uses of microorganisms

Question 1

what are the uses of microorganisms?

Answer 1

• moulds are added to blue
  Cheese
• Yeast are used to make bread rise
• Bacteria are used to make yoghurt

Question 2

How do moulds help cheese?

Answer 2

The mould gives the cheese a creamy texture and a distinctive sharp, tangy taste

Question 3

how does yeast make bread rise ?

Answer 3

• yeast ferments the sugar to produce carbon dioxide – this is the gas that causes the bread to rise

Question 4

how does bacteria help to make yoghurt?

Answer 4

• non-pathogenic bacteria is added to milk that has been pasteurised
• Bacteria ferment lactose and produces lactic acid
• The lactic acid acts on the proteins in the milk to thicken it and give it a sour or tangy taste
• probiotics are a supplement in some yoghurt which are said to give health benefit