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Dominic Luster Cell's (Plasma membrane (Barrier, is a site of…

- - - - Perioxosomes
        
        Breaks down toxins.
        
        Sac full of enzymes
      - Rough endoplasmic reticulum
        
        Membranous sac's and tubules that have ribosomes.
        
        Site of lipid and hormone synthesis. And lipid metabolism.
      - Smooth endoplasmic reticulum
      - Mitochondria
        
        Site of ATP senthesis
        
        Has a rod-like shaped structure.
      - Golgi complex
        
        Receives, sorts, and re-packages proteins. The proteins are then either exported from the cell, or make the plasma membrane larger.
        
        Membranous sac.
      - Lysosomes
        
        Breaks down biological cell waste
        
        Sac full of enzymes
      - Ribosomes
        
        Site of ATP senthesis
        
        Small dense particles
- - - - The proteins in the plasma membrane act as receptors to transmit information from outside to inside the cell.
    - - Two non polar heads that attract water. And is the reason they come into contact with the internal and external fluid of a cell.
      - Also the bilayer has to non-polar tails that are composed of (fatty acids) and create the bilayer formation.
    - - Facilitated diffusion
        
        Requires a protein to pass through the membrane examples are glucose, charged particles, and non-soluble lipids.
      - Osmosis
        
        The diffusion of water across a membrane
      - Simple diffusion
        
        Down a cenentration gradiant which is from a concentrated region to a less concentrated one. Ex: O2, CO2, and fat-souble molecules
    - - Receptor mediated endocytosis
        
        A small pocket that allows substance in by attaching to receptor proteins. This is a selective for of transport.
      - Phagocytosis
        
        Is a large movement the engulfs dead cells. And protects the body against viruses and bacteria.
      - Pinocytosis
        
        A vesicle is formed in the plasma membrane. Pinocytosis is considered cell drinking and is non-selective.
- - - - Dense spherical non-membrane bounded. Site of robosome manufacture. And is surrounded by the nuclear envelope.
    - - The substance within the nucleus