animal cell specialisation

• What are the three specialized animal cells?

  Sperm cells, nerve cells, muscle cells
• What is the process called when cells become specialized?

  Differentiation
• What adaptations do sperm cells have for fertilization?

  • Long tail for swimming
  • Streamlined shape
  • Packed with mitochondria for energy
  • Contains enzymes to digest ovum's outer layer
• What is the job of a sperm cell?

  To join with an ovum
• How do sperm cells contain genetic information?

  In the nucleus
• What are the key features of nerve cells?

  • Long axon for impulse transmission
  • Myelin sheath for insulation
  • Synapses for impulse transfer
  • Dendrites to increase surface area
• What is the primary function of nerve cells?

  To send electrical impulses
• What does myelin do for nerve cells?

  Insulates the axon
• What do dendrites do in nerve cells?

  Increase surface area for connections
• What are the key features of muscle cells?

  • Can contract to shorten
  • Contain protein fibers that change length
  • Packed with mitochondria for energy
  • Work together to form muscle tissue
• What is the main function of muscle cells?

  To contract and shorten
• What do protein fibers in muscle cells do during contraction?

  Change length to shorten the cell
• Why do muscle cells have many mitochondria?

  To provide energy for contraction
• How do muscle cells work together?

  • Form muscle tissue
  • Coordinate contractions for movement
  • Provide strength and support