Cell Structure

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cell structure ,devision of cell

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Cell Structure

  1. 1. STRUCTURE & PHYSIOLOGY THE CELL
  2. 2. Group Names 1-YASMIN YEHIA 2-AMGAD HUSSEIN 3-SERAG ALI 4-MOHAMED MOKHTAR 5-AHMED HASAN 6-WALEED ABD ELAZIZ
  3. 3. Definition of cell The cell is the fundamental unit of structuree
  4. 4. Cell structure
  5. 5. Type of cell eukaryotes Have nucleus Have DNA Cell division (mitosis& meiosis) E.g animals& plants Prokaryotes No nucleus No DNA Cell division by binary fission E.g bacteria
  6. 6. Cell growth and metabolism Cell grow through the functioning of cellular metabolism. Cell metabolism is the process by which individual cells process nutrients molecules . Metabolism has two distinct division: catabolism, in which the cell breaks down complex molecules to produce energy and anabolism, in which the cells use energy and to construct molecules and perform other biological functions.
  7. 7. Function of cell 1. Cell division 2. Transport Metabolism 3. Transport through cell membrane
  8. 8. Cell division Is the process by which new cells are formed for growth, repair, and replacement at the body
  9. 9. Types of cell division Mitosis: which result in two cell identical to the one parent cell Meiosis: daughters cell with half genetic material
  10. 10. Mitosis Prophase: cell prepared to division
  11. 11. metaphase
  12. 12. anaphase
  13. 13. Cell membrane 1. Definition it is structure to protect cell and control the enterers of substance 2. Description it is bilipids layer embedded between protein lipids  head H2O soluble +ve charge called hydrophili  Tail H2O in soluble -ve called hydrophobic
  14. 14. Function 1. It acts as barrier, enclosing and protecting the component of cell 2. It acts as agate, controlling the flow of molecules in and out of the cell
  15. 15. The cell must selectively absorb nutrients that are essential to its growth and function  Osmosis  Diffusion  Active transport  filtration
  16. 16. Diffusion  It occurs only in substances is the movement of substance through the membranes from any area of high concentration gradient this process called passive diffusion • Another type of diffusion is facilitate in diffusion occurs when water soluble molecule move through the membrane with the help of proteins
  17. 17. Active transport Is the movement of the substance against the concentration gradient from low concentration to high amount of high amount of energy ATP
  18. 18. filtration Is the movement of water and solutes from an area of high hydrostatic pressure to an area of low hydrostatic pressure Hydrostatic pressure is the pressure that is created by the weight of fluid
  19. 19. Cystic fibrosis Genetic defect in transport of substances through cell membrane

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