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Vocab for chapter 7

Sections one and two

TermDefinition
Cells Basic unit of living organisms
Compound Light Microscope Uses a series of lens to magnify objects in steps
Cell Theory Three main ideas: 1. All organisms are composed of one or more cells 2. The cell is the basic unit of structure and organization of organisms 3. All cells come from preexisting cells
Electron Microscope Uses a beam of electrons to magnify an organism 500,000 its original size
Organelles Small specialized structures in a cell
Prokaryotes Cells that do not have membrane bound organelles
Eukaryotes Cells that do have membrane bound organelles
Nucleus Membrane bound organelle that controls cellure functions
Plasma membrane Flexible boundary between the cell and its enviroment
Selective permeability Process in which the membrane allows some molecules in or out of the cell while keeping others out
Phospholipid Gycerol backbone, two fatty acid chains and a phosphate group, forms a bilayer
Fluid mosaic model Model of the plasma membrane
Transport proteins More needed nutrients and unneeded wastes in or out of the cell
Created by: nathan.cornelius
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