📚 Year 10 WJEC Biology: Common Misconceptions and How to Correct Them | Year 10 WJEC 生物：常见误区与纠正方法
Understanding biology at Year 10 level involves mastering key concepts about living organisms and life processes. However, many students develop persistent misconceptions that can hinder their progress in the WJEC GCSE Biology course. This article identifies ten of the most common misunderstandings and provides clear, exam-focused corrections to help you build a solid foundation.
掌握十年级水平的生物学需要理解关于生物体和生命过程的关键概念。然而，许多学生会产生难以纠正的误解，这可能会阻碍他们在 WJEC GCSE 生物课程中的进步。本文找出十个最常见的误区，并提供清晰、针对考试的纠正方法，帮助你建立扎实的基础。
1. Respiration vs. Breathing | 呼吸作用与呼吸的区别
A frequent misconception is that respiration means the same as breathing – the physical movement of air into and out of the lungs.
一个常见的误区是认为呼吸作用与呼吸（空气进出肺部的身体活动）是同一回事。
In biology, respiration is a chemical process that takes place in every living cell, breaking down glucose to release energy. Breathing, or ventilation, is simply the muscular process that moves air in and out of the body to supply oxygen and remove carbon dioxide.
在生物学中，呼吸作用是一种发生在每个活细胞中的化学过程，分解葡萄糖以释放能量。而呼吸（或通風）只是使空气进出身体的肌肉活动，用以供应氧气并排出二氧化碳。
The overall reaction for aerobic respiration is:
有氧呼吸的总反应式为：
C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂O (+ energy transferred)
2. Plants: Daytime Photosynthesis and Nighttime Respiration | 植物：白天的光合作用与夜晚的呼吸作用
Many learners think plants photosynthesise during the day and only respire at night when it is dark.
许多学生认为植物在白天进行光合作用，只在夜间黑暗时进行呼吸作用。
In reality, plants respire continuously, twenty-four hours a day, to provide energy for cellular activities. Photosynthesis, which produces glucose and oxygen, occurs only in the presence of light. During the night, when photosynthesis stops, net gas exchange shifts to oxygen uptake and carbon dioxide release.
事实上，植物全天二十四小时不间断地进行呼吸作用，为细胞活动提供能量。光合作用（产生葡萄糖和氧气）只在有光时进行。夜晚光合作用停止，净气体交换转为吸收氧气并释放二氧化碳。
3. Osmosis and Diffusion Confusion | 渗透与扩散的混淆
Students often use the terms osmosis and diffusion interchangeably, believing they describe the same process.
学生经常交替使用渗透和扩散这两个术语，认为它们描述的是同一过程。
Diffusion is the net movement of particles from an area of high concentration to an area of low concentration. Osmosis is a special type of diffusion that refers specifically to the movement of water molecules across a partially permeable membrane from a region of higher water potential to a region of lower water potential.
扩散是粒子从高浓度区域向低浓度区域的净移动。渗透是扩散的一种特殊形式，特指水分子通过部分透性膜从水势较高的区域向水势较低的区域移动。
4. Enzymes and High Temperatures: Killed or Denatured? | 酶与高温：杀死还是变性？
It is common to hear pupils say that enzymes are 'killed' when the temperature gets too high.
学生常说当温度过高时酶会被“杀死”。
Enzymes are proteins, not living organisms, so they cannot be killed. Instead, excessive heat breaks the weak bonds holding the enzyme's active site shape, causing it to denature. Once denatured, the substrate can no longer fit, and the enzyme cannot catalyse the reaction.
酶是蛋白质，不是活的生物体，因此不能被杀死。实际上，过热会破坏维持酶活性位点形状的弱键，使其变性。一旦变性，底物就无法再结合，酶便无法催化反应。
5. Cell Wall and Cell Membrane Functions | 细胞壁与细胞膜的功能
Some students assign the role of controlling what enters and leaves the cell to the cell wall, especially in plant diagrams.
一些学生把控制物质进出细胞的作用归给了细胞壁，尤其在植物细胞图中常见此误区。
The cell membrane, present in all cells, is selectively permeable and regulates the movement of substances. The cell wall, found in plants, fungi and bacteria, is a rigid layer outside the membrane that provides structural support and prevents bursting, but it is fully permeable and does not control transport.
所有细胞都有的细胞膜是选择透过性的，能调控物质的移动。而在植物、真菌和细菌中存在的细胞壁，是细胞膜外的刚性层，提供结构支撑并防止细胞破裂，但它是全透性的，不控制物质的运输。
6. Arteries Always Carry Oxygenated Blood | 动脉总是输送含氧血
A persistent myth is that all arteries transport oxygenated blood and all veins carry deoxygenated blood.
一个顽固的错误观念是所有动脉都输送含氧血，所有静脉都输送缺氧血。
The correct rule is that arteries carry blood away from the heart, and veins return blood to the heart. The pulmonary artery carries deoxygenated blood from the heart to the lungs, and the pulmonary vein carries oxygenated blood back to the heart. It is the direction of flow, not oxygen content, that defines the vessel type.
正确的规则是动脉将血液带离心脏，静脉将血液带回心脏。肺动脉将缺氧血从心脏输送到肺部，而肺静脉将含氧血带回心脏。定义血管类型的是血流方向，而不是含氧量。
7. Energy is 'Created' in Respiration | 能量在呼吸作用中被“创造”
When learning about respiration, students frequently write that energy is 'made' or 'created' by the cell.
在学习呼吸作用时，学生经常写道能量是由细胞“制造”或“创造”出来的。
Energy cannot be created or destroyed – it can only be transferred. Respiration transfers energy from the chemical bonds in glucose to a usable form (ATP) that powers cellular processes. The word 'produced' is acceptable in exams only if used to mean 'transferred', but 'created' is incorrect.
能量不能被创造或消灭——只能被转移。呼吸作用将葡萄糖化学键中的能量转移成可用的形式（ATP），为细胞过程提供动力。考试中用“产生”一词如果能表示“转移”是可以接受的，但“创造”是错误的。
8. Plants Absorb Food from the Soil | 植物从土壤中吸收食物
Many Year 10 students think plants take in ready-made food through their roots, much like animals eat.
许多十年级学生认为植物通过根系吸收现成的食物，就像动物吃东西一样。
Plants are autotrophs – they make their own food (glucose) by photosynthesis using sunlight, carbon dioxide and water. Roots absorb water and dissolved mineral ions from the soil, not glucose. These minerals are used to construct other molecules, but the plant's carbon-based food comes from photosynthesis.
植物是自养生物——它们利用阳光、二氧化碳和水，通过光合作用制造自己的食物（葡萄糖）。根系从土壤中吸收水分和溶解的矿物质离子，而不是葡萄糖。这些矿物质用于构建其他分子，但植物基于碳的食物来自光合作用。
9. Food Chain Arrows Point the Wrong Way | 食物链箭头指向错误
When drawing food chains, a common mistake is to draw arrows from the predator to the prey or to think they show what eats what.
绘制食物链时，常见错误是把箭头从捕食者指向猎物，或以为箭头表示谁吃谁。
In a food chain, arrows represent the direction of energy transfer from one organism to the next. The arrow goes from the organism being eaten to the organism that eats it, showing the flow of energy and biomass. Always place the arrow pointing towards the consumer.
在食物链中，箭头代表能量从一个生物体转移到下一个生物体的方向。箭头从被吃的生物体指向吃它的生物体，表示能量和生物量的流动。箭头应始终指向消费者。
10. Transpiration is Only a Waste Process | 蒸腾作用只是一个废物处理过程
Students often describe transpiration merely as water loss from leaves, seeing it as a wasteful side effect of photosynthesis.
学生常常将蒸腾作用仅仅描述为叶片的水分散失，将其视为光合作用的一个浪费性副作用。
While transpiration does result in water vapour loss through stomata, it is essential for the transport of mineral ions up the xylem and for cooling the plant through evaporative cooling. The transpiration stream also maintains cell turgidity, which supports the plant structure.
虽然蒸腾作用确实导致水蒸气通过气孔散失，但它对于矿物质离子通过木质部向上运输以及通过蒸发冷却为植物降温至关重要。蒸腾流还维持了细胞膨压，支撑植物结构。
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