📚 Year 12 CAIE Biology: Essay Writing Frameworks & Model Answers | Year 12 CAIE 生物：论文写作框架与范文
In CAIE AS Biology (9700), students often encounter structured and long-answer questions that demand clear, well-organised responses. These 'essay-style' questions appear mainly in Paper 2 and require you to describe, explain, or analyse biological processes. This article provides a proven writing framework, practical tips, and model answers to help you score top marks.
在CAIE AS生物(9700)考试中，学生经常遇到结构化长答题，这些“论文式”问题主要出现在试卷二中，要求你描述、解释或分析生物过程。本文提供经过验证的写作框架、实用技巧和范文，助你取得高分。
1. Understanding Essay-Style Questions in CAIE AS Biology | 理解CAIE AS生物中的论文式问题
In Paper 2, marks are allocated for content, clarity, and use of appropriate scientific terminology. Questions worth 3–6 marks require extended writing, often with command words such as 'describe', 'explain', 'compare', or 'suggest'. Examiners expect answers that are structured, focused, and free of irrelevant detail.
试卷二中的分数根据内容、清晰度和科学术语的使用来分配。3–6分的题目通常要求扩展写作，指令词如“描述”“解释”“比较”或“建议”。考官期望结构清晰、重点突出、没有无关细节的答案。
2. The PEEL Framework for Biology Answers | 生物答案的PEEL框架
Use the PEEL structure to organise each point: Point – state the key idea; Evidence – give specific biological facts or data; Explanation – link the evidence to the question; Link – connect to the next point or the overall process. This keeps your answer coherent and easy to mark.
使用PEEL结构组织每个要点：Point – 陈述关键观点；Evidence – 给出具体生物学事实或数据；Explanation – 将证据与问题联系起来；Link – 连接到下一个要点或整体过程。这使答案连贯且易于评分。
For example, when explaining enzyme specificity: (P) Enzyme-substrate specificity relies on complementary shape. (E) The active site has a specific 3D shape. (E) Only the substrate with a matching shape can bind, forming an enzyme-substrate complex. (L) This induced-fit model also lowers activation energy.
例如，解释酶的特异性时：(P) 酶-底物特异性依赖于形状互补。(E) 活性位点具有特定的三维形状。(E) 只有形状匹配的底物才能结合，形成酶-底物复合物。(L) 这种诱导契合模型也降低了活化能。
3. Command Words and What They Mean | 指令词及其含义
Understanding command words is essential to meeting the examiner's expectations. Here is a quick reference table.
理解指令词对于满足考官期望至关重要。以下是一个速查表。
| Command Word | 中文 | What You Should Do |
|---|---|---|
| Describe | 描述 | State the features, steps or appearance without giving reasons. |
| Explain | 解释 | Give reasons or mechanisms; use 'because' or 'so that'. |
| Compare | 比较 | Identify similarities and differences; use comparative language. |
| Suggest | 建议 | Apply knowledge to a new situation; propose a plausible explanation. |
| Outline | 概述 | Give a brief summary of the main points. |
更多咨询请联系16621398022（同微信）
或截图后用「扫一扫 → 相册」选择本图