Eukaryotic cells have various smaller membrane bound regions inside them, which may have started as symbionts. Typical organelles are
► chloroplast - where light energy is converted into molecular energy in plants
► lysosome - where proteins are digested
► cell nucleus
► - where the proteins due to be released from the cell are assembled
► peroxisomes (in animals) and glyoxisomes (in plants) - where fatty acids and amino acids are degraded
► flagella and cilia - hairs which give the cell mobility or move liquids past the outside of the cell
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