Post on 09-Apr-2018
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SCIENCE SPM
MODULE 9
PAPER 1
1. The role of denitrifying bacteria is to changeA. nitrate to proteinB. protein to nitrateC. ammonium to nitrateD. ammonium compound to nitrate compound
2. Health problem which not related to unbalanced diet isA. anorexiaB. malnutritionC. obesityD. arteriosclerosis
3. Which of the following is true about bacteria in root nodule of the legume?A. change nitrogen gas in the atmosphere to nitrateB. change ammonium to nitriteC. change nitrite to nitrateD. change nitrate to nitrite
4. Which of the following illnesses is related to unhealthy eating habit?A. insomniaB. migraineC. arteriosclerosisD. osteoporosis
5. The table below shows the calorific value of three class of food.
Calorific value(kJ/g) Classes of food
P Fats
24.3 Carbohydrate
Q Protein
What is value of P and Q?
P QA. 18.6 38.6B. 36.4 77.2C. 38.6 18.2D. 77.2 36.4
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6. Which of these elements required by plants is a micronutrient?A. BoronB. CalciumC. PotassiumD. Magnesium
7. What is meant by balanced diet?A. the food taken by individual according to his appetiteB. the food that can help and individual to resist diseaseC. the food that contains sufficient proportion of all classes of foodD. the food that provides energy to maintain an individuals physical activities
8. The table shows the calorific values of three types of food.
Food Calorific value/kJ g-1
Bread 10.12
Hard-boiled egg 6.59
Milk 2.68
A pupil takes 20g of bread, 10 g of hard-boiled egg and 100g of milk for hisbreakfast. What is the total energy consumed
A. 0.85kJB. 19.39kJ
C. 193.90kJD. 536.30kJ
9. Which statement describes a plant as a producer?A. the dead plant is decomposedB. the plant is a source of food for the animalsC. the plant released oxygen during photosynthesisD. The plants grow healthier with sufficient nutrient.
10. The excessive intake of saturated fats can harm our health because they are
A. do not dissolve in waterB. are solids at room temperatureC. cause high cholesterolD. act as solvent for certain vitamins
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PAPER 2SECTION A + B
Class of food Example of food Calorific value (kJ)
Carbohydrate 1200
Meat 300
Fat Oil 300
1. Table above shows the daily intake of calorie of a man.
a. Complete the table
b. How much calorie does the man gain in one day
c. i. Name one disease that the man would probably get if he continuouslyadopts the above daily intake of calorie
ii. Explain your answer.
iii. Suggest one way to avoid the disease in (c) (i)
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Group A Group B
Sulphur Iron
Phosphorus Boron
Calcium Zinc
Table 2
2. Table 2 shows the essential minerals for plant growth.a. Name the group A and B in Table 2
b. Give one effect of deficiency on plant growth for minerals
i. Phosphorus
ii. Iron
c. Suggest one way to overcome the effect of deficiency for minerals I (b) (i) and(b) ( ii)
d. Give another example of Group A
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3. Diagram 1 shows the structure of an artery a 40 year old man.
Diagram 1
a. What type of food is taken excessively by the man?
b. State two type of disease that may be suffered by the man if he continues takethe food in ( a )
i.
ii.
c. State two advantages of keeping a good eating habit.
i.
ii.
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4. Figure 2 shows part of the nitrogen cycle.
Figure 2
a. Name substance X in figure 2
b. What are the microorganism involved in process K and L
K:
L:
c. Where do the bacteria involved in process K live
d. What fertilizer can be added into soils to increase nitrogen content in soil?
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5. Figure 3 shows an unhealthy plant
Figure 3
a. State the meaning of the following terms
i. Macronutrient.
ii. Micronutrient
b. The deficiency of nutrient X causes the effects on the plant shown in figure 3.
i. what is nutrient X
ii. state two major function of nutrient X
iii. List two other macro nutrient
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6. Figure 4 shows the calorie requirement for different individuals
Figure 4
a. Based on figure 4 state two factors which effect the calorie requirement ofindividual.
i.
ii.
b.i. Which individual has the highest calorie requirement?
ii. Explain why the individual state in (b) ( i ) needs the highest amount ofenergy.
c. Why does an old man need very little energy?
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7. Figure 5 shows the green leaf of plant exposed to the sunlight during the day.
Figure 5
a. What is the process taking place in the green parts of the leaf?
b. Name the following gases:
i. gas X :
ii. gas Y :
c. Write the word equation for the process shown above
d. What is the function of chlorophyll?
e. What is the function of the sun light in this process?
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SECTION C
You are given four solutions, Knops culture solution, culture solution without nitrogenand culture solution.
a. Suggest one hypothesis to investigate the statement.
b. Explain one experiment to test the hypothesis based on thefollowing criteria.
i. Aim of experimentii. Identify the variables
iii. Apparatus and materialiv. Methodv. Tabulation of data
Mineral element and essential nutrient are needed for healthy growth of
plants and they will maintain the fertility of the soil
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MODULE 9 - ANSWERS
PAPER 1
1. A 2. A 3. A 4. A 5. A 6. A 7. C 8. D 9. B 10. B
PAPER 2SECTION A + B
1.a. rice/protein.b.12600c.diabetes
excessive intake of carbohydrate can cause the increase in blood sugar levelreduce intake of sugar and carbohydrate
2.a. macronutrient/micronutrientb. retard growth/retard root growth .ii) clorosis/yellow leaf
c. use chemical/organic fertilizerd. magnesium/potassium/nitrogen
3.a. fat/animal fatb. stroke/heart attack/c. exercise frequentlyd. to maintain body health/for proper growth and development of the body/to supply theproper amount of nutrient to the body.
4.a. nitrites
b. K: nitrogen fixing bacteria, L : denitrifying bacteriac. in the root nodules of legumes plant.d. ammonium nitrate/ammonium sulphate
5. a.i. mineral which are needed by plant in large amountii. mineral which are needed by plant in small amount
b.i. nitrogenii. to synthesis proteins/to make chlorophylliii. carbon/calcium/magnesium/potassium
6. a. i. physical activity.ii. ageb. i. labourer ii. A lot of energy is needed for a labourer to ferfom physical work.c. an old man has low metabolism rate/less physical activity.
7.a. photosynthesisb. carbon dioxide; oxygenc. carbon dioxide + water sunlight glucose + oxygend. to absorb sunlighte. to break the water molecule
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SECTION C
Hypothesis The growth of plants will be affected when the plants lack nutrientslike nitrogen and potassium
Aim To study the requirement of nitrogen and potassium for plantsgrowth.
Variables Manipulated ; type of solutionResponding ; colour of leaves, size of leavesConstant : size of seedling/type of seedling
Apparatus andmaterial
Test-tubes, cotton wool, black paper, Knop solution, culture solutionwithout nitrogen, culture solution without potassium.
Methods
a. three test-tubes with maize seedling are prepared andlabeled U, V and W .
b. test-tubes are filled as shown in the diagram
c. all the set-up are left for several days
Tabulation of dataTest tube Deficiency
of nutrientThe effects ofdeficiency
U NoneV Nitrogen
W potassium