Page 19 - Mahir PBD KSSR 2022 Thn 6 - Science

Science Year 6 Unit 3 Microorganisms
5. A group of students carried out an experiment to observe the factors that affect the growth
of microorganisms. They used slices of mango and put them into five different plastic bags.
Observe the information that was collected by the students and then, answer the questions
given. LS 3.1.4 PL 5

Observation
Plastic
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bag Factor
Beginning of the experiment End of the experiment

Mango changes colour and
A Air Plastic bag is left open
becomes soft

Plastic bag is tied and placed in
B Temperature Mango remains fresh
the refrigerator

50 ml of sugar solution is placed Mango changes colour and
C Nutrient
into the plastic bag becomes soft

50 ml of vinegar is placed into
D Acidity Mango remains fresh
the plastic bag

50 ml of water is placed into the Mango changes colour and
E Water
plastic bag becomes soft

(a) What is the aim of the experiment?

Menyiasat hubungan antara faktor yang mempengaruhi pertumbuhan
mikroorganisma dengan keadaan potongan buah mangga di dalam beg plastik pada

akhir eksperimen.

(b) What observation can be made from this experiment?
Potongan mangga di dalam beg plastik B dan D kekal segar berbanding dengan

beg-beg plastik yang lain.

(c) Why did the condition of the sliced mangoes in plastic bags A, C and E change?
Potongan mangga di dalam beg-beg plastik tersebut berubah kerana dipengaruhi

oleh faktor-faktor yang boleh menggalakkan pertumbuhan mikroorganisma iaitu

udara, nutrien, air dan keasidan yang sesuai.

Teacher’s Signature: Date:

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03 Mahir Science Year 6.indd 29 15/03/2022 11:08 AM