Suggested Answer for Biology
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 C |2 D |3 B |
|4 B |5 A | |
Short questions (p. 1-15) 6. 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.
(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 C |2 D |3 B |
|4 B |5 A | |
Short questions (p. 1-15) 6. 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.