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cells
i hate studying cells so much!!!
16
Science
7th Grade
11/03/2008

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Term
Nucleus
Definition
The structure that directs all of the activity for a cell.(control center.)
Term
Chromatin
Definition
Long strands of DNA in a cell's nucleus.
Term
Endoplasmic Reticulum(ER)
Definition
A folded membrane that moves materials around a cell.
Term
Cell Membrane
Definition
The structure that forms around the outer boundary of the cell and allows only cetain materials to move into and out of the cell.
Term
Cytoplasm
Definition
The Gel-like material inside the cell membrane.
Term
Organelles
Definition
The structures within the cytoplasm of eukaryotic cells.
Term
Chloroplasts
Definition
Organelles in a PLANT CELL in which light energy is changed into chemical energy in the form of sugar called glucrose.
Term
Tissue
Definition
Groups of similar cells that do the same sort of work.
Term
Organ
Definition
A structure made up of different types of tissues that work together to do a particular job.
Term
Organ System
Definition
A group of organs working together to do a certain job.
Term
Lysosomes
Definition
In the cytoplasm, the organelle that digests waste and worn-out cell parts.
Term
Vacuoles
Definition
The storage area of a cell. Stores food, water, or waste products.
Term
Cell Wall
Definition
A rigid structure outside of the cell membrane that supports and protects the PLANT CELL.
Term
Ribosomes
Definition
Small grain like structures found on the ER that make protein.
Term
Golgi Bodies
Definition
Membrane-covered sacs that move proteins outside of the cell. The packaging and secreting organelle.
Term
Mitochondria
Definition
Orgenelles where food molecules are broken down and energy is released.
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