HAftA IZZAH Biotogy PaperJ Exceil Score

7.3 MASTERING GROUP 3 SKILLS

SAMPLE ANSWERS

GROUP 3

scrENcE PROCESS SKTLLS (SPS)

SPS 6 - Communicating

SPS 7 - Using Space Time Relatio;nship

SPS 8 - Interpretation

SPS 5 - Predicting

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Reasoning base on relatedbasic concept

Guide 4- SPS 9 - Defininq bv Ooeration

The abirity of students to describe the given term based on what can be seen inthe experiment. The answer must consists of both Manipurated Variable andResponding Variable.

ft fie" , Students shoutd be abte to

i. ldentify the define task word in the question: conclude, deduce, defineor statdthe operatonat definition .

ii" Write down the answer starting with the given lerm; ,Osmosis is....,iii. Continue expanding the term with core basic conceptiv. Describe the term based on the observation + inferene es ( refer to thd

expeiment's result and ansrvers of obeervation + inferences,) .

Examole :

Observation(Refer Tahlel2) why the potato strip

ln distilled water, the final length of thepotato strip after being immersed is6.0 cm.

The final length of potato skips increaseDecause the water molecules from thedistilled water diffuse into the cell sap of thepotato strip by osmosis.

ln 0.5 M of sucrose solution, the finallength of {he potato strip after beingimmersed is 4.2 cm.

The final length of potato strips decreaeebecause the water molecules diffuse outlol ]nq celt sap of the potato strip to rhe0.5 M of sucrose solution by osmosis.

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2. Erata 2 - pAGE 65step 3 - Reminder 1 - Resoonding Variable (RV)

3. Erata 3 - pAGE 94Sample Answer, Table 2E - Arrow

Sample answer:

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::fr*T$,rre I ilrj"rl-""''I l-3-Tscor€l fi*T3cor.rrlrirlt l_rli lTh-

fToEiTSco,€lrrTf el4. Erata 4 - pAGE 99 LiSample Answ€r, -Arrow

sampre answer I Prediction - lm I

The rate of reaction woulo T f]iS-!:l *:.n 1.6 yo mi\n{ // Any rationat fi xvatue. When-

the concentrat;on of albumen increase, tne nunOir-'of itJ thei/o;;,i;;'Liiin, ii#r"n enzvmc anr.t <tthctra+o,3y::rylur,g"rncrease!.i

Percentage concentration

of albumen srspen"ion @

Time

@*Rate of reaction

@"'"-D/ro\ ----- =-a\ AII TITLES

withcorrect UNITS

'15 10 1.5

\zo.z>r- 12.5 1.6

rabre2s \r"ALL Manipulated

Variable (MV)All Data / Responding Variable (RV)

in lhe correct columns

re a so n ng-u su a I I y rel ated w ith i n te rp ret ati o n ski I t

llAFfA IZZAH Biology Paper3 Excell Score

QUESTION2:

CHAPTER t: CHEMIGAL GOMPOSITION OF THE GELL

to construct a complete record the results with the

Sample answer:

Space fime Rela

Able to draw a graph with the following aspects

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P1 Able to stale all the columns titles withcorest units respectively

1 mark

P2 Able to state all the Manipulated Variable (MV) 1 mark

P3 Ableto writedown all the data in correct columns 'l mark

Percentage

concentration of

starch solution (%)

Time (s) Rate of enzyme reaction

(%/s)

0.50 12 0.04

1.00 16 0.06

1.50 18 0.08

2.00 25 0.08

P1 AXES - Labelle both axes with conect titles and units- Use uniform scales for both axes A-1mark

P2 POINTS- Ploi all points conectly P- 1 mark

p5 Snnpg - Al point are connected smoothly,started fromthe 1"1 point ( not necessary starting from theorigin if there is no data given) to the last point

by free hand and not using a ruler.- Must touching all plotted points.

S-1mark

HAtfA IZZAH Blology PrperS Excell Scor€

SPSS-In on

i3r

Students able to state the relationship between the manipulated and responding variablecorrectly based on the communicating data.

Sample answer:

1. \Men the concentration of starch solution increases / decreases, the rate of enzymeamylase reaction increases / decreases,

2. because the number of molecules of substrate increases I decreases causes more /less collisions between molecules of amylase and the molecules of starch solution Isubslrate.

SPS 5 - Predictino3 Students able to :

Predict by giving one fix rational value or a possible general value besed on the data olexperiment and give explanation of the prediction base on a basic concept.

Sample answer

K1 - The starch solution will not be hydrolysed /l There is no reaction taken placeK2 - The lodine test always tum blue black onto the starch solution.K3 - because the enzyme has been denatured (due to the 60 oC

)

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ilAfFA lZZtfi Biatogy psper3 Erce[Score

QuEsrorvS

CHAPTER 7 : Carry out an activity to show aerobic respiration.

d (i)Able to construct a complete the results with the

Sample answer:

Temperature, "C lncrease in height ofcoloured liquid, cm

Rate of respiration,cm min'l

20 2.6 0.2630 3.9 0.3940 4.0 0.4050 2.5 0.25

^urs re ilarc rf rs srrafiges rn-me.rncrease rn nergnt ot the coloured liquid with ume and giwthe fact and an explanation for the changes conectly based on tne dbwing ;ieria:

c1: observation - The changes in the increase in height of the coloured liquid with timeC2: Fact - Respiration has stoppedC3: Explanalion - Depletion of glucose / Death of yeast

Sample answer:

As time goes by, the height of the coloured liquid will continue to increase above 2.6cm arteventually stop. The respiration has stopped because the glucose has been J"fet"o I tn.yeast has died

$PS7-Usingspace Relationio state the changes in the increase in hefuttt of the

Able to state the retationship Oetw@liquid and the rate of respiration correcfly based on the following criteria

c1: State the increase in temperature until/above the optimum temperatureC2: Statg the amount of increase in heiqht of coloured iiouid

8-coloured

2-

P1 Able to state alt the cotumns tiiiesliln--conect units respectively

1 mark

P2 Able to state all the Manipultted-Wable (f\/lv)- 1 mark

p5 Abte to write dolyn all the data in correct columns 1 mark

HAfFA IZZAH Biotogy paper J Excelt Score

QUESI/ON 4

CHAPTER'10 : study the effect of air movement on the rate of transpiration.

C3: State the rate of respira

Sample answer:

when the temperature increases until the optimum temperature, the increase in height ofcolour liquid is higher because the rate of respiration is higher.

J Able to predict the observifioexplain the prediction based on the following criteria

Cl : Observation - The increase in height of the coloured liquidC2: Value - less than 2.5cmC3: Explanation - The rate of respiration is lower

lEnzyme denature

Sample answer:

The height of the coloured liquid will increase but less than 2.scm because the rate ofrespiration is lower / denaturation of respiratory enzyme

Score I qample answersSPS 6 - Comnunicatng

3 d (i)Able to construct a complete Table anC

P1 Able to state all the columns,tiflas withconect units respectivelv

1 mark

P2 Able to state att tfre MinputateA Variabte ltrrt\| 1 mark

J Apte ro wnte down au flle data in conect columns 1 mark

Sample answer:

Speed of air movemenVarbitarv 1 2 aDistance of the air bubble movedG5 minutes /cm

2.5 5.6 10.3

Rate of transpiration / cm min-r 0.5 1.12 2.08

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llAFfA lzZAU Biotosr paper 3 [xceil score

SPS7-Using$paceAble to draw a graph with the following aspects :

P1 AXES - Labelle both axes with correct titles and units- Use uniform scales for both axes A- 1 mark

P2 POINTS- Plot all ooints correcl P- 1 markP3 SHAPE - All point are connected smoothly,started from

the 1" point ( not necessary starting from theorigin if there is no data given) to the last pointbyfree hand and not using a ruler.

- Must touching all plotted points.

S-1mark

SPS 8 - Interpretation

able to state the relationship between thecorrectly based on the communicating data.

Sample answer:

P1 When the air speed increases, the rate of transpiration increasesP2 because the air movement will remove the water vapour from the surface of the

leaves of balsam shoot.

Able to predicl observation and the ng rate transpiration. Explain the outcome of theexperiment conectly with the following aspects.

P1 - Able to predict observationP2 - Able to state the change in rate of transpirationP3 - Explanation

Sample answer:

Distance the air bubble moved shorter and the rate of transpiration is lower, less than 0.50 cm,

min-l because the air movement decreases when fun is not switched on during theexperiment.

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HAFFA IZZAH Biotogy paper 3 Excel Srore

* euEsToN o (spr 2oos)

CHAPTER 6 : Determine the energy value in food sample

Score I Sample ang\ivensSPS 6 - Communicatiig

3 l d (i)Able to cons

P1 Able to state all the columns'tifles withcorrect u nits respectivelv

1 mark

P2 Able to state atl the ManipulateO V-riaOte lltVy 1 mark

P3 Able to write down all the data in correct colunrns 1 mark

Sample answer:

Food sample Temperature increasing(oC)

Energy value(Jq-1 )

White bread 5 84.0

Peanut 11 184.8

SPS 7 - Using Space Time Retiiionshtp3 f N,ofes; SPJM guesfion 2005 Aoii' space-time relationship I

SPS 8 - Interpretatioi3 Able to state that relationship between the

sample correc'tly and accurately.

C1: Food sample (white bread / peanut)C2: Food sample ( Carbohidrat / protein/ilipid / faQC3: Realeased of energy ( High / low)

Sample answer:

white bread is an example of.the carbohydrate food class which has low energy value / alitde and peanut is an example of the lipiat protein and has high eneW. '

3based on criteria:C1 : State observation on increase in temperature

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HAFFA TZZAH Biolcgr paper 3 Erclt Score

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CHAPTER t5 : study the effect of colour camouflage in the survival of aspecies through analogy

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d (i)Able to construct a comRlete

Pl Able to state all the cotumni tifles wii6--cgnect units respectivelv

1 mark

P2 Able to state afi the Manipulated tariAbte (tUV) 1 mark

rJ ADte to write down all the data in conect columns 1 mark

Colour of buttonColour of cloth No. of buttons on the tile

Red Black White Yellow GreenWhlte 1 o 0 2 1

Black 1 0 7 2 0Multicolsured patterned cloth 1 1 4 3 1

sPS 8 - Interpretation3 Students able to state the relationship Uetween

correctly based on the communicating data.

Sample answer:

The more obvious the difference in colour between the cloth and the button, the more thenumber of that button will be taken.

SPSs-Fffia Students able to :

Predict by giving one fix rational value or a possible general value based on the data ofexperiment and give explanation of the prediction base on a basic concept.

Sample answer:

More black buttons will be takenBecause the difference in cnlour between the yellow cloth and the button is very obvious.

score Sample angwensSPE 6 - Communicating

3 d (i)Able to construct a complete Table and record@

Pl Able to state all the columns'ti{es withcq!"rect unils respec{ively

't mark

P2 Able to state all the Manipulated Variable (MV) 1 mark

P3 Able to write down all the data in conec{ columns 1 mark

Sample answer:

WaterSample

Time(Min)

Time Difference betweenthe final time reading and

the initial time reading(min)

B.O.D.[1ftime]

K 12.15 pm 15 0.07

L 12.35 pm 35 0.03M 1.52 om 1't2 0.009

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llAfFA EUAu Biology paper 3 Exreil Sccre

SPST-Usingspace RelationshipAble to explain ttre ielationstrip^ur' rv e ptarlr Ine relarlonsnlp between the time taken each Campte of witer wittr ttreB.O,D. value for the methylene blue solution to decolourise.

P1 - time taken to decolourise the methylene blue solutionP2 - sample waterP3 - value of B.O.D.

Sample answer:

The longer the time taken to decolourise the methylene brue sorution, the rower the B.o.Dvalue of water samples.l/The shorter the time taken to decorourise the methyrene brue sorution, the higher B.o.D.value of water samnle

SPs 8 - tnteriieniii

SPS 5 - Preto predict conectty iiA exptain ne based on the foltowing item:

Students "Ut"

tocorrectly based on the communicating data.

Able to explain the relationship between the dissolved oxygen in water sample used with thetime taken for the methyrene brue sorution to decorourise c-onectty - - --"'-'

Sample answer:

when the present of dissolved oxygen in the water sample is low/high, the time taken for themethylene blue solution to decolourise is shorter/longer.

C1 - Water sample

9?- t!f, taken (in units) to decolourise the methytene blue solutionCJ - fhe concentratian of dissolved oxygen

Sample answer:

The time taken to decolourise th-e_methyrene brue sorution-in.the water sampre from nearbypoultry is 75 minutes because of the hijh concentration of dissorverr nwnon

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HAFIA IZZAH Biotogy paper 3 Exc€il Score

7.4 MASTERING GROUP 4 SKILLS

SAMPLE ANSWERS

GROUP 4

scrENcE PROCESS SKTLLS (SPS)

SPS 2 - Classification

44

ILAFFA EZAH Biotogy Pap+r3 Exce[Scorr

tfQUESIiON 1- /SpM 2007) GHAPTER 6- PHOTOSy,VTHESTS

SPS 2- Classifying(c) (i) Students should

Sample answer:

able to list all and apparatus

1. 60 W bulb2. Ruler3. Boiling tube4. paper clip5. Retort stand

Table 42* ALL TWO M/ITERIALS AND FIVE APPAMTUS ARE CORRECT

1. 2 o/o sodium hydrogencarbonate solution

2. Hydrilla sp

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CHAPTER4:Figure 28 (a), 28(b) and 29(c) show the apparatus set-up used in this experiment.

2- Classifying(c) (i) Students

Sample answer:

be able to list all materials anO appaiatus taUeteO in

Table 43- ALL THREE MATERIALS AND SIX APPARATUS ARE CORRECT

Material Apparatus1% of starch solution Water Bath

lodine solution Test tubesSaliva solution Svrinqe,

Dropper.White tile with grooves

Stop watch

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HAFFA IZZAH Btolosr psper 3 Excelt Score

7.a.2 EXERCTSES OF THE SECOND METHOD QF CLASS|F|CATION:

QUESI/ON 3: (sPM 2006)

CI'APTER 4. COMPOSITION OF THE CELL

Scgro Sample en$ilersSPS 2- Classifying

(c) (i) Students should be abte to matCh tthe following variables correclly.

Sample answer :

Variable Aooaratus MaterialManipulated Syringe Albumen

susoensionResponding Stopwatch Albumen

susoensionControlled Thermometer

SvrinoeWater bathPeosin

Table 44

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CHAPTER Il.TRANSPORT lN PLANT

Score I Sample answeGr

sPStrarassr-fytns;3 (c) (i) Students should be able to matctr i

the following variables conecfiy.Sample answer:

Variable Apparatus MaterialManipulated Bulb Power of bulb

Responding Stopwatch Air bubble in the capillary tube

Controlled Beaker Volume of water

Table 45

46

HAFFA IZZAH Bioto5/ paper J Excelt Score

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CHAPTER 7.THE ANAEROBIC RESPIRATION IN YEAST

should be able to match apparatus and used to obtiaindata for the following variables correctly.Sample answer:

Table 46

7.4.3 EXERCISES OF THE THIRD METHOD OF CLASSIFIGATION:

Variable Apparatus MaterialManipulated Di$tilled water Yeast suspension

Responding Thermometer Lime water

Controlled Parafiin oil Boiled glucose solution

f ortttoru:(sPM2oo8)

CHAPTER 8. DYNAMIG ECOSYSIEN'

2- Classifying(c) (i) Students should be able to list Biotic factors & Abiotic faciors.

Sample answer :

1. fish2. water-lily3. snail

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llAFfA IZZfuH Biotogy pap€r J Excefl Score

ouEsfloNaCHAPTER 4 : CHEMICAL COMPOSTTTON OF THE CELL

48. Study the effect of substrate concentration on the rate of enzymereaction

CHAPTER 7 : Carry out an activity to show aerobic respiration.

SPS 2- Classifying(c) (i) Students should be able to match the apparatus and material used to obtain dita forthe following variables correctly.Sample answer :

Variables Apparatus Malerials

Manipulated Syringe Starch solution

Responding Stopwatch Starch solution

Salivary amylase

Controlled Thermometer Water bath

Syringe Salivary amylase

SPS 2- Classifying(c) (i) Students should be able to classify them into manipulated and responding variables.

pH

Light intensity

Concentration of nutrients

Growth

Photosynthesis

Reproduction

48

HAFFA IZZAH Biolo1v PaperJ Erceil Score

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SPS 2- Classifying

) Students should be able to list att rnateriats

Sample answer:

Table 50All two materials and eight apparatus are correct.

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CHAPTER 6 : Determine the energy value in food sample

(c) (i) Students should be abte t,ovalue equivalent.

Sample answer:

food classes based on the energn

CHAPTER 10 l study the effect of air movement on the rate of transpiration.

Materials {M) AoDaratus fA)Vaseline Lamp

Plant shoot Metre ruleStop watch

Capillary tubeRubber tube

KnifeBasin

Relort stand

White bread Chocolatemalze MargarineBoiled potato Peanuts

Rice Palm oil

49

CHAPTER {5 r Study the effect of colour camouflage in the survival of aspecies through analogy

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HA?FA laz,.ll Biotogli psFer 3 Excel Score

50

Score Samole answensSPS 2- Classifying

3 (c) (i) students should be able to classify them into the fooa?asses uaseo on the energyvalue equivalent.

Sample answer:

Environment PreyVariegated leafRed leafGreen leaf

Green caterpillarsGrey caterpillars

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CHAPTER 9 : Sludy the air pollution level from different environments

Score Samole answensSPS 2- Classifying

3 (c) (i) students should be able to to match the appaiaffifor the three variables conectly

Sample answer :

Vartabb Apparatus MatertalManipulated Reagent bottle Samole of waterResponding Watch Methylene blue

solutionSyringe Methylene blue

solulionControlling Measurino cvlinder Sample of water

Svrinoe Methvlene blue

Table 50