學校考試中學理科
DSE 生物科題庫｜4909題 必修單元·選修課題·實驗數據分析
Pickmyquiz
•0.0(0)
4909 題 SMP/SMA 8/3/2026
題庫簡介
香港中學文憑試（DSE）生物科題庫，4909題涵蓋必修單元及四個選修課題，全部附詳細解析。針對核心概念、實驗設計及數據分析題型編寫，可按課題操練並自動記錄錯題，配合模擬測驗計時練習，熟習卷一甲乙部同卷…
預覽內容
免費體驗 20 題The following specimens represent different animal groups: Specimen P (a sea anemone), Specimen Q (a flatworm), Specimen R (an earthworm), and Specimen S (a grasshopper). 以下標本代表不同的動物類群：標本 P（海葵）、標本 Q（渦蟲）、標本 R（蚯蚓）及標本 S（蚱蜢）。 (a) State the body symmetry of Specimen P and Specimen Q. (2 marks) (a) 寫出標本 P 及標本 Q 的身體對稱性。(2分) (b) Based on the body plan, state ONE structural feature that Specimen R has but Specimen Q lacks. Briefly explain the advantage of this feature for movement. (2 marks) (b) 根據身體結構，寫出一項標本 R 具有但標本 Q 缺乏的結構特徵。簡述該特徵對運動的一項好處。(2分) (c) Specimen S belongs to the Phylum Arthropoda. State TWO external features of Specimen S that are characteristic of this phylum. (3 marks) (c) 標本 S 屬於節肢動物門。寫出標本 S 兩項屬於該門特徵的外部特徵。(3分) (d) Arrange the four specimens in order of increasing complexity of their body plans. Explain why Specimen S is considered the most complex among them. (3 marks) (d) 按身體結構的複雜程度，由低至高排列這四個標本。解釋為何標本 S 被視為當中最複雜的。(3分)
In an experiment investigating the effect of insulin on blood glucose levels, the experimental rats were deprived of food for 12 hours before the injection of the hormone. Explain why this procedure is necessary for the validity of the experiment. 在一項研究胰島素對血糖水平影響的實驗中，實驗大鼠在注射激素前被禁食 12 小時。解釋為什麼這個程序對於實驗的有效性是必要的。 (4 Marks) (4分)
People with lactose intolerance experience digestive discomfort because they cannot produce enough lactase to break down lactose into simpler sugars. During the production of traditional yogurt, specific bacteria are added to the milk. Explain the biochemical change that occurs during this fermentation process and how it allows lactose-intolerant individuals to consume yogurt without significant discomfort. 乳糖不耐症患者會感到腸胃不適，因為他們無法產生足夠的乳糖酶將乳糖分解成較簡單的糖分。在製作傳統乳酪的過程中，牛奶中會加入特定的細菌。試解釋在此發酵過程中發生的生化變化，以及這如何使乳糖不耐症患者在食用乳酪時不會感到明顯不適。 (4 Marks) (4分)
Explain two biological mechanisms through which a high-fiber diet can help individuals prevent obesity. 解釋高纖維飲食如何透過兩種生物學機制幫助個人預防肥胖。 (6 Marks) (6分)
In humans, mechanical digestion of food begins in the mouth, where different types of teeth perform different functions during chewing. Identify TWO types of human teeth and, for each, describe how its structure adapts it to its specific role in the mechanical digestion of food. 在人類中，食物的機械消化由口腔開始，不同類型的牙齒在咀嚼過程中執行不同的功能。辨別兩種人類牙齒，並就每一種，描述其結構如何使它適應於食物機械消化中的特定角色。 (6 Marks) (6分)
(a) (i) Identify the specific mode of nutrition for organisms that ingest organic food, digest it internally, and then absorb the nutrients. (ii) Name the mode of nutrition for organisms that secrete digestive enzymes onto dead organic matter and absorb the products. (iii) State whether organisms in the Kingdom Animalia are autotrophic or heterotrophic. (a) (i) 辨識攝取有機食物、在體內消化並吸收營養的生物之營養方式。(ii) 命名對死亡有機物分泌消化酶並吸收產物的生物之營養方式。(iii) 指出動物界 (Kingdom Animalia) 的生物是自養生物還是異養生物。 (3 Marks) (3分)
Olestra is a synthetic fat substitute used in the food industry. It is a large polyester molecule formed from sucrose and fatty acids. Because of its large size and complex structure, the human digestive system lacks the specific enzymes required to break it down. Propose two biological mechanisms to explain how consuming such a non-digestible substance could lead to a reduction in net energy intake. 奧利斯特拉 (Olestra) 是一種用於食品工業的合成脂肪替代品。它是由蔗糖和脂肪酸組成的巨大聚酯分子。由於其分子體積大且結構複雜，人體消化系統缺乏分解它的特定酶。請提出兩個生物學機制，解釋食用這種不可消化的物質如何導致淨能量攝入減少。 (3 Marks) (3分)
In the industrial production of insulin, recombinant DNA technology is used to transform bacteria into 'biological factories'. (a) Explain why a plasmid is used in the production of recombinant DNA. (2 marks) (b) Describe how the human insulin gene is joined to the plasmid. (2 marks) (c) After obtaining the genetically modified bacteria, they are cultured in a fermenter. Suggest three environmental conditions that should be monitored in the fermenter to ensure maximum insulin yield. (3 marks) (d) Compared to extracting insulin from the pancreas of slaughtered animals, state two advantages of using recombinant DNA technology to produce insulin. (3 marks) 在工業化生產胰島素的過程中，重組 DNA 技術被用於將細菌轉化為「生物工廠」。 (a) 解釋在製作重組 DNA 的過程中，為何要使用質粒。(2分) (b) 描述人類胰島素基因是如何與質粒連接的。(2分) (c) 獲得基因改造細菌後，會將其放入發酵罐中培養。建議三項在發酵罐中必須監測的環境條件，以確保胰島素產量達至最高。(3 marks) (d) 與從屠宰動物的胰臟中提取胰島素相比，指出利用重組 DNA 技術生產胰島素的兩項優點。(3分)
(a) Describe the structural adaptation of the middle piece of a sperm cell in relation to its function. (a) 描述精子中段的結構如何與其功能相適應。 (b) (i) Explain why mitochondrial DNA (mtDNA) is inherited only from the mother. (ii) Suggest one reason why mitochondrial DNA is more useful than nuclear DNA for tracing ancient human migration patterns. (b) (i) 解釋為什麼線粒體 DNA (mtDNA) 只遺傳自母親。 (ii) 建議一個原因，說明為什麼在追溯古代人類遷徙模式時，線粒體 DNA 比核 DNA 更有用。 (6 Marks) (6分)
Figure 1 shows the results of the hormone treatment experiment. Refer to Figure 1 and answer the following questions. 圖 1 顯示激素處理實驗的結果。參考圖 1，回答以下問題。 (a) Based on the data, compare the effect of using Glucagon and Adrenaline together (Group X) with using them individually (Groups B and C). (2 marks) (b) State the organ that secretes glucagon and identify one target organ of glucagon. (2 marks) (c) Describe how glucagon increases blood glucose levels in the target organ identified in (b). (3 marks) (d) Hormone K is often released during long-term stress. Suggest why an increase in blood glucose level, as seen in Group Y, is an advantage to the survival of the rats. (3 marks) (a) 根據數據，比較同時使用胰高血糖素和腎上腺素（X 組）與單獨使用它們（B 組和 C 組）的效果。(2分) (b) 指出分泌胰高血糖素的器官，並辨別胰高血糖素的一個靶器官。(2分) (c) 描述胰高血糖素如何在 (b) 中辨別的靶器官中增加血糖水平。(3分) (d) 激素 K 通常在長期壓力下釋放。試建議為何如 Y 組所示的血糖水平增加對大鼠的生存有利。(3分)
In a conservation study of a wetland area, ecologists evaluate the ecological value of different sites to prioritize protection efforts. (a) Besides the presence of rare species, suggest one criterion for evaluating the conservation value of a site. (2 marks) (b) Explain how the criterion suggested in (a) contributes to the stability of the ecosystem. (2 marks) (c) State two human activities that could lead to the loss of biodiversity in such wetland sites. (3 marks) (d) Describe one active management measure that can be taken to restore a degraded wetland. (3 marks) 在一個濕地保育研究中，生態學家評估不同位點的生態價值，以確定保育工作的優先次序。 (a) 除了稀有物種的存在外，建議一個評估位點保育價值的準則。(2分) (b) 解釋在 (a) 中建議的準則如何有助於生態系統的穩定性。(2分) (c) 列出兩項可能導致此類濕地位點生物多樣性流失的人類活動。(3分) (d) 描述一項可用於修復受損濕地的積極管理措施。(3分)
In abandoned agricultural fields where the soil is nutrient-poor, particularly lacking in nitrogen compounds, farmers often plant clover (a type of legume) to restore soil fertility. Explain why clover can grow successfully in such nitrogen-deficient soil and how it contributes to the ecosystem's recovery. 在養分貧瘠（特別是缺乏氮化合物）的廢棄農田中，農民經常種植三葉草（一種豆科植物）來恢復土地肥力。解釋為何三葉草能在這種缺氮的土壤中成功生長，以及它如何有助於生態系統的恢復。 (4 Marks) (4分)
The diagram shows the results of gel electrophoresis after treating linear viral DNA and circular plasmid DNA with the same restriction enzyme. Lane 1 is the DNA ladder, Lane 2 is the digested viral DNA, and Lane 3 is the digested plasmid DNA. (a) Based on the results in Lane 2, determine the number of recognition sites for this restriction enzyme on the linear viral DNA. Explain your answer. (2 marks) (b) Based on the results in Lane 3, determine the number of recognition sites for this restriction enzyme on the circular plasmid DNA. Explain your answer. (2 marks) (c) State two properties of DNA molecules that allow them to be separated by gel electrophoresis. (3 marks) (d) In a recombinant DNA experiment, the same restriction enzyme is used to cut both the target gene and the plasmid vector. Explain the importance of using the same enzyme. (3 marks) 下圖顯示了使用相同的限制酶處理線性病毒 DNA 和環狀質粒 DNA 後的凝膠電泳結果。泳道 1 是 DNA 分子量標準，泳道 2 是經消化後的病毒 DNA，泳道 3 是經消化後的質粒 DNA。 (a) 根據泳道 2 的結果，確定該限制酶在線性病毒 DNA 上的識別位點數量。解釋你的答案。(2 分) (b) 根據泳道 3 的結果，確定該限制酶在環狀質粒 DNA 上的識別位點數量。解釋你的答案。(2 分) (c) 列出 DNA 分子的兩項特性，使其能透過凝膠電泳進行分離。(3 分) (d) 在重組 DNA 實驗中，會使用相同的限制酶切割目標基因和質粒載體。解釋使用相同限制酶的重要性。(3 分)
Explain the role of the father's gametes in determining the sex of a human baby. 解釋父親的配子在決定人類嬰兒性別中所扮演的角色。 (5 Marks) (5分)
A student conducted a field study on a rocky shore. He observed that certain species of brown algae are abundant in the low-tide zone (Site X) and mid-tide zone (Site Y), but are completely absent from the high-tide zone (Site Z). With reference to abiotic factors, suggest two reasons why these brown algae cannot survive at Site Z. 一名學生在岩岸進行野外考察。他觀察到某些褐藻物種在低潮帶（位點 X）和中潮帶（位點 Y）生長茂盛，但在高潮帶（位點 Z）則完全消失。 試參考非生物因素，建議兩個原因解釋為何這些褐藻不能在位點 Z 生存。 (3 Marks) (3分)
A conservation group is evaluating three different habitats (Site X, Site Y, and Site Z) based on their ecological value and restoration potential. Refer to the provided scoring table: (a) Identify the site that is considered the most natural. Justify your answer using the data provided. (2 marks) (b) Identify the site that would be the most difficult to recover if destroyed. Explain why such sites usually have higher conservation value. (2 marks) (c) Besides naturalness and difficulty of recovery, suggest THREE other criteria used in ecological evaluation for conservation in Hong Kong. (3 marks) (d) Explain why protecting a 'natural' habitat (like Site Z) is more effective for biodiversity conservation than creating a 'man-made' habitat (like Site X). (3 marks) 一個保育團體正根據生態價值和修復潛力評估三個不同的棲息地（地點 X、地點 Y 和地點 Z）。參考提供的評分表： (a) 辨識出被認為最自然的地點。利用提供的數據解釋你的答案。(2分) (b) 辨識出若遭受破壞後最難修復的地點。解釋為何這類地點通常具有較高的保育價值。(2分) (c) 除了自然程度和修復難度外，建議三個在香港用於保育生態評估的其他準則。(3分) (d) 解釋為何保護一個「自然」棲息地（如地點 Z）比建立一個「人造」棲息地（如地點 X）對生物多樣性保育更有效。(3分)
Suppose site X is currently a climax community (forest) and site Y is a grassland. Describe one human activity that would cause the plant community at site X to eventually resemble the plant community at site Y. Explain how such activity leads to this change in the plant community. 假設地點 X 目前是一個演替頂峰群落（森林），而地點 Y 是一片草地。描述一種會導致地點 X 的植物群落最終變得與地點 Y 的植物群落相似的人類活動。解釋該活動如何導致植物群落的這種變化。 (4 Marks) (4分)
A study was conducted to investigate the body temperature regulation of athletes during a marathon. Before the race, all participants stayed in a room at 25°C for 30 minutes. During the race, their body temperatures increased significantly. (a) Suggest why the participants had to stay in the temperature-controlled room for 30 minutes before the trial. (2 marks) (b) Describe how the skeletal muscles and the breathing rate change during the race to support the physical activity. (2 marks) (c) Explain why the body temperature of the athletes increases during the marathon. (3 marks) (d) Describe one cooling mechanism involving the skin and explain how it helps the athletes dissipate excess heat. (3 marks) 一項研究調查了馬拉松運動員在比賽期間的體溫調節。賽前，所有參與者在 25°C 的房間內停留了 30 分鐘。比賽期間，他們的體溫顯著上升。 (a) 試建議為何參與者在實驗前需在恆溫室內停留 30 分鐘。(2分) (b) 描述在比賽期間骨骼肌和呼吸速率如何變化以支持體力活動。(2分) (c) 解釋為何運動員的體溫在馬拉松期間會上升。(3 marks) (3分) (d) 描述一種涉及皮膚的散熱機制，並解釋它如何幫助運動員散發多餘的熱量。(3分)
Compare the effects of insulin and glucagon on blood glucose regulation. State one similarity and two differences in their mechanisms of action. 比較胰島素和胰高血糖素對血糖調節的影響。指出兩者在作用機制上的一項相同之處及兩項不同之處。 (4 Marks) (4分)
Figure 12 shows the effects of Hormone X and Hormone Y on blood glucose level. Refer to Figure 12 and answer the following questions. 圖 12 顯示激素 X 和激素 Y 對血糖水平的影響。參考圖 12，回答以下問題。 (a) Describe the individual effects of Hormone X and Hormone Y on blood glucose levels. (2 marks) 描述激素 X 與激素 Y 分別對血糖水平的影響。（2分） (b) Compare the combined effect of Hormone X and Hormone Y with the sum of their individual effects. What does this suggest about their interaction? (2 marks) 比較激素 X 與激素 Y 的共同作用與兩者單獨作用之和。這顯示它們的相互作用是怎樣的？（2分） (c) If Hormone X is glucagon, explain how it increases blood glucose levels by acting on the liver. (3 marks) 若激素 X 是胰高血糖素，解釋它如何作用於肝臟以增加血糖水平。（3分） (d) Describe how the body restores blood glucose to a normal level when it becomes too high after a meal. (3 marks) 描述進食後血糖水平過高時，身體如何將其恢復至正常水平。（3分）
考生最常中伏嘅題目
根據本題庫 1309 題、累計 44,288 次真實作答統計，以下選項最多考生揀錯——溫習時特別留神。
1
Which of the following are advantages of monoculture compared to crop rotation? I It faci…
最多人誤揀：II and III only 只有 II 及 III
38% 作答者揀咗呢個錯誤選項 · 此題累計 40 次作答
2
A student conducted an experiment to investigate the effect of different conditions on the…
最多人誤揀：R only 只有 R
37% 作答者揀咗呢個錯誤選項 · 此題累計 41 次作答
3
Three identical young seedlings are placed under different conditions for ten days. Seedli…
最多人誤揀：All seedlings will have the same length 所有幼苗的長度將會相同
30% 作答者揀咗呢個錯誤選項 · 此題累計 47 次作答
4
Based on the provided distribution of seed mass in a plant population, which of the follow…
最多人誤揀：(2) and (3) only 只有 (2) 和 (3)
39% 作答者揀咗呢個錯誤選項 · 此題累計 33 次作答
5
In an experiment to measure the rate of respiration in germinating seeds using a respirome…
最多人誤揀：The liquid indicator moves away from the seeds. 液體指示劑向遠離種子的方…
27% 作答者揀咗呢個錯誤選項 · 此題累計 48 次作答
想知每題正確答案同詳細解析？下載 App 免費試用，答錯嘅題目會自動收集等你重溫。
使用者評價
0.0•0 則評價
尚無評價
成為第一個評價這個題庫的使用者
