MEDIUM
Lower Secondary Stage 7
IMPORTANT
Earn 100

What group of organisms do yeast belong to? 

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>End of chapter review>Q 13

Question Image

The image is magnified x 400. What does this mean? 

MEDIUM
Lower Secondary Stage 7
IMPORTANT
Cambridge Lower Secondary Science Stage 7 : Student's Book>Chapter 2 - Microorganisms and Disease>End of chapter review>Q 14

If floods hit an area, sewage can get into the water supply. 

Why will boiling water before drinking it prevent diseases? 

MEDIUM
Lower Secondary Stage 7
IMPORTANT
Cambridge Lower Secondary Science Stage 7 : Student's Book>Chapter 2 - Microorganisms and Disease>End of chapter review>Q 14

If floods hit an area, sewage can get into the water supply.

Give the name of one disease that is spread by dirty water. 

MEDIUM
Lower Secondary Stage 7
IMPORTANT
Cambridge Lower Secondary Science Stage 7 : Student's Book>Chapter 2 - Microorganisms and Disease>End of chapter review>Q 15

A carton of milk is on top of a fridge. Another carton of milk is inside the fridge. 

Predict which milk will spoil first.

MEDIUM
Lower Secondary Stage 7
IMPORTANT
Cambridge Lower Secondary Science Stage 7 : Student's Book>Chapter 2 - Microorganisms and Disease>End of chapter review>Q 15

A carton of milk is on top of a fridge. Another carton of milk is inside the fridge.

Explain your prediction. 

MEDIUM
Lower Secondary Stage 7
IMPORTANT
Cambridge Lower Secondary Science Stage 7 : Student's Book>Chapter 2 - Microorganisms and Disease>End of chapter review>Q 16
Mumps is a disease caused by a virus. It causes parts of your mouth to swell up and it is painful to swallow. Some people receive an injection to stop them getting this disease. What does the injection contain? 
MEDIUM
Lower Secondary Stage 7
IMPORTANT
Cambridge Lower Secondary Science Stage 7 : Student's Book>Chapter 2 - Microorganisms and Disease>End of chapter review>Q 17

A student made six batches of bread dough and left each at a different temperature for 30 minutes. The student then measured the increase in height of each dough. The table shows the results. 

Temperature (°C) Increase in height after 30 minutes (mm)
5 0
10 2
15 9
20 19
25 28
30 35

Explain why the height of the dough increased. 

MEDIUM
Lower Secondary Stage 7
IMPORTANT
Cambridge Lower Secondary Science Stage 7 : Student's Book>Chapter 2 - Microorganisms and Disease>End of chapter review>Q 17

A student made six batches of bread dough and left each at a different temperature for 30 minutes. The student then measured the increase in height of each dough. The table shows the results. 

Temperature (°C) Increase in height after 30 minutes (mm)
5 0
10 2
15 9
20 19
25 28
30 35

Which variable did the student change?