Biology 9700 · AS & A Level · Fluid mosaic membranes

Fluid mosaic membranes — practice question

The diagram shows a sketch made from an electron micrograph of a typical animal cell. How many phospholipid layers must a molecule of oxygen pass through to move directly from X, outside the cell, to Y, the mitochondrion matrix?

  • A3
  • B4
  • C5
  • D6

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