum
Term

Microvillus

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Definition
Projections from cell membrane, increase surface area for cell for absorption
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