Cells + transport

• What is the function of a root hair cell?


  Absorb water and minerals from the soil
• Give 2 adaptations of a root hair cell?


  Large surface area , Lots of mitochondria
• Name the 3 common ways that the lungs and villi are adapted for gas exchange?

  1. Large surface area
  2. One cell thick membrane (allows short diffusion pathways)
  3. Good blood supply (helps maintain a steep concentration gradient)
• What is the function of a sperm cell?


  To fertilise the egg
• Give 2 adaptations of a sperm cell?

  1. Has a tail to help it swim to the egg
  2. Contains lots of mitochondria to provide energy
• What is the function of a palisade cell?

  Carries out photosynthesis in the leaf
• Give two adaptations of a palisade cell?

  1. Contains lots of chloroplasts
  2. Located at the top surface of a leaf