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bio words 7.1-2
new vocab
6
Biology
9th Grade
10/01/2007

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Term
Cell:


Cell theory:
Definition
The most basic unit of any and all living organisms.

That all organisms are made of one or more types of cells,are the most basic part of the organism and are formed from preexisting cells.
Term
Compound light microscope:

Electron microscope:
Definition
This microscope uses a series of repeating lenses to magnify an object.

This microscope uses a beam of electrons to magnify an object up to 500,000.
Term
Prokaryotes:


Eukaryotes:
Definition
Cells lacking a internal membrane (nucleus)

Cells that have a internal membrane (nucleus)
Term
Organelles:


Nucleus:
Definition
Structures inside a eukaryote cell that perform specialized actions.

An organelle that acts like the brain of the cell.
Term
Plasma Membrane:


Selective permeability:


Transport Proteins:
Definition
The boundary between a cell and its environment.

The cell allows some molecules into the cell while others are stopped.

They allow and regulate the selective permeability.
Term
Homeostasis:


Phospholipid:

Fluid mosaic model:
Definition
The maintaining of the cells internal environment.

A lipid with a phosphate attached to them.

The model of a plasma membrane.
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