BIOLOGI SOALAN KERTAS 3

SULIT 4551/3

4551/3BiologiKertas 3Oktober20061½ jam

SEKTOR SEKOLAH BERASRAMA PENUH

BAHAGIAN SEKOLAH

KEMENTERIAN PELAJARAN MALAYSIA

PEPERIKSAAN AKHIR TAHUNTINGKATAN 4 2006

BIOLOGY

Kertas 3Satu jam tiga puluh minit

JANGAN BUKA KERTAS SOALAN INI SEHINGGA DIBERITAHU

Untuk Kegunaan PemeriksaSOALAN Markah

penuhMarkah

diperolehi

1 33

2Respons

15

Laporan 2

JUMLAH

Kertas soalan ini mengandungi 13 halaman bercetak

4551/3 @ 2006 Hak Cipta SBP [Lihat sebelahSULIT

1. Kertas soalan ini adalah dalam Bahasa

Inggeris.

2. Calon dikehendaki membaca maklumat

di halaman 2.

SULIT 2 4551/3

INFORMATION FOR CANDIDATES

1. This question paper consists of two questions. Answer all the questions.

2 Write your answers for Question 1 in the spaces provided in the question paper

3 Write your answers for Question 2 on the lined pages at the end of the question paper

in detail. You may use equations, diagrams, tables, graph and other suitable methods

to explain your answer.

4 Show your working, it may help you to get marks

5 If you wish to cancel any answer, neatly cross out the answer.

6 The diagrams in the questions are not drawn to scale unless stated.

7 Marks allocated for each question or part question are shown in brackets

8 The time suggested to complete Question 1 is 45 minutes and Question 2 is

45 minutes

9 You may use a non-programmable scientific calculator

10 Hand in this question paper at the end of the examination.

Marks awarded

Score Description

3 Excellent: The best response

2 Satisfactory: an average response

1 Week: An inaccurate response

0 No response or wrong response

4551/3 @ 2006 Hak Cipta SBP [Lihat sebelahSULIT

SULIT 4551/3

Answer all questions.

Question 1

A group of students carried out an experiment to study the effect of light intensity on the rate of photosynthesisDiagram 1(a)(i) shows the set up of the experiment.Diagram 1(a)(ii) shows the time taken for the experimentDiagram 1(b) shows the result of the experiment done at the distance of 20 cm,40 cm,60 cm and 80 cm from the bulb (menthol)

DIAGRAM 1(a)(i): SET UP OF THE EXPERIMENT

d

Diagram 1 (a)(ii)

4551/3 @ 2006 Hak Cipta SBP [Lihat sebelah SULIT

3

Time taken for the experiment/min

……..

Boiling Tube

Gas bubbles

Aquatic plants

Water bath (370C)

Sodium hydrogen carbonate solution

beaker

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40 cm

Diagram 1(b) : Result of the experiment

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1 For

Examiner’s

Use

a) (i) Based on diagram 1(b),state two observations that can be made from the

experiment.

Observation 1

…………….……………………………………………………………………………..

……………………………………………………………………………………………

Observation 2

……………………………………………………………………………………………..

…………………………………………………………………………………………

[3 marks]

1(a)(i)

(ii) State the inference for each observation made in (a) (i).

Inference for observation 1

……………..……………………………………………….........................................

……………………………………………………………………………………………

Inference for observation 2

……………..………………………………………………...........................................

……………………………………………………………………………………………

[3 marks]

1 (a) (ii)

(b) (i)

(ii)

Record the time taken for the experiment in the space provided in diagram

1(a)(ii).

Record the number of gas bubbles released in the space provided in

diagram1(b) at the distance of 20 cm,40 cm,60 cm and 80 cm in the time given.

[3 marks]

(b)(i)(ii)


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(c) (i)

(ii)

Complete Table 1 based on the experiment that was carried out..

Variables Particulars to be implemented

Manipulated variable

…………………………………

…………………………………

How to alter the manipulated variable

…………………………………………………..

…………………………………………………..

Responding variable

…………………………………

…………………………………

How to determine the responding variable

…………………………………………………..

…………………………………………………..

Controlled variable

…………………………………..

…………………………………

How to maintain the controlled variable

…………………………………………………..

…………………………………………………..

[3 marks]

1 (c) (i)(ii)

(d) (i) State the hypothesis for this experiment.

……….……………………………………………………………………………………

……………….…………………………………………………………………………… [3 marks]

1(d)(i)

(ii) Record the result of the experiment in the table below. Plot a graph of rate of photosynthesis against distance.

Distance

(cm)

Number of gas bubbles released

Rate of photosynthesis

(Number of bubbles min -1)

20

40

60

80

[3 marks]

1 (d)(ii)


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(d) (iii) Explain the relationship between the rate of photosynthesis and the light intensity

……………………………………………………………………………………………

……………………………………………………………………………………………

……………………………………………………………………………………………

[3 marks]

1(d)(iii)


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SULIT 4551/3

(e) The experiment is repeated, but by increasing the temperature of the water bath to 600C . Predict the effect of increasing the water temperature to the rate of photosynthesis.

……………………………….……………………………………………………………

……………………………………………………………………………………………

……………………………………………………………………………………………

[3 marks]

1 (e)

(f) State the relationship between the increase of temperature and the rate of photosynthesis.

……………………………….……………………………………………………………

……………………………………………………………………………………………

……………………………………………………………………………………………

[3 marks]

1 (f)

(g) Based on the experiment, define photosynthesis operationally.

……………………………….……………………………………………………………

……………………………….……………………………………………………………

……………………………………………………………………………………………

[3 marks]

1 (g)

(h) Another group of students had carried out the experiment to study the effect ofcarbon dioxide concentration on the rate of photosynthesis but using thefollowing apparatus and materials.

Hydrilla sp, sodium hydrogen carbonate powder, distilled water, light bulb.

Categorised the apparatus and materials in their experiment. [3 marks]

1 (h)


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2

Based on the above information, design a laboratory experiment to investigate the

effect of pH, on the activity of yeast.

Your experimental planning need to include the following aspects:

Statement of identified problem

Objective of study

Variables

Statement of hypothesis

List of materials and apparatus

Technique used

Experimental procedures

Presentation of data

[17 marks]

END OF QUESTION PAPER


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Microorganisms are not always active. The growth and activities of microorganisms are influenced by various abiotic factors such as temperature, pH, light intensity and the presence or absence of nutrients.

SULIT 4551/3

SPACE FOR ANSWERS

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BIOLOGI SOALAN KERTAS 3