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Cell Structures
the different structures of animal and plant cells
13
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7th Grade
12/04/2008

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Term

NUCLEUS

Definition

Directs all of the cell's activities, including reproduction.

Term
Cytoplasm
Definition
A gel-like liquid in which many diferent organelles are found.
Term
Endoplasmic Reticulum
Definition
A network of passageways that carries materials from one part of cell to another.
Term
Cell Wall
Definition
Only found in plant cells. They are stiff walls surrounding the membrane that gives the cell a rigid, boxlike shape.
Term
Chloroplasts
Definition
Only in plant cells: Organelles that capture energy from the sunlight and use it to produce food for the cell.
Term
Vacuole
Definition

A thin sac that stores water, food, waste products, and other materals.

Term
Cell Membrane
Definition
Protects the cell and regulates what substances enter and leave the cell.
Term

Mitochondrion

Definition
Converts energy in food molecules to energy the cell can use to work or carry out its functions.
Term
Golgi Body
Definition
Distributes proteins and other materials from the endoplasmic reticulum to other parts of the cell.
Term
Ribosomes
Definition

Organelles that produces proteins that are either attached to the endoplasmic reticulum or swimming in the cytoplasm.

Term
Lysosomes
Definition

Organelles that contains chemicals to break down food particles and worn out cell parts.

Term
Chromatin
Definition
Strands in the nucleus that contains genetic material. It directs all the cell movements.
Term
Nucleolus
Definition
A place inside the nucleus in which ribosomes are made.
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