Cells and Organelles

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  • Created by: ledaazimi
  • Created on: 14-01-15 10:07
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  • Cells & Organelles
    • Eukaryotes - complex (includes all animal and plant cells)
      • Nucleus - contains nuclear envelope - chromatin and nucleolus: nucleolus makes ribosomes
      • Lysosomes - contains digestive enzymes to digest invading cells or break down worn components
      • Vesicles - transports substances in and out - formed by GA or ER or cell surface
      • Ribosomes - floats free in cytoplasm or attached to rER - proteins are made
      • Endoplasmic Reticulum - rER and sER - rER covered in ribosomes - synthesises and processes lipids - rER folds and processes proteins made at ribosoms
      • Golgi Apparatus - group of fluid filled sacs - vesicles seen at edges of sacs - processes and packages lipids and proteins - also makes lysosomes
      • Centriole - hollow cylinders containing ring of microtubules - involved with separation of chromosomes during cell division
      • Mitochondrian - oval shaped / double membrane: inner one folds into a cristae - matrix contaisn enzymes for respiration - ATP produced - site of aerobic respiration
    • Prokaryotes cells - simpler ie bacteria - comparisons
      • DNA floats free in cytoplasm - circular
      • Plasmid - extra loop of DNA floats free in cytoplasm
      • Ribosomes are small  floating in cytoplasm
  • Prokaryotes cells - simpler ie bacteria - comparisons
    • DNA floats free in cytoplasm - circular
    • Plasmid - extra loop of DNA floats free in cytoplasm
    • Ribosomes are small  floating in cytoplasm
  • Eukaryotes DNA linear - prokaryotes DNA circular
  • Nucleus present - DNA inside nucleus - Eukaryotes
    • No nucleus present  - DNA free in cytoplasm - Prokaryotes
  • No nucleus present  - DNA free in cytoplasm - Prokaryotes
  • Many organelles present inc mitochondria - Eukaryotes
    • Few organelles - no mitochondria - Prokaryotes
  • Few organelles - no mitochondria - Prokaryotes
  • Larger ribosomes - Eukaryotes
    • Smaller Ribosomes - Prokaryotes
  • Contains flagellum (tail for movement of cell)

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