1 霹雳怡保培南独立中学 SM POI LAM (SUWA) IPOH FINAL EXAMINATION 2023 NAME：_______________________ REG NO: ______________ CLASS: J3 YI / HE / XIN READ THESE INSTRUCTION FIRST 1. This paper consists of 3 sections. 2. Section A consists of 30 multiple choice questions (30m). Answer all questions in the O sheet provided. You are required to shade the answers using PENCIL only. 3. Section B consists of 6 structured questions (60m). Answer all questions. 4. Section C consists of 1 alternative to practical questions (10m). Answer all questions. 5. Answer all questions in the question paper. Total marks: 100% This paper consists of 18 printed pages. Prepared by： ……………… (LAM HEW TONG) Checked by： ……………… (LOKE WAI CHUAN) BIOLOGY DATE: 18th October 2023 TIME: 1335 – 1535 ( 2 hours ) Do Not Turn This Page Until You Are Told To Do So
2 Section A: Multiple Choice Questions (30m) Answer all questions in the O sheet provided. 1. The diagram above shows a mouse running away from the cat. Which characteristics of living organism is shown? A. Reproduction and excretion B. Movement and nutrition C. Sensitivity and movement D. Respiration and growth 2. An organism has dry scales covering its body. To which vertebrate group does it belong? A. amphibian B. reptile C. fish D. mammal 3. According to the binomial system, how should a human be named? A. Homo sapiens B. Homo Sapiens C. homo sapiens D. homo Sapiens 4. Which of the followings is not the characteristics of all living organisms? A. excretion B. photosynthesis C. reproduction D. respiration
3 5. The diagram shows an animal. Use the key to identify the animal 1 Has two wings…………………………………………... go to 2 Has four wings…………………………………………... go to 3 2 Has antennae much shorter than legs……………………. A Has antennae about the same length as legs…………….. B 3 Has feathery antennae…………………………………... C Has smooth antennae……………………………………. D 6. A palisade cell and a nerve cell are observed under a light microscope, only the palisade cell has a A. cell membrane B. cytoplasm C. vacuole D. nucleus 7. The diagram shows a specialised cell cut in half. What does this diagram indicate about the structure of this cell? A. The cell has a cell wall B. The cell is concave on each side C. The cell is long and thin D. The cell is red and carries oxygen
4 8. The cell shown in the diagram has been magnified 3000 times. The diagram is 21mm wide. What is the actual diameter of the cell? A. 21mm B. 21/3000 mm C. 21 x 3000 mm D. 3000/21 mm 9. The diagram shows an amoeba, a single-celled living organism. The movement of gases at X indicates the occurrence of which process or processes in the cell? A. Excretion and nutrition B. Nutrition and respiration C. Excretion and respiration D. Respiration only 10. Why is the epidermis of a leaf an example of a tissue? A. The cells all have a similar structure and function. B. The cells allow light to pass through. C. The cells allow water to enter them by osmosis. D. The cells are covered by a waxy cuticle. 11. Which process in humans does not use energy released from respiration? A. Cell division B. Diffusion of oxygen C. Muscle contraction D. Protein synthesis
5 12. The diagram shows water and sugar molecules on either side of a partially permeable membrane. cells. What happens during osmosis? A. More sugar molecules pass through the membrane from X to Y than from Y to X B. More sugar molecules pass through the membrane from Y to X than from X to Y C. More water molecules pass through the membrane from X to Y than from Y to X D. More water molecules pass through the membrane from Y to X than from X to Y 13. The diagram represents a protein molecule. What do the small circles represent? A. Amino acids B. Fatty acids C. Glycerol D. Simple sugars 14. Four different foods were tested for their composition. The results are shown in the table. Which food contains protein but not reducing sugar or starch? Benedict’s test Iodine test Biuret test A. blue black purple B. blue brown purple C. brick red black blue D. brick red brown blue
6 15. Four test tubes were set up as shown in the diagram. In which test tube is the starch digested most quickly? 16. The diagram shows the action of amylase. What is the function of the enzyme amylase? A. Breaks down the substrate into amino acids B. Changes the product into the substrate C. Increases the rate of starch breaking down into glucose D. Increases the rate of starch breaking down into maltose 17. Which are characteristics of enzymes? A. They are carbohydrates and biological catalysts B. They are carbohydrates and chemical messengers C. They are proteins and biological catalysts D. They are proteins and chemical messengers 18. What is formed first in a leaf as a result of photosynthesis? A. glucose B. sucrose C. starch D. water A. B. C. D.
7 19. Which product of photosynthesis moves out of a green leaf through the stomata? A. Carbon dioxide B. Glucose C. Oxygen D. Water 20. Which form of energy is stored within glucose molecules made during photosynthesis? A. Chemical B. Heat C. Light D. Mechanical 21. Which cell type contains the most chloroplasts? A. Epidermal cell B. Palisade mesophyll C. Guard cell D. Spongy mesophyll 22. Which type of food molecule is not digested before being absorbed by the body? A. Carbohydrate B. Fat C. Protein D. Water 23. Which organ produces amylase? A. Gall bladder B. Liver C. Oesophagus D. Pancreas
8 24. The diagram shows some of the organs of the human body. In which organs does the digestion of proteins take place? A. P and Q B. P and R C. Q and R D. Q and S 25. Why does chewing food speed up digestion? A. Bacteria in the food are killed B. Food is mixed with protease C. The surface area of the food is increased D. The taste of food in improved 26. A person ate food X. Food X was not affected by enzymes until it reached the duodenum. What was in food X? A. Fat B. Mineral ion C. Protein D. Starch 27. What is the function of the anus? A. Ingestion B. Absorption C. Assimilation D. Egestion
9 28. The diagram shows the teeth of the lower jaw of a human Which tooth is an incisor? 29. The table shows nutrients found in a biscuit. Which nutrient needs no digestion? A. fat 3.0g B. glucose 2.8g C. protein 3.5g D. starch 5.5g 30. By which process is food moved through the alimentary canal? A. phagocytosis B. assimilation C. peristalsis D. ingestion A. B. C. D.
10 Section B: Structured Questions (60m) Answer all the questions in the space provided on the Question Paper. 1. Toads are amphibians. Only two species are native to Britain, the Common toad (Bufo bufo) and the Natterjack toad (Bufo calamita). Natterjack toads like warm sandy soil in open and sunny habitats, which shallow pools for breeding. Examples of these habitats are heathland and sane dunes. Common toads like cooler, more shady habitats, such as woodland. Many areas of sand dunes are being developed for camp sites. Heathland can easily change to woodland as tree grow on it. In the summer, woodland is cooler that heathland due to the shade the trees create. These conditions suit the Common toad, but not the Natterjack. As a result of the changing habitats the Natterjack toad is becoming an endangered species. (a) (i) Name one external feature that identifies an animal as an amphibian. {1m} _______________________________________________________________________________ (ii) Amphibians are a class of vertebrate. Name two other vertebrate classes. {2m} 1._________________________________________________________________________ 2._________________________________________________________________________ (b) State one piece of information from the passage to show that the Common toad and Natterjack toad are closely related species. {1m} _______________________________________________________________________________ _______________________________________________________________________________ (c) From the information provided, state two reasons why Natterjack toads are becoming endangered. {2m} 1 _________________________________________________________________________ _______________________________________________________________________________ 2 _________________________________________________________________________ _______________________________________________________________________________
11 2. (a) Name two structures, visible with a light microscope, which distinguish plant cells from animal cells. {2m} 1 _________________________________________________________________________ 2 _________________________________________________________________________ Figure 1.1 shows a plant cell. (b) Complete the table by matching each of the described functions to one of the cell parts, A – F. {5m} Description of function Cell part Controls the passage of nutrients into the cell. Increases in volume when the cell is placed in water. Contains genetic material. Prevents the cell bursting. Produces glucose during photosynthesis. (c) The actual size of the cell from X to Y is 0.1mm. Calculate the magnification of Figure 1.1. Show your working. {2m} magnification = ______________ Figure 1.1
12 (d) The cell is immersed in distilled water. State and explain what will happen to the cell after 10 minutes in distilled water. {3m} _______________________________________________________________________________ _______________________________________________________________________________ _______________________________________________________________________________ _______________________________________________________________________________ (e) Name one animal cell that has no nucleus when fully developed, state the function of the cell. {2m} Animal cell ___________________________ Function __________________________________________________________________ 3. Figure 2.1 shows a villus from the small intestines of a mammal and an enlarged view of a cell from region A. (a) Name region A, B and C. {3m} A __________________________________________________________________________ B __________________________________________________________________________ C __________________________________________________________________________ Figure 2.1
13 (b) Explain why the cells from region A have many microvilli and mitochondria. {4m} many microvilli _______________________________________________________________ ________________________________________________________________________________ many mitochondria _____________________________________________________________ _________________________________________________________________________________ (c) Name the digested molecules that are being absorbed into {4m} region B _____________________________________________________________________ region C _____________________________________________________________________ 4. (a) Explain the term balanced diet. {3m} _______________________________________________________________________________ _______________________________________________________________________________ _______________________________________________________________________________ (b) (i) Mineral ions are required in the human diet in small quantities. State the mineral ion required for each process: {2m} making bone _________________________________________________________________ making haemoglobin___________________________________________________________ (ii) State another type of nutrient required in the human diet in small quantities. {1m} ________________________________________________________________________________________________ (c) State three factors that influence a person’s nutritional needs. {3m} 1 __________________________________________________________________________ 2 __________________________________________________________________________ 3 __________________________________________________________________________
14 5. Figure 3.1 shows a leaf and a flower Helleborus orientalis. (a) H.orientalis is a dicotyledonous plant. State three features visible in figure 3.1 that show it is a dicotyledonous plant. {3m} 1 __________________________________________________________________________ 2 __________________________________________________________________________ 3 __________________________________________________________________________ (b) Figure 3.2 shows the vascular bundle of a plant. (i) State structure X and Y. {2m} X: ___________________________ Y: ___________________________ Figure 3.1 Figure 3.2 X Y
15 (ii) State the function of structure X. {1m} ________________________________________________________________________________________________ (iii) Identify the part of the plant where the structure of this vascular bundle can be found. {1m} ________________________________________________________________________________ 6. The alimentary canal is adapted for chemical and mechanical digestion. (a) Explain how chemical digestion differs from mechanical digestion. {2m} _______________________________________________________________________________ _______________________________________________________________________________ _______________________________________________________________________________ Figure 4.1 is a diagram of the human alimentary canal. Figure 4.1
16 (b) Table 4.1 shows four functions of the alimentary canal. Complete the table by {6m} • naming the part of the system that carries out each of the functions; • using the letters from figure 4.1 to identify the part of the system named. Function Name of part Letter from Figure 4.1 Produces bile Indigestible food is egested Most soluble food is absorbed into the blood Protease, lipase and amylase are produced Emulsification of large fat globules happens here Water is absorbed and produces faeces (c) Fat is difficult to digest as it is not water soluble. Therefore, it has to be mixed with a type of liquid to ease its digestion, a process known as emulsification. (i) Name the liquid that fat globules are mixed with. {1m} _______________________________________________________________________________ (ii) Explain the advantage of the emulsification of fat globules. {2m} _______________________________________________________________________________ _______________________________________________________________________________ (iii) The emulsification of fat globules is a form of mechanical digestion. Explain why the process is a mechanical digestion but not a chemical digestion. {2m} _______________________________________________________________________________ _______________________________________________________________________________ Table 4.1
17 Section C: Alternative to Practical Questions (10m) Answer all the questions in the space provided on the Question Paper. 1. A student investigated the effect of light intensity on the rate of photosynthesis of algae. Figure 5.1 shows the apparatus set up for the investigation. (a) Suggest why a glass tank with water was placed between the lamp and the bottle in the investigation. {1m} _______________________________________________________________________________ _______________________________________________________________________________ (b) The hydrogencarbonate indicator solution changes colour when the pH changes. At pH 8.4 it is red, at pH 7.6 it is yellow and at pH 9 it is purple. Predict the colour of the hydrogencarbonate indicator solution in the bottle nearest to the lamp at the end of the investigation. Explain your answer. {3m} Colour prediction _________________________________________________________________ Explanation _____________________________________________________________________ _______________________________________________________________________________ _______________________________________________________________________________ Figure 5.1
18 (c) The student’s results are shown in figure 5.2. Describe and explain how the rate of photosynthesis is affected by light intensity. {5m} _______________________________________________________________________________ _______________________________________________________________________________ _______________________________________________________________________________ _______________________________________________________________________________ _______________________________________________________________________________ (d) State one other factor that could also affect the rate of photosynthesis. {1m} _______________________________________________________________________________ Figure 5.2