Page 148 - KOMPILASI ARAHAN TUGASAN PEKA SPM KINTA UTARA 2022

PANITIA SAINS DAERAH KINTA UTARA

K4P1a: Paksi berlabel dan berunit
K4P1b: skala seragam
K4P1c: plot graf
K4P1d: bentuk graf yang sesuai

2. State the inference of this experiment. (K4P2a)
The number of bacterial colonies in pH 7 is the highest because it is the optimum pH for the growth of
bacteria.

3. State the relationship between the pH and the growth of bacteria. (K4P2b)
Bacteria can grow in neutral condition but inhibited in acidic or alkaline conditions.

4. Based on the experiment, state the operational definition for pH7. (K4P2c)
pH 7 is the optimum pH for the growth of bacteria that has the most number of colonies on nutrient
agar.

5. Make a conclusion for the experiment. (K4P3)
The growth of Bacillus sp. Is most rapid at pH 7.

6. Based on your observation to the number of bacterial colonies, explain your answer. (K5P1)
The number of bacterial colonies in the neutral condition (pH7) is the most because it is the optimum
pH/condition for the growth of bacteria.

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