| Date | November 2012 | Marks available | 1 | Reference code | 12N.1.SL.TZ0.3 |
| Level | Standard level | Paper | Paper 1 | Time zone | TZ0 |
| Command term | Question number | 3 | Adapted from | N/A |
Question
The following electron micrograph which shows part of two adjacent liver cells.
What is the structure labelled Y?
A. Nucleus
B. Starch grain
C. Lysosome
D. Mitochondrion
Markscheme
D
Examiners report
This question was well answered by most candidates, showing that they could easily identify the mitochondrion form the micrograph.
Syllabus sections
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