NYGH 2018-S3EOY-IP Bio P1

Class Register Number Name 南洋女子中学校 NANYANG GIRLS’ HIGH SCHOOL End-of-Year Examination 2018 Secondary Three IP BIOLOGY Paper 1 Multiple Choice 45 minutes Friday 5 October 2018 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. Setter: LZJ This document consists of 19 printed pages and 1 blank page. NANYANG GIRLS’ HIGH SCHOOL [Turn over

2018 End-of-Year Examination Secondary Three 2 Nanyang Girls’ High School IP Biology 1 A 150 million-year-old unicellular fossil was discovered in rocks. Scientists studied the cell structure of several samples under the electron microscope. 1 The nucleus is enclosed by a nuclear envelope. 2 The rough endoplasmic reticulum is continuous with the nuclear envelope. 3 There are oval organelles that are 1 to 2 µm long, with an outer membrane and convoluted inner membrane. 4 There is a cell wall. Which observations are critical in determining that the fossil is an eukaryote? A 1 and 2 only B 1 and 4 only C 1, 2 and 3 only D 2, 3 and 4 only 2 The drawing shows part of an alveolus and a red blood cell in a blood capillary. The magnification of the drawing is x 5000. [adapted from Biology June 2003/1] What is the minimum actual distance that oxygen must diffuse across from air in an alveolus into a red blood cell? A 0.1 µm B 1.0 µm C 0.1 nm D 1.0 nm alveolus red blood cell

2018 End-of-Year Examination Secondary Three 3 Nanyang Girls’ High School IP Biology [Turn over 3 The diagram shows an animal cell. [adapted from Biology November 2012/1] Which rows correctly links the cellular component to its function? cellular component function A 1 medium for reactions B 2 anaerobic respiration C 3 synthesis of fats D 4 absorption of proteins 4 Which row is correct in matching the tissue to the correct organ found in a living organism? organ tissue A brain hepatic cells B leaf mesophyll cells C oesophagus hepatic cells D stem mesophyll cells 1 2 4 3

2018 End-of-Year Examination Secondary Three 4 Nanyang Girls’ High School IP Biology 5 The diagrams show the different cellular components found in the blood of a mammal. Which cellular component is involved in phagocytosis? A C B D [adapted from Science Biology November 2015/1] 6 Initially, a plant cell was placed in solution 1 for 30 minutes. Then, the same plant cell was transferred to solution 2 for another 30 minutes. The diagrams show the appearance of the plant cell after the treatments. solution 1 only solution 1 and solution 2 [adapted from Biology June 2013/1] Which row explains the change in appearance of the plant cell after the 1-hour treatment and shows the relative water potential of solution 1 compared to solution 2? change is caused by water molecules moving relative water potential of solution 1 compared to solution 2 A into the plant cell less negative B into the plant cell more negative C out of the plant cell more negative D out of the plant cell less negative

2018 End-of-Year Examination Secondary Three 5 Nanyang Girls’ High School IP Biology [Turn over 7 The diagram shows three routes, 1, 2 and 3, through which substances can pass across a cell surface membrane. [adapted from Biology November 2014/1] Which correctly shows the routes taken by an amino acid, which is water soluble, and vitamin K, which is fat soluble? amino acid vitamin K A 1 2 B 1 3 C 2 1 D 3 1 8 The diagram shows a fat molecule that has been partially hydrolysed. [adapted from Principles of Anatomy and Physiology, 14th Edition, Tortora et. al.] What are the products of the total hydrolysis of the molecule shown? A a molecule of glycerol and two saturated fatty acid molecules only B a molecule of glycerol and two unsaturated fatty acid molecules only C a molecule of water, a molecule of glycerol and two saturated fatty acid molecules D a molecule of water, a molecule of glycerol and two unsaturated fatty acid molecules 1 2 3

2018 End-of-Year Examination Secondary Three 6 Nanyang Girls’ High School IP Biology 9 Which chemical element is found in every protein? A calcium B iron C nitrogen D zinc 10 What makes digestive enzymes soluble in the intestinal juice? A the hydrogen bonds between the amino acids B the non-polar R-groups of the amino acids C the peptide linkages between the amino acids D the polar R-groups of the amino acids 11 The diagram shows an enzyme, its substrate and an enzyme-substrate complex. [adapted from Biology March 2018/1] Which statement explains how the substrate is able to enter the active site of the enzyme? A An effective collision between the substrate and the enzyme causes a change in the shape of the active site of enzyme. B The shape of the active site of enzyme and the shape of the substrate are complementary. C The substrate within the active site of enzyme forms strong hydrogen bonds with the R-groups of amino acids. D When the enzyme-substrate complex forms, the activation energy of the enzyme and substrate decreases. enzyme substrate enzyme-substrate complex

2018 End-of-Year Examination Secondary Three 7 Nanyang Girls’ High School IP Biology [Turn over 12 Catalase (enzyme) catalyses the hydrolysis of hydrogen peroxide (substrate) into water and oxygen. The graph shows how changing the concentration of hydrogen peroxide affected the rate of oxygen production. Which statement is not correct? A At point R, all of the enzyme active sites are occupied by substrate molecules. B At point R, the rate of reaction is limited by the concentration of the substrate. C At point S, enzyme-substrate complex is formed the fastest per unit time. D At point S, the rate of reaction is limited by the concentration of the enzyme. rate of oxygen production / cm3 min-1 hydrogen peroxide concentration / % R S

2018 End-of-Year Examination Secondary Three 8 Nanyang Girls’ High School IP Biology 13 The diagram shows a transverse section of a small part of the water lily leaf. [adapted from Biology June 2014/2] Suggest which one of the observable physical characteristics helps the water lily leaf to float on the surface of water. A densely packed plant cells B irregularly shaped palisade cells C large intercellular air spaces D thick cuticle on epidermis 14 The graph shows the volume of oxygen released and absorbed by a plant during a 24-hour period. [adapted from Biology June 2003/1] Which statement correctly describes point X? A Both the rates of respiration and photosynthesis are the same. B The rate of respiration is higher than the rate of photosynthesis. C The rate of photosynthesis is higher than the rate of respiration. D There is neither respiration nor photosynthesis. volume of oxygen released / dm3 volume of oxygen absorbed / dm3 0 midday midnight X

2018 End-of-Year Examination Secondary Three 9 Nanyang Girls’ High School IP Biology [Turn over 15 The diagram represents a transverse-section of a leaf. Where are amino acids most likely to be synthesized from glucose molecules?