EASY
Lower Secondary Stage 7
IMPORTANT
Earn 100

Aiko leaves some lychees in a bowl for two weeks.

After 10 days she observes patches of grey mould on the surface of the lychees. The mould grew from spores that landed on the lychees.

Suggest where these spore came from and how they got on the lychees.

Important Questions on Microorganisms and Disease

EASY
Lower Secondary Stage 7
IMPORTANT
Cambridge Lower Secondary Science Stage 7 : Workbook>Chapter 2 - Microorganisms and Disease>Exercise 1>Q 6
Lana is looking at a book with a picture of E. coli bacteria. The bacteria in the image are magnified×10 000. What does this mean?
MEDIUM
Lower Secondary Stage 7
IMPORTANT
Cambridge Lower Secondary Science Stage 7 : Workbook>Chapter 2 - Microorganisms and Disease>Exercise 2>Q 3
Why do fridges and freezers help to prevent food from spoiling?
EASY
Lower Secondary Stage 7
IMPORTANT
Cambridge Lower Secondary Science Stage 7 : Workbook>Chapter 2 - Microorganisms and Disease>Exercise 2>Q 4

Mr Lee leaves some bread, dried figs and pickled gherkins in his cupboard while he goes on holiday.

When he gets back, the bread is mouldy. But the dried figs and pickled gherkins are not mouldy. Explain why.

EASY
Lower Secondary Stage 7
IMPORTANT
Cambridge Lower Secondary Science Stage 7 : Workbook>Chapter 2 - Microorganisms and Disease>Exercise 2>Q 5

There are several stages in the scientific method used by scientists.

Complete the table by writing 1st, 2nd, 3rd or 4th to show the correct order of the stages shown.

Stage of sceintific method Order
Experiment  
Question to be answered   
Results  
Prediction  

 

EASY
Lower Secondary Stage 7
IMPORTANT
Cambridge Lower Secondary Science Stage 7 : Workbook>Chapter 2 - Microorganisms and Disease>Exercise 2>Q 6
Pasteurised milk eventually spoils even if the container is not opened. Explain why?
EASY
Lower Secondary Stage 7
IMPORTANT
Cambridge Lower Secondary Science Stage 7 : Workbook>Chapter 2 - Microorganisms and Disease>Exercise 3>Q 1
What is meant by infectious disease?
EASY
Lower Secondary Stage 7
IMPORTANT
Cambridge Lower Secondary Science Stage 7 : Workbook>Chapter 2 - Microorganisms and Disease>Exercise 3>Q 2
Which of the following are symptoms of food poisoning? Tick two boxes.
EASY
Lower Secondary Stage 7
IMPORTANT
Cambridge Lower Secondary Science Stage 7 : Workbook>Chapter 2 - Microorganisms and Disease>Exercise 3>Q 4
Give an example of a disease spread by animals?