NYGH 2019-S3EOY-IP Bio P1

Class Register Number Name 南洋女子中学校 NANYANG GIRLS’ HIGH SCHOOL End-of-Year Examination 2019 Secondary Three IP IP BIOLOGY Paper 1 Multiple Choice 45 minutes Friday 11 October 2019 0845 – 0930 Additional materials: OAS READ THESE INSTRUCTIONS FIRST Do not open this booklet until you are told to do so. Write your name, register number and class at the top of this page and on the OAS in the spaces 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 pencil on the separate OAS provided. Read the instructions on the OAS very carefully. 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. Setters: OC, TZZ This document consists of 20 printed pages. NANYANG GIRLS’ HIGH SCHOOL [Turn over

2019 End-of-Year Examination Secondary Three IP 2 Nanyang Girls’ High School IP Biology 1 The micrographs show the view of plant cells before and after adjustments are made using a microscope. before adjustment after adjustment [adapted from https://www.amazon.com/Cellular-Organelle-Nucleus-Plant-Cell/dp/B019NSPR4I] Which row shows the actions taken to obtain the image on the right (after adjustment)? objective lens changed from image focused with A 10X to 40X coarse adjustment knob B 40X to 10X coarse adjustment knob C 10X to 40X fine adjustment knob D 40X to 10X fine adjustment knob 2 Vibrio cholerae is an organism that can cause the disease cholera. The symptoms of this disease are diarrhoea and vomiting within several hours to 3 days after ingestion. The characteristics of Vibrio cholerae are listed below: 1 It makes ATP by aerobic respiration. 2 It is a comma-shaped bacterium. 3 It has a flagellum. 4 It is capable of fermentation when there is no oxygen present. 5 It has a circular chromosome suspended in cytoplasm. Is Vibrio cholerae a prokaryote or eukaryote, and which statements support your deduction? type of cell statements supporting deduction A eukaryote 1 and 3 B eukaryote 2 and 4 C prokaryote 2 and 5 D prokaryote 3 and 4

2019 End-of-Year Examination Secondary Three IP 3 Nanyang Girls’ High School IP Biology [Turn over 3 The chemical structure of a nutrient is shown below. What happens to this molecule when it is found in excess in our bodies? A It is broken down by protease into urea and glucose. B It is converted to proteins and stored in the muscles. C It is deaminated and then removed by the kidneys. D It is metabolised for energy. 4 A student carried out a series of food tests to identify the compounds in each of the three test tubes. The table shows the results of the student’s tests. tube Benedict’s test biuret test iodine in potassium iodide alcohol-emulsion test X brick red violet brown white emulsion Y green blue blue-black clear Z blue violet blue-black clear Which statement is consistent with the results? A Tube X contains sucrose and peanuts. B Tube Y contains glucose and starch. C Tube Y contains peanuts and starch. D Tube Z contains egg white and glucose.

2019 End-of-Year Examination Secondary Three IP 4 Nanyang Girls’ High School IP Biology 5 The diagram shows part of the cell membrane. [Adapted from https://study.com/academy/lesson/lipid-bilayer-definition-structure-function.html] Which structures when mixed with protease would produce amino acids only? A 1 and 2 only B 3 and 4 only C 1, 3 and 4 only D 1, 2 and 4 only 6 DNA was extracted from a fruit fly and the cheek cells of a human. In which way did the DNA differ? A ratio of cytosine to guanine B sequence of nucleotides C type of nucleotides D type of pentose sugars 1 2 3 4

2019 End-of-Year Examination Secondary Three IP 5 Nanyang Girls’ High School IP Biology [Turn over 7 The diagram below shows the liver and its associated blood vessels. What are blood vessels 1, 2 and 3? hepatic artery hepatic vein hepatic portal vein A 1 2 3 B 1 3 2 C 2 1 3 D 3 1 2 aorta vena cava part of small intestine liver 1 2 3

2019 End-of-Year Examination Secondary Three IP 6 Nanyang Girls’ High School IP Biology 8 The diagram shows a part of the human alimentary canal. What are the possible consequences of shortening organ S in an individual? 1 Absorption of mineral salts is reduced. 2 Absorption of water is reduced. 3 Digestion of cellulose is reduced. 4 Peristalsis slows down. A 1 and 2 only B 1 and 3 only C 2 and 4 only D 1, 3 and 4 only 9 Which section of the diagram represents the effects of excessive alcohol consumption? liver cirrhosis reduced reaction time addiction A B C D S

2019 End-of-Year Examination Secondary Three IP 7 Nanyang Girls’ High School IP Biology [Turn over 10 The graphs below show the changes in the blood glucose concentration of two individuals X and Y after a carbohydrate-rich meal taken at t = 0 h. One of the individuals has diabetes mellitus. Which of the following cannot be deduced from the graph? A Individual X has a higher respiration rate than individual Y. B Individual X produces less insulin than individual Y. C Individual X is likely to be the person who has diabetes mellitus. D It takes time for digestion and absorption of carbohydrates to be completed. blood glucose concentration/ mg/ 100 cm 3 blood time/ h individual X individual Y

2019 End-of-Year Examination Secondary Three IP 8 Nanyang Girls’ High School IP Biology 11 The diagram shows the apparatus used in an investigation to measure the rate of photosynthesis. The results of the experiment are shown in the table below. mass of sodium bicarbonate added/ g volume of gas collected in one minute/ cm3 min-1 0.5 2.0 1.0 2.4 1.5 3.2 2.0 4.2 2.5 4.8 3.0 5.0 What can be concluded from the experiment? 1 Light intensity is a limiting factor. 2 Temperature affects the volume of gas collected. 3 The variable investigated was carbon dioxide concentration. 4 To increase rate of photosynthesis, mass of sodium bicarbonate added can be further increased. A 1 and 4 only B 2 and 3 only C 3 and 4 only D all of the above beaker glass funnel hydrilla bright light water gas measuring cylinder

2019 End-of-Year Examination Secondary Three IP 9 Nanyang Girls’ High School IP Biology [Turn over 12 A student carried out experiments to determine how different variables affect rate of photosynthesis. Her results are represented in the graphs. What are the limiting factors at X and Y? X Y A carbon dioxide concentration carbon dioxide concentration B carbon dioxide concentration light intensity C light intensity carbon dioxide concentration D light intensity temperature Rate of photosynthesis carbon dioxide concentration light intensity of 15 units temperature of 20°C light intensity of 30 units temperature of 20°C Y X

2019 End-of-Year Examination Secondary Three IP 10 Nanyang Girls’ High School IP Biology 13 The graph below shows the rate of photosynthesis plotted against an unknown factor. What was the factor that was investigated in the experiment? A carbon dioxide concentration B light intensity C pH D temperature 14 The diagram below shows some cells obtained from a part of the respiratory system. Where can these cells be taken from? trachea bronchus bronchiole alveolus A ü ü ü û B ü û ü ü C ü ü û û D û û ü ü rate of photosynthesis