MEDIUM
Lower Secondary Stage 7
IMPORTANT
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Which do you think is smaller, bacteria or yeast? Give your reasoning.

Important Questions on Microorganisms and Disease

MEDIUM
Lower Secondary Stage 7
IMPORTANT
Cambridge Lower Secondary Science Stage 7 : Student's Book>Chapter 2 - Microorganisms and Disease>Exercise 6>Q 10
Which do you think are smaller, bacteria or viruses? Give your reasoning.
HARD
Lower Secondary Stage 7
IMPORTANT
Cambridge Lower Secondary Science Stage 7 : Student's Book>Chapter 2 - Microorganisms and Disease>Exercise 6>Q 11
Why are viruses are not like all other organisms?
MEDIUM
Lower Secondary Stage 7
IMPORTANT
Cambridge Lower Secondary Science Stage 7 : Student's Book>Chapter 2 - Microorganisms and Disease>Exercise 6>Q 13

The images given are not taken with a light microscope. Find out what kind of microscope has been used.

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MEDIUM
Lower Secondary Stage 7
IMPORTANT
Cambridge Lower Secondary Science Stage 7 : Student's Book>Chapter 2 - Microorganisms and Disease>Exercise 6>Q 13
Why was an electron microscope been used and not a light microscope?
MEDIUM
Lower Secondary Stage 7
IMPORTANT
Cambridge Lower Secondary Science Stage 7 : Student's Book>Chapter 2 - Microorganisms and Disease>Exercise 7>Q 1

Use the evidence in figure 2.6 to say which of the soups has gone bad.

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MEDIUM
Lower Secondary Stage 7
IMPORTANT
Cambridge Lower Secondary Science Stage 7 : Student's Book>Chapter 2 - Microorganisms and Disease>Exercise 7>Q 2
Describe two nineteenth-century ideas to explain why soup goes bad.
EASY
Lower Secondary Stage 7
IMPORTANT
Cambridge Lower Secondary Science Stage 7 : Student's Book>Chapter 2 - Microorganisms and Disease>Exercise 8>Q 3
Explain why shall we paint the classroom blue? Is not a scientific question.
HARD
Lower Secondary Stage 7
IMPORTANT
Cambridge Lower Secondary Science Stage 7 : Student's Book>Chapter 2 - Microorganisms and Disease>Exercise 8>Q 4
Describe Pasteur's evidence.