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Organelles
N/A
19
Science
9th Grade
05/12/2009

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Term
Plasma Membrane
Definition
Thin outer boundary of a cell that regulates the traffic of chemicals.
Term
Nucleus
Definition
Where the cell's genetic information, in the form of DNA is located.
Term
Nucleolus
Definition
Ball-like mass of fibers in and granules in a cell nucleus.
Term
Cytoplasm
Definition
Region of a cell between the nucleus and the plasma membrane
Term
Mitochondria
Definition
Where cellular respiration occurs.
Term
Golgi Apparatus
Definition
Cellular organelle that modifies, stores, and routes cell products.
Term
Lysosome
Definition
Membrane-bound sac that contains digestive enzymes.
Term
Ribosome
Definition
Cluster of proteins and nucleic acids that constructs proteins in a cell.
Term
Vacuole
Definition
Membrane bound sac that buds from the endoplasmic reticulum.
Term
Chloroplast
Definition
Found in plant cells and certain unicellular organisms where phtosynthesis takes place.
Term
Cell Wall
Definition
Strong wall that protects the cell and maintains its shape.
Term
Centriole
Definition
Form spindle fibers to form chromosomes during cell division.
Term
Cilium
Definition
Short structures that move a cell through its surroundings.
Term
Flagellum
Definition
Long, thin, whip-like structures that enable some cells to move.
Term
Pseudopod
Definition
Temorary extension of a cell's cytoplasm and plasma membrane.
Term
Nuclear Envelope
Definition
A pair of membranes that surrounds the nucleus.
Term
Smooth Endoplasmic Reticulum
Definition
A network of membranes within a cell's cytoplasm.
Term
Rough Endoplasmic Reticulum
Definition
A network of membranes within a cell's cytoplasm covered with ribosomes.
Term
Cytoskeleton
Definition
A network of fibers extending throughout the the cytoplasm.
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