Biologia IBPaper 1A, maj 2025, TZ1wzorowane1 pktzamkniętełatwe (szac.)
Which sequence correctly links hormonal changes to the onset of puberty? A. Pituitary LH rises → hypothalamic GnRH falls → gonadal steroid output stops B. Hypothalamic GnRH release increases → pituitary LH release increases → gonadal sex-steroid production…
Biologia IBPaper 2, maj 2024, TZ2wzorowane16 pktotwarteśrednie (szac.)
(a) Outline transcription. (b) Describe how nondisjunction can produce Down syndrome. (c) Explain the roles of named hormones in the development and functioning of male and female reproductive systems.