MYP Biology sample question: Plant and animal cell structure

Plant and animal cells share some structures, but plant cells have additional ones.

1. (a)Name three structures found in plant cells but not in animal cells.[3]
   Show the mark scheme for (a)

   • • Cell wall (1)
   • • Chloroplasts (1)
   • • Permanent vacuole (1)
2. (b)State the function of mitochondria.[2]
   Show the mark scheme for (b)

   • • The site of aerobic respiration (1)
   • • releasing energy for the cell (1)
3. (c)State the function of the cell membrane.[1]
   Show the mark scheme for (c)

   • • Controls which substances enter and leave the cell (1)

Cell wall and cell membrane are different structures. The wall gives support; the membrane controls what passes in and out.