NYGH 2012-S3EOY-Bio P1

Class Register Number Name 南洋女子中学校 NANYANG GIRLS’ HIGH SCHOOL End-of-Year Examination 2012 Secondary Three BIOLOGY 45 minutes Paper 1 Multiple Choice 0800 - 0845 Friday 12 October 2012 Additional materials: Multiple Choice Answer Sheet READ THESE INSTRUCTIONS FIRST Do not open this booklet until you are told to do so. Write in soft pencil. Do not use staples, paper clips, highlighters, glue or correction fluid. Write your name, class and register number on the Multiple Choice Answer Sheet provided. There are thirty questions in this paper. Answer all questions. For each question there are four possible answers, A, B, C and D. Choose the one you consider correct and record your choice in soft pencil on the answer sheet. INFORMATION FOR CANDIDATES Each correct answer will score one mark. A mark will not be deducted for a wrong answer. Any rough working should be done in this booklet. Setter: F-YYM, OC, AM This document consists of 15 printed pages. NANYANG GIRLS’ HIGH SCHOOL [Turn over 2012 End-of-Year Examination Secondary Three 2 Nanyang Girls’ High School Setter: F-YYM, OC, AM Biology / I 1 Which of the following shows the correct sequence of steps involved in the scientific method? A observation, hypothesis, experiment, absolute proof B hypothesis, experiment, observation, conclusion C experiment, observation, hypothesis, conclusion D observation, hypothesis, experiment, conclusion 2 The table below shows the common name and scientific names of four animals found in the state of New York. Based on the information, which two animals are most closely related? Common name Scientific name i. White perch Morone americana ii. Grass pickerel Esox americanus iii. Monkfish Lophius americanus iv. Muskellunge Esox masquinongy A i and ii B ii and iii C ii and iv D i and iv 3 The electron micrograph shows an organelle found in a typical living cell. Which of the following correctly states the function of the organelle? A Releases energy through aerobic respiration B Traps light energy for photosynthesis C Controls the movement of substances D Repackages proteins for secretion

2012 End-of-Year Examination Secondary Three 3 Nanyang Girls’ High School Setter: F-YYM, OC, AM Biology / I [Turn over 4 The figure below shows an animal cell. Which of the following describes the functional relationship of the labeled structures? A 1 is synthesised by 2. B 2 contains substances produced by 3 and 4. C 3 contains substances produced by 6. D 4 controls the contents in 5. 5 The figure below shows some data about cell size. Radius 1.0 3.0 1.0 Surface area (4πr2) 12.6 113.1 339.4 Volume (4/3 πr3) 4.2 113.1 113.1 Which of the following statements can be concluded based on the above data? A Large cells have high surface area to volume ratio. B For the same total volume, cells with smaller radius will have higher surface area to volume ratio. C When cells are enlarged, the increase in volume is equal to the increase in surface area. D Small cells transfer substances faster than big cells. 1 2 3 4 5 6 2012 End-of-Year Examination Secondary Three 4 Nanyang Girls’ High School Setter: F-YYM, OC, AM Biology / I For questions 6 and 7, refer to the experimental set up below. 6 What colours would you expect to observe in the respective solutions after four hours? Beaker X Beaker Y Visking tubing A Brown Brown Blue-black B Blue-black Brown Blue-black C Blue-black Blue-black Brown D Brown Blue-black Brown 7 The experiment was repeated with a fresh batch of solutions, and the solution in beaker Y was changed to pure water. The set up was left to stand for four hours. Which of the following observations is false? A The height of solutions in both beakers will be the same. B The visking tubing becomes larger and firmer. C A negative result is obtained when solution in Beaker X is subjected to the Benedict's Test . D Solution in Beaker Y remains colourless. starch solution starch solution in Visking tubing iodine solution Beaker X Beaker Y

2012 End-of-Year Examination Secondary Three 5 Nanyang Girls’ High School Setter: F-YYM, OC, AM Biology / I [Turn over 8 Substance X is a metabolic waste product produced by rat cells, and is usually transported out of the cells for excretion. Potassium cyanide is a chemical that is known to interfere with the release of energy during respiration. To identify whether the transport of Substance X is by active transport, which of the following experimental set-ups is suitable? A Sample O 2 treatment Temp./ °C Cyanide treatment Rat 1 Present 30 Present Rat 2 Present 30 Present Rat 3 Present 30 Present Rat 4 Absent 30 Absent Rat 5 Absent 30 Absent Rat 6 Absent 30 Absent B Sample O 2 treatment Temp./ °C Cyanide treatment Rat 1 Present 30 Present Rat 2 Present 40 Present Rat 3 Present 50 Present Rat 4 Absent 30 Absent Rat 5 Absent 40 Absent Rat 6 Absent 50 Absent C Sample O 2 treatment Temp./ °C Cyanide treatment Rat 1 Present 30 Present Rat 2 Present 30 Present Rat 3 Present 30 Present Rat 4 Present 30 Absent Rat 5 Present 30 Absent Rat 6 Present 30 Absent D Sample O 2 treatment Temp./ °C Cyanide treatment Rat 1 Present 30 Present Rat 2 Present 30 Present Rat 3 Present 30 Present Rat 4 Present 100 Absent Rat 5 Present 100 Absent Rat 6 Present 100 Absent 2012 End-of-Year Examination Secondary Three 6 Nanyang Girls’ High School Setter: F-YYM, OC, AM Biology / I 9 Which chemical test shows the presence of an enzyme in a biological washing powder? A Benedict’s test B Biuret’s test C Ethanol emulsion test D Iodine solution test 10 The table below shows the chemical formulae and some properties of three food molecules. Food X Y Z Formula C 24H44O6 C 12H22O11 C 20H32O11N10 Solubility in water No Yes Yes Energy value in kJ/g 38 16 17 Identify the classes of food represented by X, Y and Z. X Y Z A Carbohydrates Fats Proteins B Carbohydrates Proteins Fats C Fats Carbohydrates Proteins D Fats Proteins Carbohydrates 11 Three wells were cut in agar jelly which contained starch. A different solution was placed in each well. One day later, the jelly was flooded with iodine solution. The figure below shows the final appearance of the jelly. Which solutions would have given the results indicated? Well 1 Well 2 Well 3 A amylase + weak acid water amylase B water boiled amylase amylase C boiled amylase amylase + weak acid amylase D boiled amylase amylase amylase + weak acid 1 2 Iodine solution remained brown Iodine solution turned blue-black 3

2012 End-of-Year Examination Secondary Three 7 Nanyang Girls’ High School Setter: F-YYM, OC, AM Biology / I [Turn over X 12 Which function of the liver is correctly paired with the chemical involved? Function Chemical A deamination glycogen B detoxification alcohol C emulsification urea D storage amino acids 13 The photomicrograph below shows part of an alimentary canal. Which of the following statement(s) is/are true? i X helps in peristaltic movement in the body. ii X takes part in active transport of nutrients. iii X is found in the colon. iv X has a large surface area to volume ratio. A iii only B i and iii only C ii and iv only D i, ii and iii only 2012 End-of-Year Examination Secondary Three 8 Nanyang Girls’ High School Setter: F-YY