Biology 9700 · AS & A Level · Movement into and out of cells

Movement into and out of cells — practice question

Before mitochondria are taken out of cells for microscopy, they are usually placed in a $0.25\ \text{mol dm}^{-3}$ sucrose solution. Why is the sucrose solution used?

  • Ato act as a solvent
  • Bto enable the rate of reaction of the mitochondria to be determined
  • Cto prevent the mitochondria from changing in dimension
  • Dto provide a source of energy

Worked solution & mark scheme

This 1-mark question has a full step-by-step worked solution and mark scheme.

  • Full mark scheme, point by point
  • Step-by-step worked solution
  • Write your answer & get it marked instantly by AI