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Looking Inside Cells
N/A
15
Science
7th Grade
12/04/2008

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Term
Organelles
Definition
Tiny cell structures.
Term
Cell Wall
Definition
A rigid layer of nonliving material that surrounds the cells of plants and some other organisms.
Term
Cell Membrane
Definition
Controls what substances come into and out of a cell.
Term
Nucleus
Definition
The cell's control center, directing all of the cell's activities.
Term
Nuclear Envelope
Definition
The membrane surrounding a nucleus.
Term
Chromatin
Definition
Intstructs the cell's functions.
Term
Nucleolus
Definition
Where ribosomes are made.
Term
Cytoplasm
Definition
The region between the cell membrane and nucleus.
Term
Mitochondria
Definition
The powerhouses of the cell because they convert energy in food molecules to energy the cell can use to carry out its functions.
Term
Endoplasmic Reticulum
Definition
Passageway that carries proteins and other materials from one part of the cell to another.
Term
Ribosomes
Definition
Function as factories to produce proteins.
Term
Chloroplasts
Definition
Capture energy from sunlight and use it to produce food for the cell.
Term
Vacuole
Definition
Stores water, food, waste products and other materials.
Term
Lysosomes
Definition
Break down food particles and worn out cell parts.
Term
Golgi Bodies
Definition
Receive proteins and other newly formed materials from the endoplasmic reticulum, package them, and distribute them to other parts of the cell.
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