| Date | November 2012 | Marks available | 1 | Reference code | 12N.1.HL.TZ0.22 |
| Level | Higher level | Paper | Paper 1 | Time zone | TZ0 |
| Command term | Question number | 22 | Adapted from | N/A |
Question
The concentration of which hormone peaks sharply triggering ovulation?
A. FSH
B. LH
C. Estrogen
D. Progesterone
Markscheme
B
Examiners report
This was the question that elicited the smallest percentage of correct answers but it was an excellent discriminator. Knowledge of changes in the LH surge before ovulation is not well known among the weaker candidates.
Syllabus sections
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