Cambridge A-Level Biology Learning Outcomes | 剑桥A-Level生物学习成果精讲

📚 Cambridge A-Level Biology Learning Outcomes | 剑桥A-Level生物学习成果精讲

Cambridge A-Level Biology is defined by learning outcomes: precise statements that tell you exactly what to understand, apply, and evaluate. This guide organises the syllabus into ten revision-friendly sections and turns each learning outcome into a self-test prompt.

剑桥A-Level生物课程以学习成果为核心，明确列出考生需要理解、应用和评估的具体要求。本文把考纲整理为十个便于复习的模块，并将每条学习成果转化为自测提示。

1. Cell Structure and Microscopy | 细胞结构与显微技术

You should be able to distinguish prokaryotic cells from eukaryotic cells, identifying structures such as the nucleus, mitochondrion, chloroplast, Golgi apparatus, lysosome, 80S ribosomes, and endoplasmic reticulum in eukaryotes, and the cell wall, capsule, plasmid, 70S ribosomes, and circular DNA in prokaryotes.

你应能区分原核细胞与真核细胞，在真核细胞中识别细胞核、线粒体、叶绿体、高尔基体、溶酶体、80S核糖体和内质网等结构，在原核细胞中识别细胞壁、荚膜、质粒、70S核糖体和环状DNA。

You should also be able to calculate magnification and actual size using light microscope and electron micrograph data, and state the resolution limits of light and electron microscopes.

你还应能利用光学显微镜和电子显微照片数据计算放大倍数与实际大小，并说明光学显微镜与电子显微镜的分辨率限制。

magnification = image size ÷ actual size

放大倍数 = 图像尺寸 ÷ 实际尺寸

You should also be able to make plan drawings of cells and tissues, following the conventions of clear continuous lines, correct proportions, and no shading.

你应能绘制细胞和组织的平面图，遵循清晰连续线条、正确比例且不涂阴影的绘图规范。

---

2. Biological Molecules | 生物分子

You should be able to describe the ring and chain structures of glucose, the formation of glycosidic bonds, and the functions of starch, glycogen, and cellulose in living organisms.

你应能描述葡萄糖的环状和链状结构、糖苷键的形成，以及淀粉、糖原和纤维素在生物体内的功能。

You should be able to explain how triglycerides and phospholipids are formed by esterification, and relate their structures to energy storage, thermal insulation, and membrane formation.

你应能解释甘油三酯和磷脂如何通过酯化反应形成，并将其结构与能量储存、保温和膜的形成联系起来。

You should be able to describe protein structure from primary sequence to quaternary assembly, and explain how hydrogen, ionic, and disulfide bonds maintain the three-dimensional shape.

你应能描述蛋白质从一级序列到四级组装的结构层级，并解释氢键、离子键和二硫键如何维持三维形状。

You should be able to design and interpret biochemical tests: Benedict's test for reducing sugars, iodine for starch, biuret for proteins, and the ethanol emulsion test for lipids.

你应能设计并分析生化检测：本尼迪克特试剂检测还原糖、碘液检测淀粉、双缩脲试剂检测蛋白质、乙醇乳浊液检测脂质。

---

3. Enzymes | 酶

You should be able to explain enzyme specificity using the lock-and-key model and the induced-fit model, and describe how enzymes lower activation energy.

你应能用锁钥模型和诱导契合模型解释酶的专一性，并描述酶如何降低活化能。

You should be able to investigate and interpret the effects of temperature, pH, enzyme concentration, and substrate concentration on the rate of enzyme-catalysed reactions, including the concept of Vmax.

你应能探究并解释温度、pH、酶浓度和底物浓度对酶促反应速率的影响，包括最大反应速率 Vmax 的概念。

You should be able to distinguish competitive inhibition from non-competitive inhibition and outline the use of immobilised enzymes in industrial processes.

你应能区分竞争性抑制与非竞争性抑制，并概述固定化酶在工业过程中的应用。

---

4. Cell Membranes and Transport | 细胞膜与物质运输

You should be able to describe the fluid mosaic model of membrane structure and relate the roles of phospholipids, cholesterol, intrinsic proteins, extrinsic proteins, and glycoproteins to membrane function.

你应能描述细胞膜的流动镶嵌模型，并将磷脂、胆固醇、内在蛋白、外在蛋白和糖蛋白的作用与膜功能联系起来。

You should be able to explain diffusion, facilitated diffusion, osmosis, active transport, endocytosis, and exocytosis, and compare their energy requirements and protein involvement.

你应能解释简单扩散、易化扩散、渗透、主动运输、胞吞和胞吐，并比较它们的能量需求与蛋白质参与。

You should be able to use water potential terminology (ψ) to predict the movement of water in plant and animal cells under hypotonic, isotonic, and hypertonic conditions.

你应能使用水势术语（ψ）预测植物和动物细胞在低渗、等渗和高渗条件下的水分移动。

---

5. The Cell Cycle and Nuclear Division | 细胞周期与核分裂

You should be able to describe the stages of the cell cycle, including interphase, nuclear division, and cytokinesis, and explain the role of telomeres and stem cells.

你应能描述细胞周期的各个阶段，包括间期、核分裂和胞质分裂，并解释端粒和干细胞的作用。

You should be able to identify and describe prophase, metaphase, anaphase, and telophase in mitosis, and explain how mitosis maintains genetic stability.

你应能识别并描述有丝分裂的前期、中期、后期和末期，并解释有丝分裂如何维持遗传稳定性。

You should be able to outline how uncontrolled cell division can lead to cancer and how mutagens, oncogenes, and tumour suppressor genes are involved.

你应能概述细胞分裂失控如何导致癌症，以及诱变剂、原癌基因和抑癌基因如何参与其中。

---

广告 / Sponsored

6. Nucleic Acids and Protein Synthesis | 核酸与蛋白质合成

You should be able to describe the structure of DNA and RNA, including the double helix, complementary base pairing, and the roles of mRNA, tRNA, and rRNA.

你应能描述 DNA 和 RNA 的结构，包括双螺旋、互补碱基配对，以及 mRNA、tRNA 和 rRNA 的作用。

You should be able to explain semi-conservative DNA replication and describe transcription and translation, including the roles of RNA polymerase and ribosomes.

你应能解释 DNA 的半保留复制，并描述转录和翻译过程，包括 RNA 聚合酶和核糖体的作用。

You should be able to explain how gene mutations such as base substitution and frameshift can alter protein structure and function.

你应能解释碱基替换和移码等基因突变如何改变蛋白质结构与功能。

---

7. Inherited Change and Genetic Technology | 遗传变异与基因技术

You should be able to use genetic diagrams to solve monohybrid and dihybrid crosses, including codominance, multiple alleles, and sex-linked inheritance.

你应能利用遗传图解解决单基因和双基因杂交问题，包括共显性、复等位基因和伴性遗传。

You should be able to explain the principles of PCR, gel electrophoresis, and gene editing, and discuss their applications in medicine and forensic science.

你应能解释聚合酶链式反应（PCR）、凝胶电泳和基因编辑的原理，并讨论它们在医学和法医学中的应用。

---

8. Transport in Plants and Mammals | 植物与哺乳动物的运输

You should be able to describe the structure of xylem and phloem and explain transpiration, translocation, and the factors affecting transpiration rate.

你应能描述木质部和韧皮部的结构，并解释蒸腾作用、韧皮部运输以及影响蒸腾速率的因素。

You should be able to describe the mammalian circulatory system, including the structure of the heart, the cardiac cycle, and the functions of arteries, veins, and capillaries.

你应能描述哺乳动物循环系统，包括心脏结构、心动周期以及动脉、静脉和毛细血管的功能。

You should be able to explain the oxygen dissociation curve of haemoglobin, the Bohr effect, and the role of tissue fluid in exchange.

你应能解释血红蛋白氧解离曲线、波尔效应以及组织液在物质交换中的作用。

---

9. Immunity and Infectious Disease | 免疫与传染病

You should be able to compare pathogens including viruses, bacteria, protoctists, and fungi, and explain how diseases such as cholera, measles, malaria, tuberculosis, and HIV/AIDS are transmitted and controlled.

你应能比较病毒、细菌、原生生物和真菌等病原体，并解释霍乱、麻疹、疟疾、结核病和艾滋病等疾病的传播与防控。

You should be able to describe the humoral and cell-mediated immune responses, including B lymphocytes, T lymphocytes, memory cells, and antibody action.

你应能描述体液免疫和细胞免疫反应，包括B淋巴细胞、T淋巴细胞、记忆细胞和抗体的作用。

You should be able to evaluate vaccination programmes and the use of antibiotics, and explain the development of antibiotic resistance.

你应能评估疫苗接种计划和抗生素的使用，并解释抗生素耐药性的产生。

---

10. Respiration, Photosynthesis and Homeostasis | 呼吸作用、光合作用与内稳态

You should be able to outline glycolysis, the link reaction, the Krebs cycle, and oxidative phosphorylation, and compare aerobic and anaerobic respiration in terms of ATP yield.

你应能概述糖酵解、连接反应、三羧酸循环和氧化磷酸化，并比较有氧呼吸与无氧呼吸的 ATP 产量。

You should be able to describe the light-dependent and light-independent reactions of photosynthesis and explain the effects of limiting factors such as light intensity, carbon dioxide concentration, and temperature.

你应能描述光合作用的光反应和暗反应，并解释光强度、二氧化碳浓度和温度等限制因素的影响。

You should be able to explain homeostasis, including the control of blood glucose, thermoregulation, and the role of the

Published by TutorHao | A-Level Biology Revision Series | aleveler.com

更多咨询请联系16621398022（同微信）