| Date | November 2016 | Marks available | 1 | Reference code | 16N.1.SL.TZ0.3 |
| Level | Standard level | Paper | Paper 1 | Time zone | TZ0 |
| Command term | Identify | Question number | 3 | Adapted from | N/A |
Question
The cell membrane model proposed by Davson–Danielli was a phospholipid bilayer sandwiched between two layers of globular protein. Which evidence led to the acceptance of the Singer–Nicolson model?
A. The orientation of the hydrophilic phospholipid heads towards the proteins
B. The formation of a hydrophobic region on the surface of the membrane
C. The placement of integral and peripheral proteins in the membrane
D. The interactions due to amphipathic properties of phospholipids
Markscheme
C
Examiners report
[N/A]
