📚 Year 8 CIE Biology: Vocabulary Quick Memory Guide | Year 8 CIE 生物：词汇术语速记指南
Mastering key terms is half the battle in Year 8 CIE Biology. This guide breaks down essential vocabulary into logical groups, pairs each term with a simple explanation, and offers mnemonic tips to help you recall them quickly in exams. From cell organelles to ecosystems, read on to build a solid foundation of biological language.
在Year 8 CIE生物中，掌握关键术语是成功的一半。本指南将核心词汇按逻辑分组，为每个术语配上简明解释，并提供记忆速记技巧，帮助你在考试中迅速回忆。从细胞器到生态系统，继续阅读，为生物语言打下坚实基础。
1. Cell Structure and Function | 细胞结构与功能
A cell is the basic unit of life. The two main types are prokaryotic cells (without a nucleus, e.g., bacteria) and eukaryotic cells (with a nucleus, e.g., plant and animal cells). Key organelles include the nucleus, cytoplasm, cell membrane, mitochondria, and ribosomes, each performing a distinct function. Plant cells also have a cell wall, chloroplasts, and a large central vacuole.
细胞是生命的基本单位。主要分两类：原核细胞（无细胞核，如细菌）和真核细胞（有细胞核，如动植物细胞）。关键细胞器包括细胞核、细胞质、细胞膜、线粒体和核糖体，各自执行独特功能。植物细胞还有细胞壁、叶绿体和大中央液泡。
Nucleus: controls cell activities and contains genetic material (DNA). Think of it as the 'brain' of the cell.
细胞核：控制细胞活动并含有遗传物质（DNA）。可记作细胞的“大脑”。
Mitochondria: site of aerobic respiration, producing energy. Remember 'mighty mitochondria' – powerhouses.
线粒体：有氧呼吸的场所，产生能量。记住“能量工厂”的形象。
Chloroplast: contains chlorophyll for photosynthesis in plant cells. Visualise tiny green solar panels.
叶绿体：在植物细胞中含有叶绿素，进行光合作用。想象成微型绿色太阳能板。
Cell membrane: selectively permeable barrier controlling what enters and leaves the cell – the 'gatekeeper'.
细胞膜：选择透过性屏障，控制物质进出——细胞的“守门人”。
Ribosomes: protein synthesis factories, either free in cytoplasm or attached to rough endoplasmic reticulum.
核糖体：蛋白质合成工厂，游离在细胞质或附着在粗面内质网上。
2. Tissues, Organs and Systems | 组织、器官与系统
n organ systems to perform life processes. Understanding hierarchy helps you link vocabulary: cell → tissue → organ → organ system → organism.
结构和功能相似的细胞聚集形成组织。不同组织协同工作形成器官，器官在器官系统中合作完成生命活动。理解层次结构有助于串联词汇：细胞 → 组织 → 器官 → 器官系统 → 生物体。
Tissue: a group of similar cells carrying out a shared function, e.g., muscle tissue contracts; xylem tissue transports water in plants.
组织：一组相似的细胞执行共同功能，例如肌肉组织收缩；木质部组织在植物中运输水分。
Organ: a structure made of different tissues working together, e.g., the stomach contains muscular tissue, glandular tissue, and epithelial tissue.
器官：由不同组织组成的结构协同工作，例如胃包含肌肉组织、腺体组织和上皮组织。
Organ system: a group of organs that perform a major function, such as the digestive system, respiratory system, or circulatory system.
器官系统：一组执行主要功能的器官，如消化系统、呼吸系统或循环系统。
3. Classification of Living Things | 生物分类
a), and Protoctists. Within each kingdom, the hierarchy goes: Kingdom → Phylum → Class → Order → Family → Genus → Species. The binomial naming system (Genus species) is universal. A popular mnemonic is 'King Philip Came Over For Good Soup'.
生物学家根据共同特征对生物进行分类。主要界包括动物界、植物界、真菌界、原核生物界（细菌）和原生生物界。在界内，分类等级为：界 → 门 → 纲 → 目 → 科 → 属 → 种。双名命名法（属名+种名）是通用规则。流行的助记口诀是“King Philip Came Over For Good Soup”。
Species: a group of organisms that can interbreed to produce fertile offspring. Remember the 'fertile offspring' condition.
物种：能够相互交配并产生可育后代的一群生物。记住“可育后代”这一条件。
Binomial name: two-part Latin name, e.g., Homo sapiens (humans). Always italicised or underlined; first part is Genus, second is species.
双名：两部分拉丁名，如智人（Homo sapiens）。始终用斜体或下划线；第一部分是属名，第二部分是种名。
Vertebrate: animal with a backbone; the five vertebrate classes are fish, amphibians, reptiles, birds, and mammals. Use the first letters 'FARMB' to recall them.
脊椎动物：有脊柱的动物；五大类群为鱼类、两栖类、爬行类、鸟类和哺乳类。用首字母“FARMB”记忆。
4. Photosynthesis and Plant Nutrition | 光合作用与植物营养
rapped by chlorophyll. The balanced chemical equation is 6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂. Photosynthesis happens inside chloroplasts. The glucose produced is used for respiration, stored as starch, or converted into cellulose, proteins, and lipids.
光合作用是植物制造自身食物的过程。文字方程式为：二氧化碳 + 水 → 葡萄糖 + 氧气，需要叶绿素捕获的光能。平衡化学方程式为 6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂。光合作用发生在叶绿体内。产生的葡萄糖用于呼吸作用，以淀粉形式储存，或转化为纤维素、蛋白质和脂质。
Limiting factors: light intensity, carbon dioxide concentration, and temperature affect the rate. Think 'LCT' – Light, CO₂, Temperature.
限制因素：光照强度、二氧化碳浓度和温度影响速率。用“LCT”来记：光照、CO₂、温度。
Chlorophyll: green pigment that absorbs light energy. Like a solar panel's coating. Without it, the plant cannot photosynthesise.
叶绿素：吸收光能的绿色色素。如同太阳能板的涂层。没有它，植物无法进行光合作用。
Starch test: iodine solution turns blue-black in the presence of starch, proving photosynthesis has occurred in a leaf.
淀粉检测：遇淀粉碘液变为蓝黑色，证明叶片中发生了光合作用。
5. Human Digestive System | 人体消化系统
The digestive system breaks down large insoluble food molecules into small soluble ones that can be absorbed into the blood. Key organs include the mouth (chewing, saliva with amylase), oesophagus (peristalsis), stomach (acid and protease), small intestine (digestion and absorption), large intestine (water absorption), and liver/pancreas as accessory organs.
消化系统将大而不可溶的食物分子分解为小且可溶的分子，以便被血液吸收。关键器官包括口腔（咀嚼，含淀粉酶的唾液）、食道（蠕动）、胃（胃酸和蛋白酶）、小肠（消化和吸收）、大肠（水分吸收）以及作为辅助器官的肝脏和胰腺。
Peristalsis: wave-like muscle contractions that push food through the gut. Imagine a tube of toothpaste being squeezed along.
蠕动：波浪式肌肉收缩，推动食物通过消化道。想象一支牙膏被从底端挤压向前。
Enzyme: biological catalyst that speeds up digestion without being used up. Amylase breaks down starch; protease breaks down protein; lipase breaks down fats. 'A-P-L' – Amylase Starch, Protease Protein, Lipase Lipids.
酶：生物催化剂，加速消化而自身不被消耗。淀粉酶分解淀粉；蛋白酶分解蛋白质；脂肪酶分解脂肪。用“A-P-L”来对应。
Villi: tiny finger-like projections in the small intestine that increase surface area for absorption. Picture fluffy towels soaking up water.
绒毛：小肠内的指状微小突起，增加吸收面积。想象成蓬松的毛巾吸水。
6. Circulatory System | 循环系统
The circulatory system transports oxygen, nutrients, hormones, and waste products around the body. It consists of the heart, blood vessels (arteries, veins, capillaries), and blood. The heart is a double pump: the right side pumps deoxygenated blood to the lungs, the left side pumps oxygenated blood to the rest of the body. Valves prevent backflow of blood.
循环系统将氧气、营养物质、激素和废物输送到全身。它由心脏、血管（动脉、静脉、毛细血管）和血液组成。心脏是一个双泵：右侧将缺氧血泵至肺部，左侧将富氧血泵至全身。瓣膜防止血液倒流。
Arteries: carry blood away from the heart; thick, elastic walls to withstand high pressure. Think 'A for Away'. Veins carry blood toward the heart and have valves.
动脉：将血液带离心脏；管壁厚而有弹性，以承受高压。记“A代表离开（Away）”。静脉将血液送回心脏并有瓣膜。
Red blood cells: contain haemoglobin, which binds oxygen. No nucleus in humans – biconcave shape for maximum surface area. Visualise red doughnuts without a hole.
红细胞：含有血红蛋白，能结合氧气。人类红细胞无核——双凹圆盘形以获得最大表面积。想象成没有洞的红色甜甜圈。
Plasma: the liquid part of blood, transporting dissolved substances like hormones, nutrients, and waste. Think 'watery courier'.
血浆：血液的液体部分，运输溶解物质如激素、养分和废物。想象为“水性快递员”。
7. Respiratory System | 呼吸系统
arbon dioxide + water (+ energy). Anaerobic respiration in humans produces lactic acid with less energy; in yeast, it produces ethanol and carbon dioxide (fermentation). Gas exchange happens in the alveoli of the lungs.
呼吸不仅仅是吸气和呼气；它是细胞内从葡萄糖释放能量的过程。有氧呼吸使用氧气：葡萄糖 + 氧气 → 二氧化碳 + 水（+能量）。人体无氧呼吸产生乳酸，能量较少；酵母菌无氧呼吸产生乙醇和二氧化碳（发酵）。气体交换发生在肺部的肺泡中。
Alveoli: tiny air sacs with thin walls and a rich blood supply, maximising diffusion of oxygen and carbon dioxide. Think 'grape-like clusters'.
肺泡：微小的气囊，壁薄且有丰富的血液供应，使氧气和二氧化碳扩散最大化。想象成“葡萄状的簇”。
Diaphragm and intercostal muscles: work together to change lung volume. When they contract, lung volume increases, pressure drops, and air rushes in (inhalation). Exhale: muscles relax.
膈肌和肋间肌：协同改变肺容积。收缩时，肺容积增大，压力降低，空气吸入（吸气）。呼气：肌肉放松。
Cilia and mucus: in the trachea and bronchi trap dust and microbes, waving them up to the throat. Picture tiny brooms sweeping out the airways.
纤毛和黏液：气管和支气管内的结构捕捉灰尘和微生物，并向上推送至咽喉。想象成微型扫帚清扫气道。
8. Ecology and Environment | 生态与环境
. A food chain shows energy flow: producer → primary consumer → secondary consumer → tertiary consumer. A food web interlinks several chains. Energy decreases at each trophic level (only about 10% is passed on).
生态学研究生物与其环境之间的相互作用。关键术语包括栖息地、种群、群落、生态系统和生物群系。食物链显示能量流动：生产者 → 初级消费者 → 次级消费者 → 三级消费者。食物网连接多个食物链。每个营养级的能量递减（仅约10%传递）。
Producer: an organism that makes its own food, usually a plant via photosynthesis. Starts every food chain.
生产者：自己制造食物的生物，通常是植物通过光合作用。是每条食物链的起点。
Decomposer: bacteria and fungi that break down dead material, recycling nutrients. Remember the 'clean-up crew'.
分解者：细菌和真菌分解死物，回收养分。记作“清理小分队”。
Biodiversity: the variety of living things in an area. High biodiversity makes ecosystems more stable.
生物多样性：一个区域内生物的多样性。高生物多样性使生态系统更稳定。
9. Reproduction in Plants | 植物繁殖
Flowering plants reproduce sexually via pollination, fertilisation, and seed dispersal. Pollination is the transfer of pollen from anther to stigma; it can be wind-pollinated or insect-pollinated. After fertilisation, the ovule becomes a seed and the ovary becomes a fruit. Asexual reproduction in plants includes runners, tubers, and bulbs.
开花植物通过授粉、受精和种子传播进行有性繁殖。授粉是花粉从花药传到柱头的过程；可以是风媒或虫媒。受精后，胚珠发育成种子，子房发育成果实。无性繁殖包括匍匐茎、块茎和鳞茎。
Stamen: male reproductive part, consisting of anther and filament. 'Sta-men' – think 'stay, man' – male.
雄蕊：雄性生殖器官，由花药和花丝组成。用“雄”字关联男性。
Pistil (carpel): female reproductive part, comprising stigma, style, and ovary. 'Pistil' sounds like 'pistol' – the ovary protects the seeds like a holster.
雌蕊：雌性生殖器官，由柱头、花柱和子房组成。可以把子房想象成种子枪套。
Germination: the process by which a seed develops into a new plant. Conditions needed: water, oxygen, and warmth (WOW).
萌发：种子发育成新植物的过程。所需条件：水分、氧气和适宜温度（WOW）。
10. Genetics Basics | 遗传学基础
Genetics explains how traits are passed from parents to offspring. DNA is the molecule carrying genetic code, arranged in chromosomes inside the nucleus. A gene is a section of DNA that codes for a particular protein. Alleles are different versions of a gene. Dominant alleles mask recessive ones when both are present.
遗传学解释性状如何从亲代传给子代。DNA是携带遗传密码的分子，在细胞核内组成染色体。基因是DNA上编码特定蛋白质的片段。等位基因是同一基因的不同形式。显性等位基因在两者同时存在时掩盖隐性等位基因。
Homozygous: two identical alleles for a trait (e.g., BB or bb). 'Homo' means same. Heterozygous: one dominant and one recessive allele (Bb).
纯合：控制某性状的两个等位基因相同（如BB或bb）。“纯”意为相同。杂合：一个显性一个隐性（Bb）。
Genotype vs Phenotype: genotype is the genetic makeup (letters); phenotype is the physical characteristic observed (e.g., brown eyes). 'Geno-type sounds like gene-code; Pheno-type is what you can Photograph.
基因型 vs 表现型：基因型是基因组成（字母）；表现型是观察到的物理特征（如棕色眼睛）。基因型是“基因代码”；表现型是“可以拍照的样子”。
Punnett square: a grid used to predict the probability of offspring genotypes. Draw the parental alleles along the top and left, then fill the boxes.
庞纳特方格：用于预测子代基因型概率的表格。把亲本等位基因写在顶端和左侧，然后填充方格。
11. Microorganisms and Disease | 微生物与疾病
Microorganisms (microbes) include bacteria, viruses, fungi, and protoctists. Some are beneficial (e.g., gut bacteria, yeast in bread), while others cause disease. Pathogens are microorganisms that cause infectious diseases. The body defends with physical barriers (skin, mucus), chemicals (stomach acid), and immune responses (white blood cells producing antibodies).
微生物（Microbes）包括细菌、病毒、真菌和原生生物。有些是有益的（如肠道细菌、面包酵母），而另一些会引起疾病。病原体是引起传染病的微生物。人体的防御包括物理屏障（皮肤、黏液）、化学物质（胃酸）和免疫反应（白细胞产生抗体）。
Antibiotics: medicines that kill bacteria but not viruses. Remember 'anti-bio-tic' – against bacterial life. Overuse can lead to antibiotic-resistant bacteria like MRSA.
抗生素：能杀死细菌但对病毒无效的药物。记忆“抗-生-素”——对抗细菌生命。过度使用会导致耐抗生素细菌，如MRSA。
Vaccination: introduces a harmless form of the pathogen to stimulate white blood cells to produce memory cells and antibodies, providing future immunity. Think 'training the army'.
疫苗接种：引入无害的病原体形式，刺激白细胞产生记忆细胞和抗体，提供未来的免疫力。想象成“训练军队”。
Hygiene practices: washing hands, using clean water, and cooking food thoroughly reduce the spread of pathogens. Keep it clean.
卫生习惯：洗手、使用洁净水、彻底煮熟食物减少病原体传播。保持清洁。
12. Key Vocabulary Memory Techniques | 关键词汇记忆技巧
Combine the strategies below to make biology vocabulary stick. Use flashcards with the term on one side and definition + mnemonic on the other. Create mind maps grouping terms by topic. Teach a friend – explaining out loud solidifies your own understanding. Regularly quiz yourself with quick spelling tests and fill-in-the-gap exercises. Visualise images (e.g., mitochondria as power stations). Sing or rap the terms to recall rigid formulas. Remember, consistent revision in small chunks is more effective than cramming.
将下列策略结合起来，让生物词汇牢牢记住。使用闪卡，一面写术语，另一面写定义和记忆技巧。制作思维导图，按主题分组术语。教给朋友——大声讲解能巩固自己的理解。定期用小测验、拼写测试和填空练习自我检测。可视化图像（比如，线粒体是发电站）。编成歌谣或说唱来回忆固定公式。记住，少量多次的持续复习比考前突击有效得多。
Acronyms: turn list items into a memorable word or phrase. For example, MRS GREN for life processes: Movement, Respiration, Sensitivity, Growth, Reproduction, Excretion, Nutrition.
首字母缩略词：将列表项变成易记的单词或短语。例如，生命活动的 MRS GREN：运动、呼吸、感应、生长、生殖、排泄、营养。
Chunking: break long words into smaller parts. 'Mitochondria' → 'mito-chondria'; 'photosynthesis' → 'photo-synthesis' (light-making). This reduces intimidation.
分块法：把长单词拆成小部分。“Mitochondria”→“mito-chondria”；“photosynthesis”→“photo-synthesis”（光-合成）。这样降低难度。
Storytelling: create a little story linking related terms. For the digestive system: 'A mouthful of sandwich met amylase who started chopping starch, then the stomach acid and protease partied…'
编故事：编一个小故事串联相关术语。消化系统：'一口三明治遇到了淀粉酶，淀粉酶开始切碎淀粉，然后胃酸和蛋白酶开了派对……'
Published by TutorHao | Biology Revision Series | aleveler.com
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