Introduction to the Cambridge International AS & A Level Biology Examination and Syllabus Changes | 剑桥国际AS与A Level生物考试介绍及大纲变化

📚 Introduction to the Cambridge International AS & A Level Biology Examination and Syllabus Changes | 剑桥国际AS与A Level生物考试介绍及大纲变化

Cambridge International AS & A Level Biology (9700) is one of the most widely taken science qualifications for students preparing for university study in medicine, life sciences, and related fields. This article explains the structure of the examination and summarises the key syllabus changes you need to know before starting your revision.

剑桥国际AS与A Level生物（9700）是准备进入大学学习医学、生命科学及相关专业的学生最常选择的科学资格之一。本文介绍考试结构，并总结你在开始复习前需要了解的大纲主要变化。

1. Qualification and Subject Code | 资格与科目代码

Cambridge International AS & A Level Biology uses the subject code 9700. The qualification is linear, meaning you are assessed at the end of the course, not in modules. It is offered as a standalone AS Level or as a full A Level. The full A Level includes both AS and A2 content, and candidates must sit all required papers in the same examination series.

剑桥国际AS与A Level生物使用科目代码9700。该资格为线性结构，即你在课程结束时参加考试，而不是模块化考试。它既可单独作为AS Level，也可作为完整的A Level。完整的A Level包含AS和A2内容，考生必须在同一考试季参加所有规定试卷。

• Subject code | 科目代码: 9700
• Levels available | 可选级别: AS Level only or full A Level
• Typical duration | 通常时长: AS one year; A Level two years
• Prior learning | 前置学习: IGCSE Biology or equivalent is strongly recommended

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2. Linear Assessment and the AS to A Level Route | 线性评估与AS到A Level的路径

The AS Level is a standalone qualification, but it also forms the first half of the A Level. In the full A Level, you take five written papers: Paper 1, Paper 2, Paper 3, Paper 4 and Paper 5. Papers 1 to 3 are the AS components, while Papers 4 and 5 are the A2 components. There is no coursework component; all practical skills are assessed through written papers.

AS Level是一个独立资格，但它也构成A Level的前半部分。在完整的A Level中，你需要参加五份笔试：试卷1、试卷2、试卷3、试卷4和试卷5。试卷1至3为AS组成部分，试卷4和5为A2组成部分。没有课程作业部分；所有实验技能均通过笔试考查。

Because the qualification is linear, early weaknesses in AS topics can affect later A2 performance. Many A2 questions assume confident recall of AS content such as cell structure, biological molecules, enzymes and transport. Therefore, revision should not treat AS and A2 as completely separate blocks.

由于该资格是线性的，AS主题中的早期薄弱环节会影响后续A2表现。许多A2题目默认你已经熟练掌握AS内容，如细胞结构、生物分子、酶和运输。因此，复习不应将AS和A2视为完全独立的模块。

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3. AS Level Paper Structure | AS阶段试卷结构

The AS Level consists of three written papers. Paper 1 is multiple-choice, Paper 2 is structured questions, and Paper 3 is a practical-based written paper. The table below summarises the current format.

AS阶段由三份笔试组成。试卷1为选择题，试卷2为结构化问答题，试卷3为基于实验的笔试。下表总结了现行格式。

Paper	Component	Duration	Marks	AS weighting
1	Multiple Choice	1 h 15 min	40	31%
2	AS Level Structured Questions	1 h 15 min	60	46%
3	Advanced Practical Skills	2 h	40	23%

Paper 1 rewards rapid recognition and recall across the whole AS syllabus. Paper 2 requires longer written answers, data handling, and application of knowledge to unfamiliar contexts. Paper 3 assesses practical techniques, observational skills, and evaluation of experimental data in a written format.

试卷1考查整个AS大纲中快速识别与回忆的能力。试卷2要求较长的书面回答、数据处理以及将知识应用于陌生情境。试卷3以笔试形式考查实验技术、观察技能和对实验数据的评价。

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4. A Level Paper Structure | A Level试卷结构

For the full A Level, candidates take all five papers. Papers 1 to 3 are the same AS papers, while Papers 4 and 5 add A2 content and higher-order skills. The weighting within the A Level is designed so that AS and A2 each contribute broadly half of the total marks.

对于完整的A Level，考生需要参加全部五份试卷。试卷1至3与AS试卷相同，而试卷4和5增加了A2内容及更高阶技能。A Level中的权重设计使AS和A2各占大约一半的总分。

Paper	Component	Duration	Marks	A Level weighting
1	Multiple Choice	1 h 15 min	40	15.5%
2	AS Level Structured Questions	1 h 15 min	60	23%
3	Advanced Practical Skills	2 h	40	11.5%
4	A Level Structured Questions	2 h	100	38.5%
5	Planning, Analysis and Evaluation	1 h 15 min	30	11.5%

Paper 4 is the longest A Level paper and covers the full A2 syllabus, including energy and respiration, photosynthesis, homeostasis, control and coordination, inheritance, selection and evolution, and genetic technology. Paper 5 is shorter but demands careful experimental planning, graphical analysis, and evaluation of limitations.

试卷4是A Level中最长的试卷，覆盖完整的A2大纲，包括能量与呼吸、光合作用、体内稳态、调控与协调、遗传、选择与进化以及基因技术。试卷5较短，但要求仔细的实验规划、图形分析以及对局限性的评价。

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5. Assessment Objectives and Skill Weightings | 评估目标与技能权重

Cambridge International uses three assessment objectives (AOs) across all five papers. The weightings are identical for AS and A Level. Understanding these AOs helps you use the right skills for each question type.

剑桥国际在全部五份试卷中使用三项评估目标（AO）。其权重在AS和A Level中相同。理解这些AO有助于你针对每种题型使用正确的技能。

AO	Skill	AS weighting	A Level weighting
AO1	Knowledge with understanding	40%	40%
AO2	Handling information and problem-solving	40%	40%
AO3	Experimental skills and investigations	20%	20%

AO1 tests recall of biological facts, terminology, and concepts. AO2 tests application, analysis, interpretation and evaluation of data, including unfamiliar contexts such as graphs, tables and diagrams. AO3 tests practical work: planning experiments, recording observations, and evaluating methods and results.

AO1考查对生物学事实、术语和概念的回忆。AO2考查应用、分析、解释和评价数据的能力，包括图表、表格和示意图等陌生情境。AO3考查实验工作：规划实验、记录观察结果以及评价方法和结果。

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6. Command Words and Question Styles | 指令词与题型风格

Command words tell you how much detail and what kind of answer is expected. In the updated syllabus, Cambridge has clarified the meaning of key command words to reduce confusion. Examples include state, define, describe, explain, suggest, discuss, evaluate and calculate.

指令词告诉你需要多少细节以及期望的回答类型。在更新后的大纲中，剑桥明确了关键指令词的含义，以减少混淆。常见指令词包括 state、define、describe、explain、suggest、discuss、evaluate 和 calculate。

• State | 陈述: give a brief answer without explanation.
• Define | 定义: give the precise meaning of a term.
• Describe | 描述: give the main features or processes in a logical sequence.
• Explain | 解释: give reasons or mechanisms, often using ‘because’ or ‘so’.
• Suggest | 建议: apply knowledge to a new situation; there may be more than one correct answer.
• Evaluate | 评价: judge the value, importance or reliability of evidence and arrive at a conclusion.

In Paper 1, questions are multiple-choice and often test one command word in a very short form. In Papers 2, 4 and 5, longer questions may combine several command words in parts. For example, a question might ask you to describe a set of results, suggest a reason for a trend, and then evaluate a proposed explanation.

在试卷1中，题目为选择题，通常以非常简短的形式考查一个指令词。在试卷2、4和5中，较长的题目可能将多个指令词组合在每小题中。例如，一道题可能要求你描述一组结果，建议一个趋势的原因，然后评价所提出的解释。

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7. Practical Skills and the Role of Papers 3 and 5 | 实验技能与试卷3和试卷5的作用

Practical work is assessed without a school-based coursework component. Instead, Paper 3 requires you to apply knowledge of standard laboratory techniques, observations and data presentation. Paper 5 tests higher-level planning, analysis and evaluation skills.

实验工作不通过校内课程作业来评估。相反，试卷3要求你应用标准实验室技术、观察和数据处理的知识。试卷5考查更高层次的规划、分析和评价技能。

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