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cells (other organelles (cytoskeleton (microfilaments (smallest, help…

- - - - dense particles
      - free or attached to endoplasmic reticulum
    - - the sites of protein synthesis
  - - - with ribosomes
        
        makes proteins and membranes
    - - without ribosomes
        
        site of lipid and steroid hormone synthesis
        
        drug detoxification
  - - - stack of smooth membrane sacs close to the endoplasmic reticulum
    - - receives proteins , sorts modifies and repackages proteins
      - supports membrane growth and phospholipid bilayer creation of lysosomes.
  - - - membranous sacs containing enzymes
    - - enzymes that break down biological material
  - - - smallest
      - help change shape of cell
    - - rope-like , connected to desmosomes, permanent
    - - lagest
      - give shape to cells, transport of vesicles
- - - - bacteria
- - - - barrier between watery exterior and watery interior
      - allows substance to pass through
    - - allow substance to pass through.
      - receptors-receive messages and transmit them to inside
  - - - simple diffusion
        
        no cell energy required
        
        small uncharged particles, small lipid soluble particles
      - facilitated diffusion
        
        no cell energy required
      - active transport
        
        cell energy required
- - - - double membrane, pierced by the pores
      - separates the nucleoplasm from cytoplasm and regulates passage of substance to and from nucleus
    - - threadlike material composed of DNA
      - DNA constitutes the genes
    - - dense spherical (non-membrane-bounded) bodies
      - site of ribosomes subunit manufacture