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CELL (NUCLEUS which is surrounded by a nuclear envelope (Contains…

- - - - which makes RIBOSOMES
        
        PROTEIN
- - - - SMOOTH ENDOPLASMIC RETICULUM. has no attachments on it's walls
        
        site for lipid and steroid hormone synthesis, lipid metabolism and drug detoxification
      - ROUGH ENDOPLASMIC RETICULUM ribosomes are attached to its wall
        
        make cell membrane
    - - Receives, sorts and package proteins
        
        .
    - - Function produce ENERGY in form of ATP . Also called power house
    - - Function; destroy foreign bodies
    - - Breaks down TOXIC substance
    - - Function; change shape of membranes for MUSCLE CONTRACTION
    - - FUNCTION; resist forces acting on cells
    - - Build up, have lumen and breaks down
    - - Function; Involved in the process of MITOSIS
- - - - Movement of small particles is down a concentration gradient from high to low till equilibrium is attained, and it does not require energy.
        
        Incase of water of uncharged particles undergo called OSMOSIS
        
        SIMPLE DIFFUSION;
        
        NO ENERGY IS REQUIRED for of uncharged particles eg O2, CO2, and lipid soluble
        
        FACILITATED DIFFUSION; It requires protein and charged particles such as glucose.
        It also requires things not soluble in lipids
    - - It moves Small particles AGAINST CONCENTRATION GRADIENT(from ow to high concentration) and it does not attain equilibrium.
        Require energy, and protein carriers as receptors
    - - Exocytosis
        
        It expels waste materials out of the cell. It secretes cellular products such as hormones and digestive enzymes. Example Goblet cells
      - Endocytosis
        
        Recepter mediated endocytosis
        
        Cell binds to specific receptors (protein), which enable the cell to ingest it
        
        Phagocytosis/ Cellular eating
        
        Part of the big cell goes around a small cell and surrounds it. Then it starts eating the small cell.
        
        Pinocytosis/ cellular drinking.
        
        Vesicle is formed in the plasma membrane. It is non selective