bio dse 2022

Lubishian · 2022-04-26T20:35:07+08:00

由於取消咗SBA Paper 1B 嘅重點係實驗題背書題會少咗好多實驗題問法有：（1 ）回應data題例如： Describe the trend of …. Compare curve A to B 呢d題目多數 2-3分而背書1分都冇佢想你用文字整合數據例如俾條curve 你就想你講幾時rate最高幾時最低用背書解釋係0分 Compare curves會高分d 頭2分：喺幾分幾秒 A大於B/ B大於A/ A等於B 最後1分：整體趨勢例如 At all time, A多於B 呢1分成日唔記得寫（2）回應data題+ 解釋例如 Describe and explain… 同（1）最大分別係要講形成呢個結果背後嘅原因係乜嘢原因又分兩種： (a) 題目嘅independent variable (b) 純粹背書吹水幾時用 a 幾時用b 幾時用a+b 題目會講例如話 based on the result and your knowledge 就一定要a+b （3）步驟題例如 What is the purpose of step 1 If step 1 is skipped… What is the purpose of adding… 呢題通常2分第1分：呢個步驟背後嘅目的第2分：呢個步驟背後嘅原理第1分答法 To ensure the DV is due to IV only (萬能key) 第2分答法睇吓有咩physical / chemical change 例如題目話 study the effect of temperature (IV) on transpiration rate (DV) of plant A 問what is the purpose of adding oil (2分）第1分 To ensure the change in transpiration rate (DV) is due to temperature (IV) only 第2分 To prevent water evaporation (physical change) 如果第2題問 why use boiled enzyme / why heating 第1分你懂的第2分 To denature the enzyme (chemical change) （4）how 題例如 How oxygen enters bloodstream Describe the process of seed germination 背書+推論由開始到結果每1步都要講缺一不可而邊1步有分 marking scheme 話事（5）鳩估題 1分就skip咗佢唔好嘥時間想我繼續講或者有野問就回覆冇人回我就收皮