Cell Structure and Function

• Nucleus


  Control center of the cell<|>Tells the cell what to do
• Nucleus


  1. Contains chromatin

  2. Creates rRNA to make ribosomes

  3. Ribosomes = rRNA + Protein

  4. Sends mRNA to ribosome to make proteins
• Endoplasmic Reticulum (ER)


  Rough ER: Contains ribosomes, production of proteins, transport proteins using vesicles<|>Smooth ER: No ribosomes, produces lipids, cholesterol and hormones, detoxification
• Golgi Body


  Receives vesicles and modifies proteins<|>Adds lipids and carbs<|>Protein folding and exportation
• Mitochondria


  Generates energy (ATP)<|>Cellular respiration<|>Contains its own DNA
• Lysosome


  Contains digestive enzymes<|>Destroy pathogens (white blood cells)
• Cytoplasm


  Jelly-like fluid<|>Contains dissolved solutes
• Microtubules


  Largest of the 3 fibers<|>Made up of tubulin<|>Structural support and transportation
• Microfilaments


  Smallest of the 3 network fibers<|>Made up of actin<|>Elongation and contraction
• Intermediate Filaments


  Provides mechanical support
• Centrioles


  Cell division - mitotic spindle<|>Pulls apart chromosomes
• Cell Wall


  Found in plant's cell only
• Cell Membrane


  Selective permeability<|>Allows certain molecules to enter<|>Contains protein channels<|>Consist of phospholipid bilayer