📚 Year 12 CCEA Biology: Key Terminology Quick Memorisation Guide | CCEA 12年级生物：词汇术语速记指南
Mastering the vocabulary of CCEA Year 12 Biology is essential for acing your exams. This guide breaks down key terms into manageable chunks and provides clever memory tricks to help you recall them under pressure.
掌握 CCEA 12年级生物的词汇是考取高分的基石。本指南将关键词汇拆解为容易消化的部分，并提供巧妙的记忆技巧，帮助你在考试压力下轻松回忆。
1. Why Memorising Terminology Matters | 为什么要记忆术语
Biological terms are the building blocks of exam answers. When you use precise language like 'hydrophilic' instead of 'water-loving', you demonstrate depth of understanding. Examiners look for correct usage of words such as 'denatured', 'active site' and 'osmosis', which can earn you valuable marks that more vague descriptions would miss.
生物学术语是考试答案的构建模块。使用像 'hydrophilic'（亲水的）这样精确的语言，而不是说 '喜水的'，能展现你理解的深度。考官会留意 'denatured'（变性）、'active site'（活性位点）和 'osmosis'（渗透）等词语的正确使用，恰当的表述能为你赢得那些模糊描述无法获得的分数。
2. Decoding Prefixes and Suffixes | 破解前缀与后缀
Many biological terms are built from predictable word parts. Learning the most common prefixes and suffixes will help you guess meanings of unfamiliar words. For example, 'hyper-' means above or excessive (hypertonic), 'hypo-' means below or deficient (hypotonic), and 'iso-' means equal (isotonic). The suffix '-ase' indicates an enzyme (amylase, catalase), while '-ose' signals a sugar (glucose, sucrose). 'Mono-' means one, 'di-' two, and 'poly-' many, which instantly explains monosaccharide, disaccharide and polysaccharide.
许多生物学术语是由可预测的词根构成的。学习最常见的前缀和后缀将帮助你猜测陌生单词的含义。例如，'hyper-' 表示高于或过多（hypertonic 高渗），'hypo-' 表示低于或不足（hypotonic 低渗），'iso-' 表示相等（isotonic 等渗）。后缀 '-ase' 表示酶（amylase 淀粉酶），而 '-ose' 表示糖（glucose 葡萄糖）。'Mono-' 代表一，'di-' 代表二，'poly-' 代表多，这立刻解释了 monosaccharide（单糖）、disaccharide（二糖）和 polysaccharide（多糖）。
| Prefix/Suffix | Meaning | Example |
|---|---|---|
| endo- | inside | endocytosis |
| exo- | outside | exocytosis |
| glyco- | sugar | glycogen |
| lipo- | fat | phospholipid |
掌握词根法能极大降低记忆负担，遇到生词时先拆解，往往能猜出大致类别。
3. Cell Structure Vocabulary | 细胞结构词汇
The cell is the basic unit of life, and CCEA expects you to use the full names of organelles confidently. Nucleus stores genetic material; mitochondria are the site of aerobic respiration; ribosomes synthesise proteins; the rough endoplasmic reticulum (RER) is studded with ribosomes and modifies proteins, while the smooth ER synthesises lipids. The Golgi apparatus modifies and packages proteins into vesicles. Plant cells also have a cellulose cell wall, a large permanent vacuole and chloroplasts for photosynthesis. To remember that mitochondria have a double membrane and cristae, think 'Mighty Mitochondria Muster More Energy' – the folded inner membrane increases surface area.
细胞是生命的基本单位，CCEA 要求你自信地使用各细胞器的全称。细胞核储存遗传物质；线粒体是有氧呼吸的场所；核糖体合成蛋白质；粗面内质网附有核糖体并修饰蛋白质，滑面内质网则合成脂类。高尔基体修饰蛋白质并将其包装成囊泡。植物细胞还有纤维素细胞壁、大液泡和进行光合作用的叶绿体。要记住线粒体有双层膜和嵴，想象 'Mighty Mitochondria Muster More Energy'（强大的线粒体聚集更多能量）——折叠的内膜增大了表面积。
- Nucleus: double membrane, contains DNA. / 细胞核：双层膜，含有 DNA。
- Mitochondrion: site of ATP production, cristae. / 线粒体：ATP 产生场所，具嵴。
- Ribosome: 70S in prokaryotes and organelles, 80S in eukaryote cytoplasm. / 核糖体：原核生物和细胞器为 70S，真核细胞质为 80S。
- Chloroplast: thylakoids stacked into grana, stroma. / 叶绿体：类囊体堆叠成基粒，基质。
4. Biological Molecules Terminology | 生物分子术语
Biological molecules are grouped into carbohydrates, lipids, proteins and nucleic acids. A monosaccharide such as glucose (C₆H₁₂O₆) is a single sugar unit; two monosaccharides join via a glycosidic bond in a condensation reaction to form a disaccharide like maltose. Polysaccharides are polymers – starch and glycogen are storage molecules, while cellulose provides structural support. Lipids include triglycerides made of one glycerol and three fatty acids joined by ester bonds. Phospholipids have a hydrophilic head and hydrophobic tails, crucial for membrane formation. Proteins are polymers of amino acids linked by peptide bonds. Every word here can be decoded: 'glycosidic' contains 'glyco' (sugar) and relates to the bond; 'triglyceride' has 'tri-' for three fatty acids.
生物分子分为碳水化合物、脂类、蛋白质和核酸。像葡萄糖（C₆H₁₂O₆）这样的单糖是单个糖单元；两个单糖通过缩合反应形成糖苷键连接成二糖，如麦芽糖。多糖是聚合物——淀粉和糖原是储存分子，而纤维素提供结构支撑。脂类包括由一个甘油和三个脂肪酸通过酯键连接而成的甘油三酯。磷脂具有亲水性头部和疏水性尾部，对膜的形成至关重要。蛋白质是由肽键连接的氨基酸聚合物。每一个词都可以拆解：'glycosidic' 含有 'glyco'（糖）并指向该键；'triglyceride' 有 'tri-' 表示三个脂肪酸。
| Monomer | Polymer | Bond Type |
|---|---|---|
| Monosaccharide | Polysaccharide | Glycosidic |
| Amino acid | Protein (polypeptide) | Peptide |
| Nucleotide | DNA / RNA | Phosphodiester |
这张表格总结了单体、聚合物与键型的关系，方便对比记忆。
5. Enzymes Made Easy | 酶相关词汇轻松记
Enzymes are biological catalysts that lower activation energy. and we can think of an enzyme's active site as a lock into which a specific substrate key fits. The induced fit model states that the active site molds around the substrate. When temperature or pH exceed the optimum, bonds break and the enzyme is denatured – its active site loses shape permanently. Competitive inhibitors resemble the substrate and block the active site temporarily, while non-competitive inhibitors bind elsewhere and alter the shape. Use the phrase 'Competitor races to occupy the site' for competitive inhibition. Remember that 'denature' applies to proteins; never say an enzyme is 'killed'.
酶是降低活化能的生物催化剂。我们可以把酶的活性位点想象成一把锁，特定的底物钥匙与之匹配。诱导契合模型指出活性位点会围绕底物改变形状。当温度或 pH 超出最适范围，键断裂，酶就会变性——其活性位点永久失去形状。竞争性抑制剂与底物相似，暂时占据活性位点，而非竞争性抑制剂结合在别处并改变形状。用短语 'Competitor races to occupy the site'（竞争者抢先占据位点）记忆竞争性抑制。记住 'denature' 用于蛋白质；永远不要说酶被 'killed'。
- Active site: region on enzyme where substrate binds. / 活性位点：酶上底物结合的区域。
- Substrate: molecule that an enzyme acts upon. / 底物：酶作用的分子。
- Vmax: maximum rate of reaction when all active sites are saturated. / 最大反应速率：所有活性位点被饱和时的速率。
- Denaturation: permanent loss of 3D structure due to broken bonds. / 变性：因键断裂导致三维结构永久丧失。
6. Cell Membrane and Transport Terms | 细胞膜与运输术语
The fluid mosaic model describes the cell membrane: a phospholipid bilayer with proteins floating in it, like a sea of lipids with protein icebergs. 'Fluid' because phospholipids can move laterally; 'mosaic' because of the scattered proteins. Transport across this membrane includes passive processes like diffusion (net movement of particles down a concentration gradient) and osmosis (diffusion of water from high to low water potential through a partially permeable membrane). Active transport requires ATP to move substances against the gradient. Facilitated diffusion uses channel or carrier proteins but no energy. Endocytosis brings large substances in, while exocytosis exports them out. Visualise 'Endo enters, Exo exits'.
流动镶嵌模型描述细胞膜：磷脂双分子层中漂浮着蛋白质，宛如蛋白质冰山散落在脂质的海洋中。 'Fluid'（流动的）因为磷脂可以横向移动；'mosaic'（镶嵌的）因为蛋白质点缀其中。跨膜运输包括被动过程，如扩散（粒子沿浓度梯度的净移动）和渗透（水通过选择透过性膜从高水势向低水势的扩散）。主动运输需要 ATP 逆浓度梯度运输物质。易化扩散利用通道蛋白或载体蛋白，但不需要能量。胞吞作用将大物质摄入，胞吐作用则将其输出。想象 'Endo enters, Exo exits'。
| Process | Energy Needed? | Direction |
|---|---|---|
| Simple diffusion | No | Down concentration gradient |
| Osmosis | No | Down water potential gradient |
| Active transport | Yes (ATP) | Against concentration gradient |
7. Cell Division and Mitosis | 细胞分裂与有丝分裂
Mitosis produces two genetically identical daughter cells and is essential for growth and repair. The cell cycle includes interphase (G1, S, G2), where DNA replicates and cells grow. However, the division itself consists of prophase, metaphase, anaphase and telophase – often memorised by the acronym PMAT. In prophase chromosomes condense and the nuclear envelope breaks down; in metaphase chromosomes line up at the equator; anaphase sees sister chromatids pulled to opposite poles; telophase forms new nuclei. Cytokinesis then splits the cytoplasm. Remember 'PMAT' and that 'Pro' tells you to Prepare, 'Meta' means Middle, 'Ana' means Apart, and 'Telo' means Two nuclei. Be precise: chromosomes are two sister chromatids joined at a centromere before anaphase.
有丝分裂产生两个遗传上相同的子细胞，对生长和修复至关重要。细胞周期包括间期（G1、S、G2），此时 DNA 复制，细胞生长。然而分裂本身包括前期、中期、后期和末期——常用首字母缩略词 PMAT 记忆。前期染色体凝集，核膜解体；中期染色体排列在赤道板；后期姐妹染色单体被拉向两极；末期形成新核。然后胞质分裂将细胞质分开。记住 'PMAT'：'Pro' 表示准备（Prepare），'Meta' 表示中间（Middle），'Ana' 表示分开（Apart），'Telo' 表示两个核（Two nuclei）。用语要精准：后期之前染色体是由着丝粒连接的两条姐妹染色单体。
- Chromosome: condensed DNA structure visible during division. / 染色体：分裂期间可见的凝集 DNA 结构。
- Chromatid: one half of a duplicated chromosome. / 染色单体：重复染色体的两半之一。
- Centromere: region joining sister chromatids. / 着丝粒：连接姐妹染色单体的区域。
- Spindle fibres: protein structures that pull chromatids apart. / 纺锤丝：拉开染色单体的蛋白质结构。
8. DNA, RNA and Protein Synthesis | DNA、RNA 与蛋白质合成
DNA (deoxyribonucleic acid) stores genetic information as a sequence of nucleotides. Each nucleotide contains a phosphate group, a deoxyribose sugar, and a nitrogenous base – adenine (A), thymine (T), cytosine (C) or guanine (G). Complementary base pairing states A pairs with T and C pairs with G. RNA (ribonucleic acid) uses uracil (U) instead of thymine and is single-stranded. In protein synthesis, transcription copies a gene into mRNA, which then travels to a ribosome. Translation reads the mRNA codons, and tRNA molecules bring the corresponding amino acids. Think 'DNA is the blueprint, mRNA is the copy, tRNA is the courier'.
DNA（脱氧核糖核酸）以核苷酸序列储存遗传信息。每个核苷酸含有一个磷酸基团、一个脱氧核糖和一个含氮碱基——腺嘌呤（A）、胸腺嘧啶（T）、胞嘧啶（C）或鸟嘌呤（G）。互补碱基配对指出 A 与 T 配对，C 与 G 配对。RNA（核糖核酸）用尿嘧啶（U）代替胸腺嘧啶，且为单链。在蛋白质合成中，转录将基因复制为 mRNA，随后 mRNA 移动到核糖体。翻译读取 mRNA 的密码子，tRNA 分子携带来相应的氨基酸。想象 'DNA is the blueprint, mRNA is the copy, tRNA is the courier'（DNA 是蓝图，mRNA 是复印件，tRNA 是快递员）。
A-T, C-G DNA base pairing; A-U, C-G in RNA
DNA 碱基配对 A-T、C-G；RNA 中为 A-U、C-G
9. Genetics and Inheritance | 遗传学与遗传
nism has two identical alleles, it is homozygous; if different, heterozygous. The outward appearance is the phenotype, while the genetic makeup is the genotype. A dominant allele masks the effect of a recessive allele. In a monohybrid cross, use a Punnett square to predict offspring ratios. Codominance occurs when both alleles are expressed equally, e.g., blood group AB. Remember 'homozygous = same alleles, heterozygous = different' by linking 'homo' to homogeneous.
遗传学自带一套精准的词汇。基因是编码多肽链的一段 DNA。等位基因是同一基因的不同形式。如果生物体有两个相同的等位基因，即为纯合子；如果不同则为杂合子。外在表现是表型，遗传组成是基因型。显性等位基因掩盖隐性等位基因的效应。在单基因杂交中，利用庞纳特方格预测子代比例。当两个等位基因均同时表达时即为共显性，例如 AB 血型。通过将 'homo' 联想到同质均匀，记住 'homozygous = 相同等位基因，heterozygous = 不同等位基因'。
- Phenotype: observable characteristics. / 表型：可观察的特征。
- Genotype: genetic constitution of an organism. / 基因型：生物体的遗传组成。
- Monohybrid cross: crossing of one trait. / 单基因杂交：一个性状的杂交。
- Codominance: both alleles contribute to phenotype. / 共显性：两个等位基因都对表型有贡献。
10. Practical and Experimental Terms | 实验与操作术语
Your CCEA paper will evaluate practical skills through terminology. The independent variable is what you change; the dependent variable is what you measure. Controlled variables are kept constant to ensure a fair test. Systematic errors affect accuracy and are linked to equipment or design, while random errors affect precision and can be reduced by repeats. Reliability means the results are repeatable; validity means you measured what you intended to. Use the acronym 'CRORe' (Control variables, Reliability, Once repeated, Results) or simply remember that 'You change the Independent, and the Dependent Depends on it'.
你的 CCEA 试卷会通过术语来评估实验技能。自变量是你改变的变量；因变量是你测量的变量。控制变量保持不变以确保公平测试。系统误差影响准确性，与设备或设计有关，而随机误差影响精确度，可通过重复实验减少。可靠性意味着结果可重复；有效性意味着你测量了你想要测量的内容。使用首字母缩略词 'CRORe' 或记住 '你改变自变量（Independent），因变量（Dependent）取决于它'。
| Term | Definition |
|---|---|
| Independent variable | Factor you deliberately change. / 自变量：你故意改变的因子。 |
| Dependent variable | Factor you measure. / 因变量：你测量的因子。 |
| Control variable | Factor kept constant. / 控制变量：保持不变的因子。 |
| Systematic error | Error causing consistent deviation, affects validity. / 系统误差：导致一致偏差的误差，影响有效性。 |
11. Memory Aids and Acronyms | 记忆技巧与缩略词
Mnemonics are your best friend in a terminology-heavy subject. For the hierarchy of life, 'Dear King Philip Came Over For Good Soup' stands for Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species – although CCEA may require simpler taxon levels, it still helps. For enzyme inhibition, 'Non-competitive = Not at active site'. For the biological molecules, 'Carbohydrates Can Store Energy' e, Apart, Two. Make up your own silly sentences; the sillier they are, the more memorable.
在术语繁重的学科中，助记法是你最好的朋友。对于生命的分类层级，'Dear King Philip Came Over For Good Soup' 代表域、界、门、纲、目、科、属、种——虽然 CCEA 可能要求较简化的分类阶元，但依旧有帮助。对于酶抑制，记住 'Non-competitive = Not at active site'（非竞争性 = 不在活性位点）。对于生物分子，'Carbohydrates Can Store Energy' 提醒你是碳、氢、氧。对于有丝分裂阶段，用 PMAT 配上动作：Prepare, Middle, Apart, Two。自己编一些滑稽的句子，越荒诞越难忘。
- OIL RIG: Oxidation Is Loss, Reduction Is Gain of electrons (useful for respiration). / 氧化是失去电子，还原是得到电子（在呼吸中实用）。
- PMAT: Prophase, Metaphase, Anaphase, Telophase. / 前期, 中期, 后期, 末期。
- DIRT: Dependent, Independent, Random, Table – for checking variables before an experiment. / 实验前检查变量的小口诀。
12. Quick Quiz for Self-Testing | 自测小测验
Test yourself regularly without looking at the definitions. What term describes the net movement of water from a region of high water potential to a region of low water potential through a partially permeable membrane? (Osmosis). Which organelle is responsible for modifying and packaging proteins? (Golgi apparatus). What bond forms between two monosaccharides? (Glycosidic bond). What is the name of the model describing cell membrane structure? (Fluid mosaic model). How do we call the process where both alleles are expressed equally? (Codominance). Repeating these quick recalls builds the automatic retrieval you need during exams.
在没有查看定义的情况下定期自测。哪个术语描述水通过选择透过性膜从高水势区域向低水势区域的净移动？（渗透）。哪个细胞器负责修饰和包装蛋白质？（高尔基体）。两个单糖之间形成什么键？（糖苷键）。描述细胞膜结构的模型叫什么？（流动镶嵌模型）。两个等位基因同等表达的现象称为什么？（共显性）。反复进行这种快速回忆，能建立起考试时所需的自
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