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Glossary of Biology Flash Cards: Cells and Cell Organelles

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Light Microscope
Used to view living organisms. Are mobile.
Electron Microscope
Theese are very expensive and kill organisms. Can not move. Very high magnification.
Prokaryotic
Cells without a true nucleus and other compartments. Ex. Bacteria
Eukaryotic
Cells with a true nucleus and other organelles.
Organelle
Structures that carry out specific activitie in a cell
Cell Membrane
Phospholipid bilayer. Regulates what enters and eist the cell.
Nucleus
Control center of the cell. Contins DNA
Nuclear Envelope
Surrounds the nucleus
Nucleous
Found inside the nucleus. Is the site where ribosomes are constructed.
Mitochondria
"powerhouse" of the cell. Makes energy (ATP). Contains its own circular DNA.
Ribosomes
Manufacture Proteins. Consists of two subunits. Free floating or on ER.
Rough Endoplasmic Reticulum
Has Ribosomes and is responsible for the production of protein
Smooth Endoplasmic Reticulum
No ribosomes and is rsponsible for the movement of lipids
Golgi Body
The "post office". Packages and sends proteins
Vesicles
Small sac that transport substances
Lysosomes
Digestive ceter of the cells.
Contains powerful enzymes.
Vacuoles
liquid filled space. Stores food, waste, and water.
Cytoplasm
Material between the nucleus and outer-boundry of a cell. In constant motion- cytoplasmic streaming.
Cell Wall
Outer most part of a plant cell. Supports and protect the cell.
Chloroplast
Allows for Photsynthesis. Contains Chlorophyll.
Microtubules
Long thin tubes. Support and movements of organelles.
Centrioles
Cylindrical Bodies in animal cells. Aids in cell division.
Cillia
Short hair like structures.
Flagella
Long Whiplike structures.
Homeostasis
Maintain consistent state of living.
Selectivley Permeable
Property of membrane to allow only certain materials to pass through.
Phospholipid bilayer
Two layers of phosphorous heads and lipid tails.
Hydrophobic
Lipid tails are "water fearing"
Hydrophylic
Phosphorus Head is water loving
Cholesterol
Fluidity

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