| Date | November 2009 | Marks available | 1 | Reference code | 09N.1.SL.TZ0.11 |
| Level | Standard level | Paper | Paper 1 | Time zone | TZ0 |
| Command term | Question number | 11 | Adapted from | N/A |
Question
What is the cause of sickle-cell anemia?
A. A change to the base sequence of a hemoglobin gene
B. Mosquitoes acting as the vector for malaria
C. Iron deficiency due to the malaria parasite
D. Production of more white blood cells than red blood cells by bone marrow
Markscheme
A
Examiners report
[N/A]
Syllabus sections
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