Question

The diagram shows an experiment to demonstrate the movement of molecules...read below.

Answer 1

Answer:

Explanation:

B particles from a region of lower concentration to a region of higher concentration using energy from respiration. ... 8 The diagram shows an experiment to demonstrate the movement of molecules. red ink solution

Answer 2

Answer:

A. Molecules of red ink move through the membrane by diffusion.

Explanation:

Ink molecules move from an area of high concentration (inside the thistle) to an area of low concentration (outside the thistle). This is diffusion and not osmosis because it is the ink that is moving, not the water. Osmosis is ONLY with water, across a semipermeable membrane. Also, this is the correct answer on the CIE Cambridge mark scheme.