📚 Year 11 SQA Biology: Vocabulary & Terminology Quick Memory Guide | Year 11 SQA 生物：词汇术语速记指南
Biology at SQA National 5 and beyond can sometimes feel like learning a second language. The sheer number of scientific terms – from mitochondria to meiosis, from photosynthesis to phagocytosis – can be overwhelming. However, once you recognise the patterns in these words, they stop being random strings of letters and start telling you a story. This guide breaks down key vocabulary into logical groups and shares memory hooks that will help you recall definitions with confidence, whether you are preparing for an end‑of‑topic test or the final SQA exam.
在 SQA National 5 及更高水平的生物学习中，你可能会觉得自己在学第二门语言。从线粒体到减数分裂、从光合作用到吞噬作用，数量繁多的科学术语常常令人望而生畏。不过一旦你识别出这些单词内部的结构规律，它们就不再是无意义的字母组合，而是会向你讲述一段故事。本指南将关键术语划分成逻辑清晰的组别，并分享能帮助你自信回忆定义的记忆窍门，无论你是在准备单元测验还是最终的 SQA 考试，这些方法都会很有用。
1. Word‑Building Blocks: The Power of Roots, Prefixes and Suffixes | 构词积木：词根、前缀和后缀的力量
Many biology terms are built from Greek and Latin pieces. Once you learn the most common ones, you can often guess a word’s meaning. For instance, 'photo-' means light, 'synthesis' means putting together – so photosynthesis is 'putting together using light'. Similarly, 'cyto-' refers to cell, 'plasm' to substance, giving cytoplasm, the jelly‑like substance inside cells. A prefix like 'endo-' (inner) combines with 'symbiosis' (living together) to form endosymbiosis – one organism living inside another. Learning around twenty such building blocks gives you a key to unlock hundreds of words.
许多生物术语都是借助希腊语和拉丁语成分构建的。一旦掌握最常见的那些，你通常就能猜出词语的含义。例如 'photo-' 意为光，'synthesis' 意为组合——因此 photosynthesis（光合作用）就是“利用光来组合”。类似地，'cyto-' 指细胞，'plasm' 指物质，构成 cytoplasm（细胞质），即细胞内的凝胶状物质。前缀 'endo-'（内部的）与 'symbiosis'（共生）结合构成 endosymbiosis（内共生）——一种生物生活在另一种生物体内。学会大约二十个这样的构词积木，你就能打开数百个术语的大门。
2. Cells and Organelles: Tiny Factories with Big Names | 细胞与细胞器：名称响亮的小工厂
The nucleus (from 'nuc-' meaning kernel) stores DNA; it is often remembered as the 'control centre'. Mitochondrion (plural mitochondria) has 'mito-' (thread) and 'chondrion' (granule) – thread‑like granules that are the site of aerobic respiration. Remember: 'mighty mitochondria' releases energy. Ribosomes, tiny structures with no membrane, are the protein builders – 'ribo' rhymes with 'bio', as in building blocks of life. The cell membrane is a selectively permeable barrier; imagine a bouncer at a club who only lets certain guests in. Chloroplasts, with 'chloro-' meaning green, contain chlorophyll and capture light energy for photosynthesis.
细胞核（nucleus，源自意为核的 'nuc-'）储存 DNA；常被记为“控制中心”。线粒体（mitochondrion，复数为 mitochondria）中 'mito-'（线）与 'chondrion'（颗粒）结合，指进行有氧呼吸的线状颗粒。请记住：“强大的线粒体”释放能量。核糖体（ribosome）是没有膜的小结构，是蛋白质的建造者——'ribo' 与“生物”押韵，就好比生命的积木。细胞膜是一道选择透过性屏障；想象一下夜总会的门卫，只允许特定客人进入。叶绿体（chloroplast）的 'chloro-' 意为绿色，含有叶绿素（chlorophyll），为光合作用捕获光能。
3. Biomolecules: The Chemical Language of Life | 生物分子：生命的化学语言
Carbohydrates contain carbon, hydrogen and oxygen; 'carbo-' points to carbon, 'hydrate' to water. The simplest are monosaccharides like glucose, while starch and glycogen are polysaccharides – many sugar units linked together. Proteins are made of amino acids folded into specific shapes; think of 'amino' as a building block and 'protein' as primary importance. Lipids (fats and oils) are made of glycerol and three fatty acids; an easy phrase is 'lipids are large insulators'. Enzymes, which are protein catalysts, speed up reactions – 'enzyme' sounds like 'in‑zyme', as in helping the chemical reaction get into motion.
碳水化合物（carbohydrate）包含碳、氢、氧；'carbo-' 指向碳，'hydrate' 指向水。最简单的形式是像葡萄糖这样的单糖，而淀粉和糖原是多糖——许多糖单元连接在一起。蛋白质（protein）由氨基酸折叠成特定形状而成；可以把“amino”看作积木，“protein”则代表首要重要性。脂质（lipid，脂肪和油）由甘油和三个脂肪酸组成；简便的短语是“脂质是大型绝缘体”。酶（enzyme）是蛋白质催化剂，能加速反应——'enzyme' 听起来像“in‑zyme”，仿佛是推动化学反应开始运转。
4. Enzymes and Metabolism: Keys, Locks and Factors | 酶与新陈代谢：钥匙、锁和影响因素
The active site is the region where the substrate binds – think of a lock and key mechanism. 'Substrate' comes from 'sub-' (under) and 'stratum' (layer), the molecule acted upon. When the active site changes shape due to heat or pH, the enzyme becomes denatured – 'de‑nature' means it loses its natural shape. Optimum temperature is the temperature at which the enzyme works fastest. 'Metabolism' sums up all chemical reactions in the body; it is easier to recall when you split it into 'meta-' (beyond) and 'bolism' (throw), as in throwing materials around to keep the body going.
活性位点是底物结合的区域——可以想象成锁钥机制。'Substrate' 由意为“在下方”的 'sub-' 和意为“层”的 'stratum' 组合而成，指被作用的分子。当活性位点因高温或 pH 变化而改变形状时，酶发生变性（denatured）——'de‑nature' 意思是失去了天然形状。最适温度是酶工作最快的温度。新陈代谢（metabolism）概括了体内全部化学反应；把它拆分为 'meta-'（超越）和 'bolism'（抛掷）——就像在身体里到处抛掷材料以维持运转，这样更容易记忆。
5. Cell Division: Making Copies Correctly | 细胞分裂：正确复制
Mitosis produces two genetically identical daughter cells for growth and repair – remember 'mi‑to‑sis' sounds like 'my two sis', as in one cell splitting into two. Chromosomes are tightly coiled DNA; 'chromo-' means colour, 'some' means body, because they picked up stain under the microscope. A diploid cell has two sets of chromosomes (2n), while a haploid cell (n) has only one set – 'di' means two, 'haplo' means single. Meiosis is the reduction division that produces gametes with half the chromosome number; 'meiosis' comes from 'meio‑' (lessen). Crossing over during meiosis shuffles genetic information, increasing variation.
有丝分裂（mitosis）产生两个遗传上完全相同的子细胞，用于生长和修复——'mi‑to‑sis' 听起来像“my two sis”，一个细胞分裂成两个。染色体（chromosome）是紧密缠绕的 DNA；'chromo-' 意为颜色，'some' 意为体，因为它们在显微镜下会吸附染料。二倍体细胞拥有两套染色体（2n），而单倍体细胞（n）仅有一套——'di' 表示二，'haplo' 表示单。减数分裂（meiosis）是一种产生配子的减数分裂，使染色体数目减半；'meiosis' 源自意为“减少”的 'meio-'。减数分裂过程中的交叉互换能打乱遗传信息，增加变异。
6. Genetics: The Alphabet of Inheritance | 遗传学：遗传的字母表
A gene is a section of DNA that codes for a protein. Alleles are different versions of the same gene – think 'allele' sounds like 'alternate'. A dominant allele masks a recessive allele; dominance can be seen in a capital letter. Genotype refers to the actual alleles present, while phenotype is the observable characteristic – 'pheno' means show. Homozygous means having two identical alleles (AA or aa), heterozygous means two different alleles (Aa). A monohybrid cross follows one characteristic; 'mono‑' one, 'hybrid' mixed. Polygenic inheritance involves many genes controlling a single trait – 'poly' means many.
基因（gene）是一段编码蛋白质的 DNA 片段。等位基因（allele）是同一基因的不同形式——'allele' 听起来像“alternate”（交替）。显性等位基因会遮盖隐性等位基因；显性可用大写字母表示。基因型（genotype）指实际存在的等位基因，而表现型（phenotype）是可见的特征——'pheno' 意为显示。纯合子（homozygous）指拥有两个相同的等位基因（AA 或 aa），杂合子（heterozygous）则指两个不同的等位基因（Aa）。单因子杂交（monohybrid cross）只跟踪一项特征；'mono-' 意为单一，'hybrid' 意为混合。多基因遗传（polygenic inheritance）涉及多个基因控制一个性状——'poly' 意为许多。
7. DNA and Protein Synthesis: The Code of Life | DNA 与蛋白质合成：生命密码
DNA (deoxyribonucleic acid) is a double helix – the 'de‑oxy‑' nine (G). In RNA, uracil (U) replaces thymine. Transcription occurs in the nucleus when a segment of DNA is copied into messenger RNA (mRNA). Translation takes place at ribosomes, where transfer RNA (tRNA) decodes the mRNA into a chain of amino acids. Remember the flow: DNA → mRNA → protein; 'transcription' writes the code in a similar language, 'translation' changes it into a different language (amino acid sequence).
DNA（脱氧核糖核酸）是双螺旋结构——'de‑oxy‑' 告诉你它比 RNA 少了一个氧原子。它使用四种碱基携带遗传指令：腺嘌呤（A）、胸腺嘧啶（T）、胞嘧啶（C）和鸟嘌呤（G）。在 RNA 中，尿嘧啶（U）取代了胸腺嘧啶。转录（transcription）发生在细胞核内，一段 DNA 被复制成信使 RNA（mRNA）。翻译（translation）在核糖体上进行，转运 RNA（tRNA）将 mRNA 解码为氨基酸链。记住这一流程：DNA → mRNA → 蛋白质；'transcription' 用相近的语言书写代码，'translation' 则将其转变成另一种语言（氨基酸序列）。
8. Ecology: Relationships and Energy Flow | 生态学：关系与能量流动
An ecosystem is a community of organisms plus their physical environment. The terms 'biotic' (living) and 'abiotic' (non‑living) factors are easy: 'bio' = life, 'a‑' = without. A habitat is where an organism lives – think 'habit' umers eat producers, secondary consumers eat primary consumers. A food web is a network of interconnected food chains. Decomposers break down dead material, recycling nutrients. Pyramids of numbers, biomass and energy show relative amounts at each trophic level; remember 'trophic' means feeding.
生态系统（ecosystem）是生物群落及其非生物环境的组合。生物（biotic）和非生物（abiotic）因素很容易区分：'bio' 表示生命，'a‑' 表示无。栖息地（habitat）是生物居住的地方——把 'habit' 想成地址。生态位（niche）是它在生态系统中的职责或角色。生产者（植物）捕获能量制造食物。消费者吃掉其他生物：初级消费者吃生产者，次级消费者吃初级消费者。食物网是多条食物链相互连接的网络。分解者分解死去的物质，回收养分。数量金字塔、生物量金字塔和能量金字塔展示每一营养级的相对数量；记住 'trophic' 意为取食。
9. Evolution and Natural Selection: Survival of the Best Fitted | 进化与自然选择：适者生存
Evolution is the change in inherited traits within a population over generations. Natural selection is the mechanism: organisms with advantageous alleles are more likely to survive and reproduce. 'Variation' is key – without differences, there would be nothing to select. A mutation is a random change in DNA; it can be 'mute' (silent) but sometimes creates a new allele. Adaptation is a feature that improves an organism's chance of survival. Speciation occurs when populations become so different they can no longer interbreed; 'speci‑' refers to species. Antibiotic resistance in bacteria is a clear example of natural selection in action today.
进化（evolution）是种群内遗传性状世代间发生的变化。自然选择（natural selection）是其机制：拥有有利等位基因的生物更可能存活并繁殖。变异（variation）是关键——没有差异，就没有可供选择的对象。突变（mutation）是 DNA 随机的改变；它可以是沉默的，但有时会创造出新的等位基因。适应（adaptation）是提升生物生存机会的特征。物种形成（speciation）发生在种群差异大到无法再相互交配时；'speci‑' 指向物种。细菌的抗生素耐药性是现今自然选择正在起作用的清晰例子。
10. Human Body Systems: Terms for Transport, Defence and Control | 人体系统：运输、防御与调控术语
In the circulatory system, arteries carry blood away from the heart; think 'A' for Away. Veins bring blood back; 'vein' rhymes with 'in'. Capillaries are tiny vessels where exchange happens – 'capillary' sounds like 'capillary action', tiny spaces. Phagocytosis is the process where white blood cells engulf pathogens; 'phago-' means eating, 'cyto' cell, so 'cell‑eating'. Lymphocytes produce antibodies, specific proteins that fit antigens like a lock and key. In the nervous system, synapses are gaps between neurones; 'synapse' comes from 'syn-' (together) and 'hapsis' (joining). Hormones are chemical messengers released by endocrine glands; 'hormone' shares its root with 'hormao', meaning to excite or set in motion.
在循环系统中，动脉（artery）将血液带离心脏；记住 'A' 对应 Away（离开）。静脉（vein）将血液送回；'vein' 与 'in'（进入）押韵。毛细血管（capillary）是发生物质交换的微小血管——'capillary' 听起来像毛细现象，形容微小空间。吞噬作用（phagocytosis）是白细胞吞噬病原体的过程；'phago-' 意为吃，'cyto' 指细胞，即“细胞吞噬”。淋巴细胞产生抗体（antibody），这是一种能像锁钥一样契合抗原的特殊蛋白质。在神经系统中，突触（synapse）是神经元之间的间隙；'synapse' 来自 'syn-'（共同）和 'hapsis'（连接）。激素（hormone）是由内分泌腺释放的化学信使；'hormone' 与意为“激发”或“启动”的希腊词根同源。
11. Quick‑fire Memory Strategies for Biology Terms | 生物术语快速记忆策略
Try the 'story method': link similar‑sounding words into a silly image. For 'endocytosis', imagine an envelope being pulled into a cell. Use flashcards with the term on one side and a simple drawing on the other – visual cues are more memorable. Create acronyms: the order of classification – Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species – can become 'Dear King Philip Came Over For Good Soup'. Repeat terms aloud and explain them to a friend; teaching is the best revision. Finally, always link the word back to its Greek or Latin roots – once the root is clear, the definition sticks.
试试“故事法”：把发音相近的词语编织成一个滑稽的画面。对于“内吞作用”（endocytosis），可以想象一个信封被拉进细胞。使用抽认卡，一面写术语，另一面画上简单的示意图——视觉线索更容易记住。编造首字母缩略词：分类阶元——域、界、门、纲、目、科、属、种——可以记成“Dear King Philip Came Over For Good Soup”。大声重复术语并向朋友解释；教学是最好的复习。最后，始终把词语与其希腊或拉丁词根联系起来——一旦词根弄明白了，定义自然就会牢牢记住。
12. Commonly Confused Pairs: Setting Them Straight | 常见易混淆术语对比：明辨差异
Mitosis vs Meiosis: Mitosis makes two identical diploid cells; Meiosis makes four non‑identical haploid gametes. Gene vs Allele: A gene is a stretch of DNA that codes for a trait; an allele is a variant of that gene. Diffusion vs Osmosis: Diffusion is the net movement of any particles from high to low concentration; Osmosis is specifically the movement of water across a partially permeable membrane. Chromosome vs Chromatid: A chromosome is a single DNA molecule before replication; a chromatid is one of the two identical strands after replication. Excretion vs Egestion: Excretion removes metabolic waste from cells; egestion removes undigested food from the gut. Keeping these straight wins easy marks in exams.
有丝分裂 vs 减数分裂：有丝分裂产生两个相同的二倍体细胞；减数分裂产生四个不同的单倍体配子。基因 vs 等位基因：基因是编码某一性状的一段 DNA；等位基因是该基因的不同形式。扩散 vs 渗透：扩散是任何颗粒从高浓度向低浓度的净移动；渗透专指水穿过部分透性膜的运动。染色体 vs 染色单体：染色体是复制前的单个 DNA 分子；染色单体是复制后两条相同姐妹染色单体中的一条。排泄 vs 排遗：排泄清除细胞产生的代谢废物；排遗则清除消化道内未被消化的食物。辨清这些差异能在考试中轻松得分。
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