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biology terms 3

QuestionAnswer
cell the basic units of living organisms.
compound light microscope uses a series of lenses to magnify objects in steps
electron microscope This microscope uses a beam of electrons instead of light to magnify structures
cell theory All organisms are composed of one or more cells The cell is the basic unit of structure and organization of organisms. All cells come from preexisting cells.
eukaryote containing membrane-bound organelles
organelle small, specialized structures all cells have them
prokaryote do not have membrane- bound organelles
nucleus the central membrane- bound organelle that manages or controls cellular functions.
cell wall a fairly rigid structure located outside the plasma membrane that provides additional support and protection.
chromatin The master set of directions for making proteins
nucleolus makes ribosomes. prominent organelles
cytoplasm is the clear, gelatinous fluid inside a cell
ribosomes are the sites where the cell produces proteins according to the directions of DNA.
endoplasmic reticulum the site of cellular chemical reactions
Golgi apparatus modifies the proteins.
lysosome are organelles that contain digestive enzymes.
vacuole for temporary storage of materials.
Created by: ridgeway
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