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BIO

Cells

Question
Prokaryotic cells simple, no nucleus, unicellular
Eukaryotic cells plant and animal, more complex, usually multicellular, nucleus with membrane bound organelles
cell membrane regulates what goes in and out of cell
cell wall rigid outer layer in plant cells made of cellulose, protects and provides structure
cytoplasm fluid in cell
mitochondria makes energy, converts food energy to chemical energy (ATP)
chloroplast found in plant cells, converts light into energy
ribosome makes protein
Endoplasmic reticulum (rough) rough - dotted with ribosomes, modifies and packages proteins
endoplasmic reticulum (smooth) no ribosomes, makes lysosomes, synthesizes lipids
golgi apparatus modifies, sorts and ships molecules within the cell
lysosome breaks down materials within the cell, digests
vacuoles storage, very large in plant cells
vesicle transports molecules within and in and out of cell
passive transport moves molecules high --> low, no energy required
active transport moves molecules low ---> high, requires ATP (energy)
equilibrium both sides have roughly same amount, molecules diffuse until they reach equilibrium
exocytosis export of bulky molecules, moves them out of cell
endocytosis import of large molecules, moves them into cell
osmosis movement of water, type of passive transport
tonicity the ability of a solution to cause a cell to gain or lose water
isotonic concentration of solution is the same inside and outside the cell
hypertonic there is a higher concentration in the solution outside the cell, the cell will move water OUT and shrink
hypotonic there is a higher concentration in the solution inside the cell, the cell will move water IN and swell
Created by: JSheahan1
 

 



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