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Cambridge igcse biology ( 2016 2018) cell

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this presentation is depending on Cambridge syllabus of 2016-2018 for biology 610

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Cambridge igcse biology ( 2016 2018) cell

  1. 1. Cambridge IGCSE Biology 2- organisation of organisms Biology Cambridge IGCSE Biology
  2. 2. 2.1 cell structure and organisation
  3. 3. Cell membrane function It is controlling the movement of substances in and out of the cell ( semi permeable ) 2.1 cell structure and organisation Nucleus function Keep the genetic information for one generation to other Because of DNA Helps cell to produce suitable proteins
  4. 4. Cytoplasm function Many different metabolic reactions take place in it 2.1 cell structure and organisation chloroplast function It contains chlorophyll to absorb Light energy for PHOTOSYNTHESIS Vacuole function It helps plant cells to keep in shape Helps in water movement by osmosis
  5. 5. Ribosome It is small dot attached to network of membrane runs through cytoplasm called ( rough endoplasmic reticulum ) Ribosome function It is the place where proteins are made 2.1 cell structure and organisation Extended
  6. 6. Mitochondria It is found all cells except ( prokaryotic cell ) It is the power house of the cell It is the center of aerobic respiration ( glucose + O2) It is found in large number in cells which need a lot of energy such as ( muscles – sperm – neurons 2.1 cell structure and organisation Extended
  7. 7. 2.2 Levels of organisation Types of cell Where it is found Function Ciliated cells Lining the trachea and bronchi Move mucus upwards Root hair cells Near the end of plant root Absorb water and mineral Xylem vessels In root , stem and leaf Transport water and mineral Support plant Palisade cells In the plant leaf photosynthesis Types of cell Where it is found Function Nerve cells In body animals Transport in formation in electrical impulse Root hair cells Near the end of plant root Absorb water and mineral Red blood cells In the blood of mammals Transport Oxygen Sperm and egg cells In testes and ovaries Fuse together to form zygot
  8. 8. 2.2 Levels of organisation Tissue is a group of cells with similar structures, working together to perform a shared function Organ is a structure made up of a group of tissues, working together to perform specific functions • Organ system is a group of organs with related functions, working together to perform body functions
  9. 9. 2.2 Levels of organisation
  10. 10. 2.2 Levels of organisation Magnification= Image size Actual size __________________

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