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.

b. For each of the following, state whether the component is hydrophilic or hydrophobic:

i. A

ii. B

iii. Darkly shaded part of protein

iv. Lightly shaded part of protein.

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 difference between channel and carrier proteins.

f. Calculate the magnification of the drawing. Show your working.

Transcribed Image Text:

A B 7nm