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18 terms

ORGANELLES WHAT THEY ARE

STUDY
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Endoplasmic reticulum rough and smooth
Network of tubes or membranes
smooth without ribosomes
rough with embedded ribosomes
Connects to nuclear envelope and cell membrane
Ribosome
small bodies free or attached to ER
cell wall
• Outer layer
• Rigid & strong
• Made of cellulose
Mitochondrian
• Double membrane
• Inner membrane folded into cristae
cell membrane
• Plant - inside cell wall
• Animal - outer layer; cholesterol
• Double layer of phospholipids with proteins
• Selectively permeable
nucleus
• Holds DNA
nuclear envelope
• Surrounds nucleus
• Double membrane
• Selectively permeable
cytoplasm
• Clear, thick, jellylike material (cytosol)
• Organelles found inside cell membrane
• Contains the cytoskeleton fibers
vacuole
• Fluid-filled sacs
• Largest organelle in plant cells
lysosome
enzyme
chloroplasts
•• Green, oval containing chlorophyll (green pigment)
• Double membrane with inner membrane modified into sacs called thylakoids
nucleolus
Found inside the cell's nucleus
golgi apparatus
• Stacks of flattened sacs
cilia
• Short, but numerous
flagellum
• Long, but few in number
centrioles
• Paired structures near the nucleus
• Made of a cylinder of microtubule pairs
cytoskeleton
• Made of microtubules & microfilaments
peroxisome
enzyme