6. Yoghurt is formed by the action of bacteria on...?
the yeast in the milk
the starch in the animal
the lactose in the milk
the sugars in the cheese
7. When microorganisms are grown on a large scale, certain condition are needed so that the microorganisms can grow effectively and produce their useful product. Which of the following is NOT necessary for the large-scale production of microorganisms...?
A constant air supply, to provide oxygen to the microbes
Flavourings and preservatives, for taste and aesthetic appeal
A motorised stirrer to keep the microbes moving and to maintain an even temperature
Sterile Conditions
8. Microorganisms need to be kept at the right temperature in order for them to grow effectively. But why is it necessary for typical fermenters to having cooling jackets?
Cooling jackets help increase the efficiency of fermentation
Microorganisms work best in very cold conditions
The microorganisms produce heat as they respire. Without the cooling jacket, the fermenter would get too hot
The carbon dioxide released from the microorganisms creates a lot of heat
9. What is the main component of Biogas?
Carbon Dioxide
Methane
Hydrogen
Oxygen
10. Recently, a completely new food, based on fungi, has been developed. It is produced using the fungus FUSARIUM. But what is this food called?
Mycoprotein
Fusarin
Quorn
Microprotein
11. Which of the following is something that microorganisms do NOT need to grow?