Microbiology
Q1.
The diagram shows a method used to grow pure cultures of a bacterium.
 
(a)     Name apparatus A and apparatus B.
Apparatus A _______________________________
Apparatus B _______________________________
(2)
(b)     (i)      Why should apparatus A and apparatus B be sterilised before they are used?
______________________________________________________________
______________________________________________________________
(1)
(ii)     How should apparatus A be sterilised?
Tick () one box.
 
Using enzymes		
Using a flame		
In an incubator		
(1)
(iii)    Adhesive tape is used to secure the lid on apparatus B.
Give one reason why the lid of apparatus B should be securely taped in place.
______________________________________________________________
______________________________________________________________
(1)
(c)     What is the maximum temperature that should be used in schools to grow the bacteria in apparatus B?
Draw a ring around the correct answer.
 
10 °C	25 °C	50 °C	
(1)
(Total 6 marks)