https://www.threads.com/@ron.sir.chemistry/post/DVszuyTlEh3?xmt=AQF07WjZLQvEEspEtwITEYDIgblzEwNZzO5OywwRQJsu5tlImw2-RSOi1lLh9hlNvsTcNFw&slof=1
![['DSE生物：掌握性激素sex hormones要點 | 朗林生物補習社 | HKDSE生物課程 性激素, Oestrogen, Testosterone']](data:image/svg+xml;base64,PHN2ZyB2aWV3Qm94PSIwIDAgMjgwIDI4MCIgd2lkdGg9IjI4MCIgaGVpZ2h0PSIyODAiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyI+PC9zdmc+ "HKDSE生物｜性激素全攻略！朗林生物高分必讀重點 #HKDSE生物 #性激素 #朗林生物 1")
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朗林生物 HKDSE 生物補習社
專攻 Sex Hormones 性激素，助你直取 5**！
學生成績亮眼
- 2024 DSE: 15位學生5**，全A以上率95%
- 2023 DSE: 12位5**，最高分5**
- 2022 DSE: 10位5**，平均分5*
家長學生評語
- “Don Sir 講得超清楚，Sex Hormones 一堂秒懂！” – 5** 學生
- “Miss Maggie 小班教學，模擬試超準！” – 家長
- “溫書Group 超有用，隨時問問題！” – 5* 學生
朗林生物 4大特點
- 真人小班 / Zoom 彈性上堂
- HKDSE 專題筆記 + 無限溫書
- 數據分析弱點，針對補救
- 隨堂錄影，回看不怕漏
Don Sir
10年 DSE 經驗，Sex Hormones 專家，5** 率王！
Miss Maggie
生動解說，反饋機制一講就明，學生愛戴！
4大地點 方便就近
HKDSE 生物：Sex Hormones 性激素專題
在 HKDSE Biology 中，Sex hormones 是核心，包括 oestrogen 雌激素、progesterone 黃體酮、testosterone 睪酮，控制 menstrual cycle 月經週期 及 spermatogenesis 精子生成。關鍵機制為 negative feedback 負反饋，GnRH、FSH、LH 由 hypothalamus/pituitary 調控。朗林生物深入講解，助你掌握圖表分析！（約500字內容）
1. (MC) Which hormone maintains the corpus luteum?
答：LH (Luteinising Hormone). 詳解：In the menstrual cycle, LH surge triggers ovulation, then maintains corpus luteum to secrete progesterone until negative feedback if no pregnancy. (負反饋抑制 GnRH/FSH/LH)
2. Explain role of oestrogen in follicular phase.
答：Stimulates endometrial proliferation & FSH negative feedback. 詳解：Oestrogen from growing follicles thickens endometrium; high levels inhibit FSH to prevent over-stimulation of follicles.
3. Describe testosterone effects.
答：Secondary sexual characteristics & spermatogenesis. 詳解：Produced by Leydig cells, stimulated by LH; promotes sperm production in seminiferous tubules via Sertoli cells.
4. Negative feedback in menstrual cycle.
答：High oestrogen/progesterone inhibit GnRH → ↓FSH/LH. 詳解：Prevents multiple ovulations; if no implantation, levels drop → menstruation.
5. Compare male/female hormone control.
答：Male: Steady testosterone; Female: Cyclic oestrogen/progesterone. 詳解：Both use pituitary-gonad axis, but male lacks cycle due to constant negative feedback.
總字數約500，包含關鍵術語！
#HKDSEBiology
#MenstrualCycle
#NegativeFeedback
#朗林生物
English Version: HKDSE Biology – Sex Hormones
Core topic: Oestrogen, progesterone, testosterone regulate menstrual cycle and spermatogenesis via negative feedback (GnRH, FSH, LH). 5 practice questions with detailed solutions provided above for exam prep.
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