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CELL PARTS AND FUNCTIONS - DOC

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					                            CELL PARTS
                           AND FUNCTIONS


          PART             Plant    PICTURE                 FUNCTION
                          Animal
                            or
                           Both?
Cell Membrane                                     Regulates what enters and leaves
                                                   the cell
                          BOTH                    Separates inside reactions from
“gatekeeper”                                       outside reactions

Nucleus                   BOTH                    Controls most of the cell’s
                                                   functions
                                                  Houses and protects the cell’s
                                                   genetic information (DNA)
“control center”
Nucleolus                 BOTH                    Makes ribosomes
                                                  Concentrates DNA when
                                                   making ribosomal RNA


Mitochondria              BOTH                   Transfers energy from organic
                                                 molecules to ATP (which powers all
                                                 of the cell’s activities)


“powerhouse”
Ribosomes                 BOTH                   Builds protein




Endoplasmic Reticulum     BOTH                   Provides a pathway for molecules to
“intracellular highway”            SER: no       move within the cell
                                   ribosomes
   Smooth                                       SER: builds lipids (cholesterol & sex
                                   RER:has       hormones), releases calcium
   Rough                          ribosomes
                                   (why rough)   RER: produces phospholipids and
                                                 proteins
Lysosome                  Animal                 Contain digestive enzymes that
                                                 break down large molecules
“recycling center”
Golgi Apparatus      BOTH                     Modification and packaging of
                                              molecules for export from the cell


“post-office”

Vacuole              Plant                    Large fluid-filled organelle that
                                              stores H2O, enzymes, and wastes

“water tank”


Cell Wall            Plant                    Rigid layer that contains cellulose,
                                              provide structural support to the cell



Plastids             Plant                     Chloro: Use light energy to make
 Chloroplasts                                  carbohydrates from CO2 and
                                                H2O during photosynthesis
   Chromoplasts
                                               Chromo:contain colorful
   Amyloplasts                                 pigments that give flowers and
                                                fruits color

                                               Amylo: Store starch
Cytoskeleton                  Network of
                              thin tubes       Hold organelles in place,
   Microtubules     BOTH     and filaments     maintain cell’s shape, act as
                                                tracks for organelle movement
   Intermediate     BOTH                      Anchor the nucleus and other
    Filaments                                   organelles, maintain shape of
                                                nucleus
   Microfilaments   BOTH                      Contribute to cell movement


   Cilia/Flagella   Animal                    Assist in cell movement (cilia –
                                                short, hair -ike; flagella – long,
                                                whip-like)
   Centrioles       Animal                    Help with cell division

				
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