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C2.1.13 (HL)—Effects of oestradiol and progesterone Topic Practice

C2.1.13 (HL)—Effects of oestradiol and progesterone Topic Practice
IB Biology syllabusBiology SL/HLFirst assessment 2025

Students practise linking oestradiol and progesterone to their physiological roles in reproductive development, cycle regulation, and pregnancy maintenance.

How this is tested

  • explain how oestradiol acts on hypothalamic and pituitary targets to regulate feedback in the menstrual cycle
  • interpret how progesterone from the corpus luteum maintains the endometrium for potential implantation
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