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Vocabulary
Science vocab
13
Science
7th Grade
01/06/2010

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Cards

Term
Cell Theory
Definition
A major theory of life science: 1. All organisms are made up of one or more living cells. 2.Cells are the basic unit, structure, and function in all living things. 3. All cells come from cells that already exist
Term
Cell Membrane
Definition
A selectively permeable outer boundary of a cell that allows food and oxygen to move into the cell and wastes to leave it
Term
Chromatin
Definition
The heredity material inside the nucleus
Term
Compound Light Microscope
Definition
an instrument that used light and convex lenses to magnify objects
Term
Electron Light Microscope
Definition
an instrument that bends beams of electrons in a magnetic field to view tiny objects
Term
Cytoplasm
Definition
a gel-like substance inside the cell and outside the nucleus
Term
Organelles
Definition
the structure within the cytoplasm of eukaryotic cells
Term
Endoplasmic Reticulum
Definition
a fold membrane that moves material around inside the cell
Term
Ribosomes
Definition
a cell organelle that produces proteins
Term
Golgi Bodies
Definition
stacks of membrane covered sacs that package and move proteins to the outside of the cell
Term
Mitochondria
Definition
breaks down food in the cell and releases energy for the body to use
Term
Lysosomes
Definition
an organelle that contains chemicals that digests wastes and worn-out organelles and cells
Term
Nucleus
Definition
The control center of the cell
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