NSSMasteringBiologySuggestedAnswerBookA(eng).docVIP

New Senior Secondary Mastering Biology Book 1A Teaching notes p. PAGE 23/ NUMPAGES 23 ? Oxford University Press 2009 Suggested answers to Exercise and Reading to learn (Note: The overseas examination boards bear no responsibility for the suggested answers contained in this publication. Answers for HKCEE and HKALE questions are not available due to copyright restrictions.) Ch 1 Introducing biology Exercise Multiple-choice questions (p. 1-15) 1 C2 D3 B4 B5 A Short questions (p. 1-15) Organisms can obtain food by nutrition; 0.5m break down food to get energy by respiration; 1m move; 0.5m grow; 0.5m sense the environment and respond to it (irritability); 1m reproduce; 0.5m remove waste from their bodies by excretion. 1m 7 a Asking a question 1m b Proposing a hypothesis 1m c Making a prediction 1m d Doing experiments 1m e Drawing a conclusion 1m f Revising 1m 8 Some foods (e.g. cheese and yoghurt) are made with the help of microorganisms. 1m Vaccines give us protection against certain diseases. 1m (or other correct answers) 9 Pollution / diseases / genetically modified food / cloning (any 2 or other correct answers) 1m x 2 Reading to learn (p. 1-16) 1 Microbes were found in nutrient solutions. 2m 2 Microbes fell into the solutions from the dust particles in the air. 2m 3 Experiment 1 was the control set-up while Experiment 2 was the experimental set-up. 1m The control set-up was aimed at ensuring that the result of the experiment was due only to the presence of microbes. 1m 4 Scientific knowledge is tentative and subject to change. 2m OR Science is affected by the technology and equipment available at the time. 2m Ch 2 The cell as the basic unit of life Exercise Multiple-choice questions (p. 2-30) 1 B2 C3 D4 B5 C6 A7 D8 B9 B10 D11 C12 A13 D Short questions (p. 2-32) 14 (a) Irregular 0.5m (b) cell wall 0.5m (c) regular 0.5m (d) cell wall 0.5m (e) Absent 0.5m (f) photosynthesis 0.5m (g) centre 0.5m (h) centre o