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CellTheory
Cell structure and function
16
Science
9th Grade
09/12/2009

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Term
mitochondrion
Definition
power house of the cell
Term
nucleus
Definition
the control center of the cell
Term
centriole
Definition
one of the two parts of the centrosome; forms microtubules of the spindle fibers
Term
nucleolus
Definition
organelle inside the nucleus that produces ribosomes
Term
ribosomes
Definition
sites of protein synthesis; where proteins are assembled
Term
protoplasm
Definition
the fluid portion of a cell which contains organelles
Term
rough endoplasmic reticulum
Definition
transportation network of microtubules that also contain ribosomes
Term
smooth endoplasmic reticulum
Definition
network of microtubules that lack the presence of ribosomes
Term
cytosol
Definition
protoplasm between the cell membrane and the nuclear membrane excluding the organelles
Term
chromatin
Definition
genetic material in the nucleus
Term
cytoplasm
Definition
the fluid portion of the cell between the cell membrane and the nuclear membrane including the organelles
Term
lysosomes
Definition
the digestive organelles
Term
vacuoles
Definition
storage organelles
Term
Golgi complex
Definition
organelle responsible for packaging and secreting proteins
Term
chloroplast
Definition
organelle in plant cells that contain green pigment
Term
cytoskeleton
Definition
microfilaments and microtubules that provide structure, protection, and movement
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