78989063 biology perfect score module form 4 set 4
TRANSCRIPT
Student’s Module PERFECTSCORE FORM 4-MODULE 4 2010
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Question 1
Chapter 3 : Movement of Substances Across Plasma Membrane
Learning outcome :
• Design an experiment to determine the concentration of external solution which is isotonic to
cell sap.
• Make an inference of the concentration of cell sap in plant tissues.
Isotonic solution is referring to a solution which has same concentration with cell sap of a
plant cell.
Design an experiment to determine the concentration of sucrose solution which is isotonic
to the cell sap of potato cell. You must include the following aspects :
• Objective
• Problem statement
• Hypothesis
• Variables
• List of material and apparatus
• Technique used
• Procedure
• Presentation of results
• Conclusion
[17 marks]
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Student’s Module PERFECTSCORE FORM 4-MODULE 4 2010
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Student’s Module PERFECTSCORE FORM 4-MODULE 4 2010
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Question 2
Chapter 4: Chemical Composition of Cell
Learning outcome :
• Design an experiment to study the effect of temperature on the rate of enzyme activity.
SITUATION 1
Housewife A uses warm water to wash her clothes using washing liquid which contains
added enzyme. The cleaning is more effective.
SITUATION 2
Using the same washing liquid as in situation 1, housewife B uses cold water to wash her
clothes. The cleaning is less effective.
Based on both situations, design a laboratory experiment to study the effect of
temperature on the rate of enzyme reaction.
The planning of your experiment must include the following aspects:
• Problem statement
• Objective of investigation
• Hypothesis
• Variables
• List of apparatus and materials
• Technique
• Procedure
• Presentation of data
• Conclusion
[17 marks]
Student’s Module PERFECTSCORE FORM 4-MODULE 4 2010
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Student’s Module PERFECTSCORE FORM 4-MODULE 4 2010
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Question 3
Chapter 6 : Nutrition
Learning Outcome :
• Design an experiment to investigate the energy value of different food sample
Energy is needed to perform physical activities and to sustain vital functions such as
breathing, heartbeat and for maintaining body temperature. The energy required by the
body is generated by the oxidation of molecules obtained from food during cellular
respiration.
Ali’s mother bought 3 types of nuts; peanuts, cashew and almond nuts to make
cookies for his birthday party. She was wondering which nuts can provide Ali and his
friends with the most amount of energy.
Based on the above statement and situation, plan a laboratory experiment to investigate
the energy value of different nuts.
The planning for the experiment must include the following aspects:
• Problem statement
• Aim of experiment
• Hypothesis
• Variables
• List of apparatus and material
• Technique used
• Experimental procedure or method
• Presentation of data
• Conclusion
[17 marks]
Answer:
Student’s Module PERFECTSCORE FORM 4-MODULE 4 2010
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Student’s Module PERFECTSCORE FORM 4-MODULE 4 2010
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Question 4
Chapter 7 : Respiration
Learning outcome :
� Design an experiment to explain the energy production from glucose during the process of
aerobic respiration.
One the characteristic of living organisms is their ability to carry out respiration in the
presence of oxygen to generate energy.
Design a laboratory experiment to study aerobic respiration in living organisms based on
the information given. The planning of your experiment must include the following
aspects:
The planning of the experiment should include the following aspects:
• Statement of identified problem
• Objective of study
• Variables
• Statement of hypothesis
• List of apparatus and materials
• Technique
• Procedure
• Presentation of data
• Conclusion
[17 marks]
Student’s Module PERFECTSCORE FORM 4-MODULE 4 2010
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Answer:
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Student’s Module PERFECTSCORE FORM 4-MODULE 4 2010
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Question 5
Chapter 9 : Endangered Ecosystem
Learning Outcome :
• Design an experient to determine the effect of the distance of the Keropok Factory on the
levels of pollution of the river
Villages P, Q and R are situated along the Semerak River, 5 km, 10 km and 20 km
respectively from Keropok Factory. Lately the villages folk feel not comfortable with the
quality of the environment especially the quality of water.
Based on the above information, design a laboratory experiment to determine the effect
of the distance of the Keropok Factory on the levels of pollution of the river.
The planning of your experiment must include the following expect:
• Problem statement
• Aim of investigation
• Hypothesis
• Variables
• List of apparatus and materials
• Technique used
• Experimental procedure or method
• Presentation of data
• Conclusion
[17 marks]
Student’s Module PERFECTSCORE FORM 4-MODULE 4 2010
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Answer:
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Student’s Module PERFECTSCORE FORM 4-MODULE 4 2010
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Question 6
Chapter 9 : Endangered Ecosystem
Learning outcome :
� State the sources of air pollution in some cities
� Interpret data in the level of air pollution in some cities
� Interpret data on the level of water pollution in some rivers
� Make an inference on the sources of water pollution in some rivers.
� Predict the level of air and water pollution in a particular location within the next ten years
Diagram 6 shows an area where different activities are being carried out. The river flowing
at the area receives the wastes from the town and also from the factories. In conjunction
with their studies of the effects of human activities on the environment, a group of students
carried out an experiment to study the level of water pollution in three stations A, B and C,
along the river.
Plan an investigation which you could personally carry out in the laboratory to determine
the level of pollution in stations A, B and C.
The planning of the experiment should include the following aspects:
• Statement of identified problem
• Objective of study
• Variables
• Statement of hypothesis
• List of apparatus and materials
• Technique
• Procedure
• Presentation of data
• Conclusion
[17 marks]
A
B
C
Student’s Module PERFECTSCORE FORM 4-MODULE 4 2010
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