SECTION C

        Bahagian C

[20 marks ]

[20 markah]

Answer Question  10 and either Question 11 or  Question  12

Jawab soalan 10 dan mana-mana satu soalan 11 atau  soalan 12

10   Study the following statement:

       Kaji pernyataan berikut :

	For optimum growth of microorganism it needs optimum temperature. High temperature will kill microorganism. Bagi  memperoleh pertumbuhan mikroorganisma yang optimum memerlukan suhu yang optimum. Suhu yang tinggi membunuh mikroorganisma.

 

     (a)  Suggest a hypothesis to investigate the above statement                  

           Cadangkan satu hipotesis untuk menyiasat pernyataan di atas          

[1 mark ]

     (b)  Using some nutrient broth, bacteria culture, incubator (37 ^oC), refrigerator (10          ^oC), oven (50 ^oC) and other apparatus, describe an experiment to test your       hypothesis in (a)  based on the following criteria.

           Dengan menggunakan bubur  nutrien, kultur bakteria, inkubator(37 ^oC), peti            sejuk (10 ^oC), ketuhar (50 ^oC) dan radas-radas lain. Huraikan satu eksperimen       untuk menguji hipotesis di (a)  berpandukan kriteria berikut.

            -  Aim of the experiment                                                                             

               Tujuan eksperimen                                                                                                                                                                                          

            - Identification  of variables                                                                                   

               Mengenal pasti pemboleh ubah                                                            

                                                                                                                                                                         

            -  List of apparatus                                                                                      

               Senarai radas                                                                                                                                                                               

            -  Procedure                                                                                                 

                        Prosedur                                                                                                                                                              

            -  Tabulation of data                                                                                               

                Penjadualan data