A-Level Biology (CAIE 9700)

Course Overview 课程介绍

CAIE 高级生物课程，分 AS 与 A2，医学/生命科学申请核心科目。

A-Level Biology is a UK advanced secondary course split into AS (Year 1) and A2 (Year 2). It spans molecules, cells, organisms and ecosystems, covering biological molecules, cell physiology, genetics, evolution, ecology and biotechnology, with strong emphasis on experimental design and data analysis. A key subject for medicine, biology, biomedical science, pharmacy, veterinary science and life sciences.

Key Facts 基本信息

Exam Board (考试局)	CAIE (Cambridge Assessment International Education)
CAIE Code (代码)	9700
Duration (学制)	2 years (AS + A2)
Grading (评分)	A* - E (A* only for full A-Level)
Exam Structure (CAIE)	AS: Paper 1/2/3 · A2: Paper 4/5
Practical (实验)	Paper 3 (AS) hands-on + Paper 5 (A2) planning and evaluation

AS Syllabus AS 阶段章节

AS1. Cell Structure

Cell structure, microscopy, prokaryotic and eukaryotic cells, organelles, virus structure
AS2. Biological Molecules

Biological molecules, water, carbohydrates, lipids, proteins, nucleic acids structure and function
AS3. Enzymes

Enzymes, mechanism of enzyme action, factors affecting enzyme activity, Michaelis-Menten equation, inhibitors
AS4. Cell Membranes and Transport

Cell membranes and transport, fluid mosaic model, diffusion/osmosis/active transport, endocytosis and exocytosis
AS5. The Mitotic Cell Cycle

Mitotic cell cycle, chromosomes, stages of cell cycle, cancer
AS6. Nucleic Acids and Protein Synthesis

Nucleic acids and protein synthesis, DNA replication, transcription and translation, genetic code
AS7. Transport in Plants

Transport in plants, xylem and phloem, transpiration, membrane transport mechanisms
AS8. Transport in Mammals

Transport in mammals, blood composition, blood vessel structure, heart structure and circulation, haemoglobin
AS9. Gas Exchange and Smoking

Gas exchange and smoking, mammalian lung structure, ventilation mechanism, effects of smoking
AS10. Infectious Diseases

Infectious diseases, pathogens, malaria/TB/HIV, antibiotics and resistance
AS11. Immunity

Immunity, specific and non-specific immunity, antibodies, B cells and T cells, vaccines

A2 Syllabus A2 阶段章节

A212. Energy and Respiration

Energy and respiration, glycolysis, Krebs cycle, electron transport chain, ATP synthesis
A213. Photosynthesis

Photosynthesis, light-dependent reactions, light-independent reactions (Calvin cycle), limiting factors
A214. Homeostasis

Homeostasis, negative feedback, blood glucose regulation, osmoregulation, excretion
A215. Control and Coordination

Control and coordination, neurons and synapses, hormones, action potentials, sense organs
A216. Inherited Change

Inherited change, meiosis, chromosome mutations, epigenetics, sex determination
A217. Selection and Evolution

Selection and evolution, natural selection, Hardy-Weinberg equilibrium, isolation and speciation
A218. Biodiversity, Classification and Conservation

Biodiversity, classification and conservation, species diversity, classification systems, conservation strategies
A219. Genetic Technology

Genetic technology, recombinant DNA, PCR, gel electrophoresis, GMOs, ethics
A220. Control of Gene Expression

Control of gene expression, transcription factors, epigenetic modifications, small RNAs
A221. Recombinant DNA Technology

Recombinant DNA technology, vectors and plasmids, library construction, gene therapy

Exam Structure (CAIE 9700) 考试结构

Paper 1	AS Multiple Choice · 1h15m · 31% of AS / 15.5% of A-Level
Paper 2	AS Structured Questions · 1h15m · 46% of AS / 23% of A-Level
Paper 3	AS Advanced Practical Skills · 2h · 23% of AS / 11.5% of A-Level
Paper 4	A2 Structured Questions · 2h · 38.5% of A-Level
Paper 5	A2 Planning, Analysis and Evaluation · 1h15m · 11.5% of A-Level

Suitable Majors 适用专业与衔接

医学、生物、药学、兽医等专业重要基础，多数英国医学院必修。

A-Level Biology is a key subject for medicine, biomedical science, biological sciences, pharmacy, dentistry, veterinary science, nursing, neuroscience, ecology, life sciences and sports science. Most UK medical schools require or strongly recommend Biology as one of the subjects. It provides a solid foundation for university cell biology, genetics, physiology and biochemistry.