| Date | November 2015 | Marks available | 3 | Reference code | 15N.3.SL.TZ0.5 |
| Level | Standard level | Paper | Paper 3 | Time zone | TZ0 |
| Command term | Draw | Question number | 5 | Adapted from | N/A |
Question
Draw a labelled diagram showing the arrangement of proteins in a sarcomere.
Markscheme
a. actin filaments – drawn as thin lines;
b. myosin filaments (with heads) – drawn as thick lines;
c. regions of overlap between fibres should follow diagram of sarcomere;
d. correct labelling of the A or H band/Z line;
Examiners report
There were some good diagrams and some poor diagrams of a sarcomere. Many candidates got all 3 marks.
