NYGH 2015-S3EOY-Bio P1

Class Register Number Name 南洋女子中学校 NANYANG GIRLS’ HIGH SCHOOL End-of-Year Examination 2015 Secondary Three BIOLOGY Paper 1 Multiple Choice 45 minutes Tuesday 6 October 2015 0800 - 0845 Additional materials: Multiple Choice Answer Sheet READ THESE INSTRUCTIONS FIRST Do not open this booklet until you are told to do so. Write your name, register number and class in the spaces at the top of this page. 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 shade your choice in pencil on the separate Answer Sheet. 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. The use of an approved scientific calculator is expected, where appropriate. Setter: BKoh This document consists of 18 printed pages. NANYANG GIRLS’ HIGH SCHOOL [Turn over

2015 End-of-Year Examination Secondary Three 2 Nanyang Girls’ High School Biology / I 1 Which row correctly identifies the functions of the organelles listed? mitochondrion ribosome vacuole rough endoplasmic reticulum A releases energy modifies protein sorts substances makes proteins B releases energy synthesises protein stores substances transports proteins C transports protein modifies protein stores substances makes proteins D transports protein synthesises protein sorts substances transports proteins 2 The diagram shows a plant cell. Which features are also found in an animal cell? A P and R B Q and R C R and S D S and T T S P Q R plasma membrane Golgi apparatus

2015 End-of-Year Examination Secondary Three 3 Nanyang Girls’ High School Biology / I [Turn over 3 An experiment was set up as shown. After an hour, the liquid level in the thistle funnel increased. Which row shows the possible solutions in the beaker and in the thistle funnel at the start of the experiment? beaker thistle funnel A 5% sucrose distilled water B 10% sucrose 5% sucrose C 5% sucrose 10% sucrose D distilled water distilled water 4 The diagram shows a red blood cell and the concentrations of different ions, in mol dm-3, in the plasma and in the cell. Which ions are actively transported into and out of the red blood cell? into red blood cell out of red blood cell A Cl - Na + B K + Cl - C Na + K + D K+ Na+

2015 End-of-Year Examination Secondary Three 4 Nanyang Girls’ High School Biology / I 5 Which of the following diagrams represents a molecule of simple lipid? A C B D 6 The diagram shows an experiment to investigate the action of amylase on a 1.0 0 g cube of unripe banana. Unripe banana contains high starch content. After 15 minutes at 20 °C, 0.25 g of starch has been converted to sugar. The experiment is repeated at 30 °C, how much starch is converted to sugar? A 0.15 g B 0.25 g C 0.45 g D 1.00 g fatty acid glycerol glycerol fatty acid glycerol phosphate phosphate fatty acid amylase solution 1.00 g cube of unripe banana

2015 End-of-Year Examination Secondary Three 5 Nanyang Girls’ High School Biology / I [Turn over 7 Four different foods were tested. Which results contained both protein and starch? food Benedict’s test biuret test ethanol emulsion test iodine test A + + - - B + - + - C - + - + D - - + + Key + = positive result - = negative result 8 Which graph shows the effect of temperature on the rate of an enzyme-catalysed reaction? A C B D rate of reaction rate of reaction rate of reaction rate of reaction temperature / ° C temperature / ° C temperature / ° C temperature / ° C

2015 End-of-Year Examination Secondary Three 6 Nanyang Girls’ High School Biology / I 9 Four wells were created in an agar plate infused with starch. The wells were filled with four different solutions - I, II, III, and IV. solution condition I salivary amylase + pH 5.0 II salivary amylase + pH 2.0 III salivary amylase + pH 7.5 IV salivary amylase + pH 6.5 After three hours, the agar plate was bathed in iodine solution. The result is shown. Which row shows the correct matching of the solutions to the wells? W X Y Z A I II III IV B IV I II III C III IV I II D II III IV I stained blue-black well stained brown Y X W Z

2015 End-of-Year Examination Secondary Three 7 Nanyang Girls’ High School Biology / I [Turn over 10 The diagram shows how one molecule of glucose is formed during photosynthesis. Which of the following represents P, Q, R and S? P Q R S A oxygen hydrogen ions carbon dioxide water B water oxygen hydrogen ions carbon dioxide C carbon dioxide water oxygen hydrogen ions D hydrogen ions carbon dioxide water glucose

2015 End-of-Year Examination Secondary Three 8 Nanyang Girls’ High School Biology / I Questions 11 and 12 refer to the graph below. Pigment X is a photosynthetic pigment. The graph shows the wavelength of light used by pigment X during photosynthesis. 11 Which two regions of the spectrum are most absorbed by pigment X? A blue and red B orange and red C blue-green and orange D blue-green and violet 12 Which region is almost never absorbed? A blue B green C yellow D violet

2015 End-of-Year Examination Secondary Three 9 Nanyang Girls’ High School Biology / I [Turn over 13 The diagram shows an investigation on the effect of different light intensities on the rate of photosynthesis. Which graph shows how the rate of photosynthesis varies with the distance between the water plant and the lamp? A C B D distance distance distance distance 0 0 0 0 rate of photosynthesis rate of photosynthesis rate of photosynthesis rate of photosynthesis dilute sodium hydrogencarbonate solution thermometer beaker lamp water bath water plant cut end of plant facing upwards

2015 End-of-Year Examination Secondary Three 10 Nanyang Girls’ High School Biology / I 14 A plant with variegated leaves is destarched with its leaves partially covered with black paper. Variegated leaves are leaves that have both dark and light green regions. After a day, the leaves are tested for starch. The result is shown below. Which of the following shows the most likely position and shape of the black paper? A C B D brown brown blue - black blue - black