📚 Year 10 CIE Biology: Complete Syllabus Breakdown | Year 10 CIE 生物：课程大纲全面解析
Embarking on the CIE IGCSE Biology course in Year 10 is an exciting step. This syllabus breakdown will guide you through the essential topics, core concepts, and the structure of the curriculum, so you know exactly what to expect and how to focus your revision from the very start. We will walk through all the key areas you will study, highlighting the most important learning outcomes and how they interconnect.
十年级开始学习 CIE IGCSE 生物课程是激动人心的一步。这份课程大纲全面解析将带你了解必学主题、核心概念以及课程结构，让你从一开始就清楚要学什么、如何高效复习。我们会逐一讲解所有关键领域，突出最重要的学习目标及其相互联系。
1. Understanding the Syllabus and Assessment Structure | 理解课程大纲与评估结构
The CIE IGCSE Biology syllabus (0610 for the graded A*-G or 0970 for 9-1 grading) is carefully designed to develop both biological knowledge and practical scientific skills. The content is separated into Core and Supplement topics, where Core is essential for all students and Supplement extends the depth for those aiming for higher grades.
CIE IGCSE 生物课程（0610 采用 A*-G 评级，0970 采用 9-1 评级）经过精心设计，旨在培养生物学知识和科学实践技能。内容分为核心和拓展两部分，核心是全体学生必须掌握的，拓展则为志在更高等级的学生提供了更深入的知识。
Your final assessment typically consists of three papers: a multiple-choice paper, a theory paper with structured questions, and a practical assessment (or an alternative to practical paper). In Year 10, the focus is on laying a solid foundation by covering most of the Core syllabus, along with introducing key practical skills that you will continue to build upon in Year 11.
最终评估通常由三份试卷组成：选择题卷、结构化问答题理论卷，以及实验操作评估（或实验替代卷）。十年级的重点是打下坚实基础，覆盖大部分核心大纲内容，并引入关键的实验技能，为十一年级进一步深化做好准备。
2. Characteristics and Classification of Living Organisms | 生物的特征与分类
All living organisms share a set of life processes, often remembered by the acronym MRS GREN: Movement, Respiration, Sensitivity, Growth, Reproduction, Excretion and Nutrition. You will need to apply these characteristics to distinguish between living and non-living things.
所有生物共享一系列生命活动，常用首字母缩写 MRS GREN 来记忆：运动、呼吸、感应、生长、生殖、排泄和营养。你需要运用这些特征来区分生物与非生物。
Classification groups organisms based on shared features. You will study the binomial naming system (genus and species), and learn to describe the main features of the five kingdoms: Animals, Plants, Fungi, Prokaryotes (bacteria) and Protoctists. The syllabus also introduces vertebrates (fish, amphibians, reptiles, birds, mammals) and key arthropod groups like insects, crustaceans, arachnids and myriapods.
分类学根据共同特征对生物进行分组。你将学习双名法（属名和种名），并掌握五界系统的主要特征：动物界、植物界、真菌界、原核生物界（细菌）和原生生物界。大纲还介绍脊椎动物（鱼、两栖、爬行、鸟、哺乳）以及节肢动物中的重要类群，如昆虫、甲壳类、蛛形纲和多足类。
For plants, you will be able to recognise ferns and flowering plants (monocotyledons and dicotyledons) by looking at leaves, roots, stems and flower parts. Classification skills are often tested with dichotomous keys.
在植物方面，你将能通过观察叶、根、茎和花部来识别蕨类植物和开花植物（单子叶植物与双子叶植物）。分类技能常以二叉检索表的形式考查。
3. Cell Structure and Organisation | 细胞结构与组织水平
The cell is the basic unit of life. You will compare the structures of animal and plant cells under a light microscope, identifying organelles such as the nucleus, cytoplasm, cell membrane, mitochondria, ribosomes, and in plant cells, the cell wall, chloroplasts and a large permanent vacuole.
细胞是生命的基本单位。你将通过光学显微镜比较动植物细胞的结构，识别细胞器，如细胞核、细胞质、细胞膜、线粒体、核糖体，以及在植物细胞中的细胞壁、叶绿体和中央大液泡。
Understanding how cells specialise to form tissues, organs and organ systems is crucial. For example, ciliated cells move mucus in the trachea, root hair cells absorb water, and xylem vessels transport water. You will calculate magnification using the formula:
理解细胞如何分化形成组织、器官和器官系统至关重要。例如，纤毛细胞推动气管中的黏液，根毛细胞吸收水分，木质部导管运输水分。你需要运用公式计算放大率：
Magnification = Image size ÷ Actual size
4. Movement In and Out of Cells | 物质进出细胞
Substances move across cell membranes through diffusion, osmosis and active transport. Diffusion is the net movement of particles from a region of higher concentration to a region of lower concentration, down a concentration gradient, and is essential for gas exchange and nutrient uptake.
物质通过扩散、渗透和主动运输跨膜运动。扩散是粒子沿浓度梯度从高浓度区域向低浓度区域的净运动，对气体交换和养分吸收至关重要。
Osmosis specifically describes the movement of water molecules through a partially permeable membrane from a region of higher water potential (dilute solution) to a region of lower water potential (concentrated solution). You will carry out investigations using dialysis tubing and potato cylinders to explore the effects of different solutions on plant tissue.
渗透特指水分子通过半透膜，从水势较高的区域（稀溶液）向水势较低的区域（浓溶液）移动。你将使用透析袋和土豆条进行实验，探究不同溶液对植物组织的影响。
Active transport moves substances against the concentration gradient, requiring energy from respiration. This is vital in root hair cells absorbing mineral ions and in the kidneys reabsorbing glucose.
主动运输逆浓度梯度移动物质，需要呼吸作用提供的能量。这对于根毛细胞吸收矿物质离子和肾脏重吸收葡萄糖至关重要。
5. Biological Molecules and Enzymes | 生物分子与酶
The major biological molecules are carbohydrates, proteins and lipids. You will learn how to test for these molecules in the lab: Benedict's test for reducing sugars, iodine solution for starch, biuret test for proteins, and ethanol emulsion test for fats/oils. The structure of starch, glycogen and cellulose as polysaccharides, and the roles of DNA as the genetic material, complete this topic.
主要的生物分子包括碳水化合物、蛋白质和脂质。你将学习在实验室检测这些分子：本尼迪克特试剂检测还原糖，碘液检测淀粉，双缩脲试验检测蛋白质，乙醇乳浊液试验检测脂肪。淀粉、糖原和纤维素等多糖的结构，以及 DNA 作为遗传物质的作用，也属于本部分内容。
Enzymes are protein molecules that act as biological catalysts, speeding up reactions without being used up. The lock-and-key model describes how a substrate fits into the enzyme's active site. You must investigate how temperature and pH affect enzyme activity, explaining denaturation at extremes of temperature or pH where the active site loses its specific shape.
酶是起生物催化剂作用的蛋白质分子，能加速反应而自身不被消耗。锁钥模型描述了底物如何与酶的活性位点契合。必须研究温度和 pH 如何影响酶活性，并能解释在极端温度或 pH 下，酶的活性位点失去特定形状而导致变性。
6. Plant Nutrition and Transport | 植物营养与运输
Photosynthesis is the process by which plants manufacture carbohydrates from carbon dioxide and water, using light energy absorbed by chlorophyll. The word and balanced chemical equations are essential knowledge:
光合作用是植物利用叶绿素吸收的光能，将二氧化碳和水转化为碳水化合物的过程。其文字和化学方程式是必备知识：
6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂
You will investigate the need for chlorophyll, light and carbon dioxide, and learn about limiting factors that affect the rate of photosynthesis. The leaf is structurally adapted for efficient gas exchange and light absorption, with stomata, palisade mesophyll and spongy mesophyll playing key roles.
你将通过实验验证叶绿素、光和二氧化碳的必要性，并学习影响光合作用速率的限制因素。叶片在结构上适应了高效气体交换和光吸收，气孔、栅栏组织和海绵组织起着关键作用。
Transport in plants relies on xylem, which carries water and dissolved minerals from roots to leaves, and phloem, which translocates sucrose and amino acids. The transpiration stream is driven by evaporation from leaves, and factors such as temperature, humidity, wind and light intensity affect transpiration rate.
植物的运输依赖木质部（将水与溶解矿物质从根运送到叶）和韧皮部（转运蔗糖和氨基酸）。蒸腾流由叶片蒸发驱动，温度、湿度、风和光照强度等因素影响蒸腾速率。
7. Human Nutrition and Digestion | 人体营养与消化
A balanced diet includes carbohydrates, proteins, lipids, vitamins, minerals, dietary fibre and water. You need to know the sources and functions of key nutrients, and understand how energy requirements vary with age, gender and activity. Malnutrition conditions such as kwashiorkor, obesity and vitamin deficiencies like scurvy will be explored.
均衡饮食包括碳水化合物、蛋白质、脂质、维生素、矿物质、膳食纤维和水。你需要了解主要营养素的来源和功能，并理解能量需求如何随年龄、性别和活动而变化。将探讨营养不良状况，如恶性营养不良、肥胖和坏血病等维生素缺乏症。
The human digestive system is a muscular tube running from mouth to anus. Mechanical digestion occurs through chewing and churning, while chemical digestion uses enzymes: amylase breaks down starch, proteases digest proteins, and lipase acts on fats. You will describe the roles of the liver (bile production) and pancreas, and explain how villi in the small intestine are adapted for efficient absorption of digested food.
人体消化系统是从口腔到肛门的肌肉管。物理消化通过咀嚼和蠕动实现，化学消化则依靠酶：淀粉酶分解淀粉，蛋白酶消化蛋白质，脂肪酶作用于脂肪。你将描述肝脏（产生胆汁）和胰脏的作用，并解释小肠绒毛如何适应高效吸收已消化的食物。
8. Transport in Animals | 动物体内的运输
The circulatory system consists of the heart, blood vessels and blood. You will label the chambers of the heart (atria and ventricles) and the major blood vessels, tracing the double circulation: pulmonary circulation to the lungs and systemic circulation to the rest of the body. The septum separates oxygenated and deoxygenated blood.
循环系统由心脏、血管和血液组成。你将标注心腔（心房与心室）和主要血管，追踪双循环途径：抵达肺部的肺循环和通往全身其他部位的体循环。室间隔将含氧血和缺氧血分开。
Arteries carry blood away from the heart under high pressure and have thick muscular walls; veins return blood at low pressure and possess valves; capillaries are one-cell thick for exchange of substances. You must know the components of blood: red blood cells (transport oxygen, contain haemoglobin), white blood cells (defence), platelets (clotting) and plasma (transport of carbon dioxide, nutrients, hormones and waste).
动脉在高压下将血液运离心脏，管壁厚而有肌肉；静脉以低压回送血液，并有瓣膜；毛细血管仅一个细胞厚，适于物质交换。你必须了解血液成分：红细胞（运输氧气，含血红蛋白）、白细胞（防御）、血小板（凝血）和血浆（运输二氧化碳、营养物质、激素和废物）。
9. Gas Exchange and Respiration | 气体交换与呼吸作用
The respiratory system is responsible for bringing oxygen into the body and removing carbon dioxide. You will identify the trachea, bronchi, bronchioles, alveoli and associated capillaries, and understand how the cartilage rings keep airways open while cilia and mucus trap and remove pathogens.
呼吸系统负责将氧气带入体内并排出二氧化碳。你将识别气管、支气管、细支气管、肺泡和相关毛细血管，并了解软骨环如何保持气道通畅，而纤毛和黏液则捕获和清除病原体。
Alveoli are the site of gas exchange by diffusion. Their adaptations include a large surface area, thin walls (one cell thick), a moist lining, and a dense capillary network. The movement of the ribs and diaphragm during inhalation and exhalation produces pressure changes that ventilate the lungs.
肺泡是气体交换通过扩散进行的场所。其适应性包括：巨大的表面积、薄壁（单层细胞）、湿润内衬和密集的毛细血管网络。吸气和呼气时，肋骨和膈肌的运动产生压力变化，从而实现肺的通气。
Respiration is the chemical release of energy from food, not simply 'breathing' ethanol + carbon dioxide) and in muscles during vigorous exercise (glucose → lactic acid). Comparisons of the yields of ATP are a key part of this topic.
呼吸作用是从食物中释放能量的化学过程，不仅仅是“呼吸”这一动作。你必须掌握有氧呼吸的文字方程式（葡萄糖 + 氧气 → 二氧化碳 + 水），以及酵母中无氧呼吸（葡萄糖 → 乙醇 + 二氧化碳）和在剧烈运动时肌肉中无氧呼吸（葡萄糖 → 乳酸）的方程式。比较它们产生的 ATP 数量是本主题的关键部分。
10. Coordination and Response | 协调与反应
ling along neurones. You will describe a simple reflex arc: receptor → sensory neurone → relay neurone → motor neurone → effector, and understand the role of synapses as junctions between neurones.
神经系统和激素系统共同协调对内外变化的反应。神经系统利用沿神经元传递的电脉冲。你将描述一个简单的反射弧：感受器 → 感觉神经元 → 中间神经元 → 运动神经元 → 效应器，并理解突触作为神经元之间连接点的作用。
The eye is a major sense organ; you will label the cornea, iris, lens, retina, optic nerve and explain pupil reflex and accommodation (focusing on near and distant objects). Hormones, such as adrenaline, are chemical messengers transported in the blood. Adrenaline increases heart rate and prepares the body for 'fight or flight'.
眼是重要的感觉器官；你将标注角膜、虹膜、晶状体、视网膜、视神经，并解释瞳孔反射和调节（对近处和远处物体的聚焦）。激素如肾上腺素是经血液运输的化学信使。肾上腺素能提高心率，使身体为“战斗或逃跑”做好准备。
Plants also respond to stimuli through tropisms. Phototropism (growth towards light) and gravitropism (growth in response to gravity) are controlled by the plant hormone auxin, which causes uneven growth rates in shoots and roots.
植物也通过向性运动对刺激做出反应。向光性（向光生长）和向地性（对重力的生长反应）由植物激素生长素控制，导致芽和根出现不均等的生长速率。
11. Reproduction and Inheritance | 生殖与遗传
Asexual reproduction produces genetically identical offspring from one parent, while sexual reproduction involves the fusion of male and female gametes to produce genetically varied offspring. You will compare the structures of insect-pollinated and wind-pollinated flowers, and describe the processes of pollination, fertilisation, and seed and fruit formation.
无性生殖由一个亲本产生基因相同的后代，而有性生殖则通过雌雄配子融合产生基因变异的后代。你将比较虫媒花和风媒花的结构，并描述传粉、受精以及种子和果实形成的过程。
In humans, the male reproductive system produces sperm and the female system releases ova. The menstrual cycle is regulated by hormones including oestrogen and progesterone. You should describe the events around ovulation and the roles of the placenta and amniotic fluid during pregnancy.
在人体中，男性生殖系统产生精子，女性生殖系统排出卵子。月经周期受雌激素和黄体酮等激素调控。你应描述排卵前后的事件，以及妊娠期间胎盘与羊水的作用。
Inheritance is based on DNA, which forms genes located on chromosomes. Key terms include genotype, phenotype, allele, dominant, recessive, homozygous and heterozygous. You will construct and interpret monohybrid genetic diagrams and Punnett squares to predict ratios of offspring, including examples of codominance like ABO blood groups.
遗传的基础是 DNA，DNA 形成基因并位于染色体上。关键术语包括基因型、表现型、等位基因、显性、隐性、纯合子和杂合子。你将构建并解读单基因杂交遗传图和庞纳特方格，以预测后代比例，包括共显性实例，如 ABO 血型系统。
12. Ecology and Human Influences on Ecosystems | 生态与人类对生态系统的影响
Ecology studies the interactions of organisms with each other and their environment. Key definitions include population, community, ecosystem and niche. Food chains and food webs show the transfer of energy, with arrows indicating the direction of energy flow. You will interpret pyramids of numbers, biomass and energy flow.
生态学研究生物体之间及其与环境间的相互作用。关键定义包括种群、群落、生态系统和生态位。食物链和食物网显示能量传递，箭头表示能量流动方向。你将解读数量金字塔、生物量金字塔和能量流动金字塔。
The carbon cycle and water cycle are fundamental to understanding nutrient recycling. Deforestation, pollution and intensive farming can disrupt these cycles. The enhanced greenhouse effect, caused by increased carbon dioxide and methane emissions, leads to global warming and climate change. Eutrophication results from excess fertilisers washing into waterways, causing algal blooms and oxygen depletion.
碳循环和水循环是理解养分循环的基础。森林砍伐、污染和集约化农业会干扰这些循环。二氧化碳和甲烷排放增加导致的温室效应增强，引发全球变暖和气候变化。富营养化是因过量肥料排入水体，导致藻类大量繁殖和氧气耗竭。
Sustainability and conservation are vital. You will explore strategies like captive breeding, habitat restoration and sustainable fishing quotas to protect endangered species and maintain biodiversity. The syllabus emphasises the role of individuals and governments in reducing the negative human impact on the environment.
可持续性与保护至关重要。你将探索圈养繁殖、栖息地恢复和可持续捕捞配额等策略，以保护濒危物种并维持生物多样性。大纲强调个人和政府在减少人类对环境的负面影响方面的作用。
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