• 6 The diagram shows part of a membrane containing a channel protein. Part of the protein molecule is shaded. a Identify the parts labelled A, B and C. [3] b For each of the following, state whether B the component is hydrophilic or hydrophobic: i iv A ii B iii darkly shaded part of protein C lightly shaded part of protein. [2] c Explain how ions would move through the channel protein. d State two features that the channel proteins and carrier proteins of membranes have in common. e State one structural diff erence between channel and carrier proteins. f Calculate the magnification of the drawing. Show your workin