Specialised Cells/Differentiation

• Human/Plants are made up of loads of types of cells called specialised cells. Give me 3 examples of a specialised cell.

  Sperm Cell

  Muscle Cell

  Nerve Cell
• Give me an example of a specialised cell in plants.

  Root Hair Cell

  Phloem Cell

  Xylem Cell
• What is the role of a sperm cell?

  to deliver genetic material to an egg in order to fertilise it
• What does the flagellum do?

  allow the sperm cell to swim through the uterus and fallopian tube to reach the egg
• Why do sperm cells have lots of mitochondria?

  provides the energy required for swimming
• Why do sperm cells have digestive enzymes?

  to break through the wall of the egg
• What is differentiation?

  the process by which a cell changes to become specialised e.g. normally changing shape and combination of organelle it contains
• Why is the sperm cell streamlined?

  to make it easier for swimming